3.10 MANMADE FEATURES--MAJOR CODE 200
It is important to understand the general principles because this information is not provided in the individual coding descriptions. The general principles provide instructions on when to collect a feature, how to interpret the feature on the map, where to collect a feature, and how to apply the attribute code. These general principles are used for all features unless there are specific instructions in the individual coding description.
3.10.1 General Principles
3.10.1.1 Node Attribute Codes
There are no node attribute codes.
3.10.1.2 Area Attribute Codes
Most manmade features that are collected using area attribute codes are indicated on the map only by text (either a proper name or a generic label). As such, the code descriptions generally do not have symbol references. Instead, guidelines on how the features are named or labeled on the map are given. The following guidelines are used for all features on the list of area attribute codes and several features that are always collected as areas but are on the list of general purpose attribute codes, including 200 0424 (Well field), 200 0445 (Fairgrounds), and 200 0446 (Rodeo grounds). These features are always treated as "complexes." Several other features, including 200 0421 (Sewage disposal plant), 200 0422 (Waterworks), and 200 0450 (Fort) are treated as complexes and always collected as areas, even though they are sometimes shown as individual buildings on the map.
What kind of features are treated as complexes?
Complexes are generally groups of associated structures functioning as a unit or areas that have a particular use. The text "Lakewood School" identifies a school contained in an individual structure, and the structure would be collected and attributed as a school (200 0403). However, the text "George Washington University" does not identify an individual structure, but an area that has a particular institutional use that would be collected as school campus (200 0101). An individual racetrack that is labeled "Racetrack" would be collected as a racetrack (200 0214). However, the text "Indianapolis Motor Speedway" identifies more than an individual structure and would be collected as raceway complex (200 0127). It would be prohibitive to determine what actually constitutes George Washington University or to determine the ownership boundaries of the speedway. As such, the text describes land use not land ownership.
Determining the extent of a complex requires judgement. The intent of collecting a complex is to describe an area that includes all of associated structures or all of the area that has the particular use being described. This includes parking lots associated with shopping centers, open areas in a fairgrounds, and roads in a mobile home park.
How to recognize a complex
The text placement and size is the best indication of the extent of the feature. In general, if the area is adequate, the text is placed within the feature boundaries, preferably centered in the middle one-third. The extent of the feature can also be indicated by type size and letter spacing. Therefore, larger areas would have larger type or wider letter spacing, or both.
Understanding this rule can be especially helpful if one edge of the feature is obvious, because the distance from the end of the text to the edge of the feature is likely to be very similar to the distance from the beginning of the text to the other edge of the feature. Also, text for area features is sized so that it does not extend outside the feature. However, these are not hard and fast rules because text must sometimes be moved to accommodate graphic requirements for legibility.
If the feature being labeled is an individual structure, the text is placed to the right (preferred) or the left of the symbol. If the name or label is shown on two lines, the words are generally aligned, either flush left or flush right, with the symbol. Individual structures are generally labeled with 6 or 7 point type and the type is never letter spaced.
Although in most cases the presence of a name or label is the best indication of when a feature should be collected as a complex, there are a few examples of areas where only the individual structures are labeled, but it is clear that a complex exists. For example, sometimes ski areas are indicated only by labeling the ski lifts and by clearings in the woodland tint where the ski slopes are.
Other indicators of the extent of a complex may be the pattern of the woodland tint, the arrangement of buildings and other structures including parking lots, and the pattern of streets.
Complexes are perhaps the least definitive features. Therefore, some generalization is acceptable, if not necessary. For example, a university could have an outlying building which may or may not be included within the complex. In other words, this is a case in which identifying a reasonably representative area is more desirable than investing a great deal of effort to refine details, which may not be more accurate or indisputable.
How do other features within a complex get collected?
A complex generally describes a homogenous unit and is significant for its land use. Most complexes include additional features. However, even though the additional features may be collected as areas, the integrity of the complex itself is not affected. All areas within a complex receive the code for the complex. This includes other features that are collected as areas and areas that are created by linear features that close. For example, a building collected as an area within a school campus will receive the code for school campus (200 0101) as well as building, either 200 0400 or 200 0403 (see below). If a racetrack (200 0214) exists within a fairgrounds (200 0445), the area within the racetrack (the infield) receives the code for fairgrounds.
In the case of built-up area (200 0150), an area could have three codes. If a building is collected as an area and it is within a school complex and within a built-up area, all three codes are applied.
Buildings collected within a complex are coded as general case buildings (200 0400), except for churches and schools. If a building has a cross or a flag, it is necessary to collect a special case building (200 0402 or 200 0403), so the building can be properly symbolized.
Any other structures, such as a drive-in theater screen within a drive-in theater or ski lifts within a ski area, are also collected and coded using the appropriate attribute code.
Any complex that is shown with a reservation boundary symbol is collected as both reservation in the Boundaries category and the appropriate complex in Manmade Features. In general, the feature collected in Boundaries as a reservation describes a parcel of land that has been set aside for a particular purpose. If there is an identifiable use of the land, it is collected in Manmade Features. For example, Fort Detrich Cancer Research Center is collected as a miscellaneous reservation in the Boundaries category and as health care complex in Manmade Features.
Any special conditions for collection are given in the individual code description.
How are these features labeled?
The area code identifiers are generalized and may be shown on the map with various labels or proper names. For example, a school complex may be identified with such terms as university, college, or academy. If a label identifies an area that cannot be reasonably included in one of the types of areas defined, do not collect it. For example, "Holy Rosary Academy" is collected as a school complex, but "Mink Farm" does not conform to standard content and is not collected.
What gets coded?
Area attribute codes are assigned only to the area point, not to the line that outlines the area.
3.10.1.3 Line Attribute Codes
There are no general principles that apply to line attribute codes.
3.10.1.4 Single-Point Attribute Codes
In general, the single-point features either have unique symbols, which may or may not be labeled, or they are shown with the "located object" symbol. Features shown with the located object symbol are generally labeled, and the label is used to determine the correct code. If a feature shown with the located object symbol is not labeled, or the label shown is not associated with any code, then the feature is not collected in the DLG.
The labeling conditions in the individual coding descriptions provide the details for how to interpret those features that are shown with a common symbol, but different labels. For those features that have a unique symbol, there are no labeling conditions.
3.10.1.5 General Purpose Attribute Codes
Several features that are coded using general purpose attribute codes are always treated as "complexes" (see 3.10.1.2 for a complete list).
Any building shown by a minimum size symbol, or a building less than 0.05 inches (100 feet) along the longest axis, is collected as a single-point feature (degenerate line). Any building that is 0.05 inches (100 feet) or more along the longest axis is collected as an area.
Within a built-up area (200 0150), collect only buildings that are at least 400,000 square feet or can be described as an arena, (200 0457), auditorium (200 0419), armory (200 0458), capitol (200 0413), city hall (200 0407), community center (200 0414), courthouse (200 0405), firehouse (200 0417), hospital (200 0408), house of worship (200 0402), library (200 0418), memorial (200 0416), museum (200 0415), post office (200 0406), railroad station, school (200 0403), stadium (200 0456), or town hall (200 0407). Note that railroad station is collected in the Railroads category.
Outside built-up area, collect all buildings according to the codes that follow.
Structures that have not traditionally been collected as buildings, such as snowsheds and covered piers and wharfs, are now collected as building (general case).
A building that is shown with a purple photorevised addition is digitized as two separate areas. The original portion of the structure is identified with the appropriate codes. The purple portion is identified by the same codes and is, in addition, assigned code 200 0000 (photorevised feature).
The extent of mining features, including mine dumps, open pit mines, quarries, strip mines, and pits (unconsolidated material) are indicated by the edge of the excavation. Ignore any water bodies within the excavation. Water bodies are collected in the Hydrography category, using the appropriate codes.
3.10.1.6 Descriptive Attribute Codes
Descriptive attribute codes are only used with other codes. The use of a descriptive attribute code is, in many cases, called for by the equivalent label on the source. For example, a map may show "gravel pits," "sandpits," or "claypits." In each case the identifying code for pit (200 0432) must be used with the code to describe the type of pit; gravel (200 0609), sand (200 0610), or clay (200 0611).
3.10.1.7 Parameter Attribute Codes
There are no general principles that apply to parameter attribute codes.
3.10.1.8 List of Manmade Features Attribute Codes
o Node attribute codes
200 0001 End point of linear manmade feature - Code Deleted
200 0002 Point on linear manmade feature - Code Deleted
o Area attribute codes
000 0000 Outside area
200 0100 Church complex
200 0101 School campus
200 0102 Health care complex
200 0103 Orphanage complex
200 0104 Prison compound
200 0105 Mobile home park
200 0120 Ski area
200 0122 Athletic field
200 0123 Golf course
200 0124 Shopping center
200 0125 Zoo
200 0126 Drive-in theater
200 0127 Raceway complex
200 0128 Playground - Code Deleted
200 0140 Marina
200 0141 Cable area - Code Deleted
200 0150 Built-up area
200 0160 Industrial park - Code Deleted
200 0161 Materials storage area - Code Deleted
200 0162 Refinery or industrial site
200 0163 Tailings
200 0164 Intricate surface area
200 0165 Oil sump or sludge pit
200 0180 Tank farm - Code Deleted
200 0181 Feedlot or stockyard
200 0182 Experimental farm
200 0183 Proving ground
200 0184 Firing range
200 0190 Void areao Line attribute codes
200 0200 Conveyor
200 0201 Boardwalk
200 0202 Wall
200 0203 Sea wall
200 0206 Fence line
200 0207 Flume (nonwater) - Code Deleted
200 0209 Sewerline
200 0211 Coke ovens
200 0212 Recreational slide
200 0213 Screen (drive-in theater)
200 0214 Drag strip, racetrack, or raceway
200 0215 Athletic track - Code Deleted
200 0250 Arbitrary closure line - Code Deleted
200 0299 Processing lineo Single-point attribute codes
200 0300 Grave site - Code Deleted
200 0301 Historical marker
200 0302 Mine tunnel entrance or cave
200 0303 Mine shaft
200 0304 Prospect
200 0305 Tower
200 0306 Burner or stack
200 0307 Well
200 0308 Cliff dwelling
200 0309 Light - Code Deleted
200 0310 Kiln
200 0311 Drill hole
200 0312 Watermill - Code Deleted
200 0313 Anchorage - Code Deleted
200 0314 Guzzler
200 0315 Located object or landmark object - Code Deleted
200 0316 Campsite
200 0317 Wind generatoro General purpose attribute codes
200 0400 Building (general case)
200 0401 Class 2 building - Code Deleted
200 0402 Church
200 0403 School
200 0404 Municipal building - Code Deleted
200 0405 Courthouse
200 0406 Post office
200 0407 City hall or town hall
200 0408 Hospital
200 0409 Prison
200 0410 Town, village, settlement, locality, or unincorporated village - Code Deleted
200 0411 Amphitheater
200 0412 Customs building
200 0413 Capitol
200 0414 Community center
200 0415 Museum
200 0416 Memorial
200 0417 Firehouse
200 0418 Library
200 0419 Auditorium
200 0420 Cemetery
200 0421 Sewage disposal plant
200 0422 Waterworks
200 0423 Oil reservoir - Code Deleted
200 0424 Well field
200 0425 Tank
200 0426 Oil or gas platform
200 0427 Mine dump
200 0428 Open pit mine
200 0429 Quarry
200 0430 Strip mine
200 0431 Landfill - Code Deleted
200 0432 Pit, unconsolidated material
200 0433 Radio or television facility
200 0434 Storage bin - Code Deleted
200 0435 Levee or dike
200 0436 Spoil bank
200 0438 Reclaimed area
200 0445 Fairgrounds
200 0446 Rodeo grounds
200 0447 Corral
200 0448 Boat ramp
200 0449 Campground
200 0450 Fort
200 0451 Swimming pool
200 0452 Archeological site, ruin, or Indian mound
200 0453 Recreation area, public use area
200 0454 Picnic area
200 0455 Port of entry
200 0456 Stadium
200 0457 Arena
200 0458 Armory
200 0459 Orphanage
200 0460 Observatory
200 0461 Grange hall
200 0462 Grain elevator
200 0465 Pile, dolphin, stump, or snag
200 0466 Breakwater, jetty, pier, dock, causeway, or wharf
200 0467 Exposed wreck or wreckage
200 0468 Sunken wreck (masts may be exposed)
200 0469 Drydock - Code Deletedo Descriptive attribute codes
200 0601 Underground - Code Deleted
200 0602 Under construction
200 0603 Abandoned - Code Deleted
200 0604 Water
200 0605 Oil - Code Deleted
200 0606 Gas - Code Deleted
200 0607 Chemical - Code Deleted
200 0608 Covered - Code Deleted
200 0609 Gravel
200 0610 Sand
200 0611 Clay
200 0612 Borrow - Code Deleted
200 0613 Radio - Code Deleted
200 0614 Lookout
200 0615 Unincorporated - Code Deleted
200 0616 No population - Code Deleted
200 0617 Submerged
200 0618 Ruin
200 0619 Caliche - Code Deleted
200 0620 Chert - Code Deleted
200 0621 Cinder - Code Deleted
200 0622 Pumice - Code Deleted
200 0623 Shale - Code Deleted
200 0624 Scoria - Code Deleted
200 0625 Communication
200 0626 Control
200 0627 Cooling
200 0629 Navigationo Parameter attribute codes
200 0000 Photorevised features
202 ---- Width in mils of feature to scale
203 ---- Angle of clockwise rotation - Code Deleted
208 0000 Best estimate of position or classification - Code Deleted
209 00-- Coincident feature or symbol - Code Deleted
3.10.2 Node Attribute Codes
200 0001 End point of linear manmade feature
This code is no longer used.
200 0002 Point on linear manmade feature
This code is no longer used.
3.10.3 Area Attribute Codes
000 0000 Outside area
This code is described in section 3.0.6.1.
200 0100 Church complex
Generally named, but may be labeled. Includes convent, monastery, retreat, friary, seminary.
200 0101 School campus
Generally named, but may be labeled. Includes university, college, academy, institute.
200 0102 Health care complex
Generally named, but may be labeled. Includes sanitarium, nursing home, clinic, medical center.
200 0103 Orphanage complex
Generally named, but may be labeled. Includes children's home.
200 0104 Prison compound
Generally named, but may be labeled. Includes prison farm, detention center, correctional institution, prison camp.
200 0105 Mobile home park
Generally labeled "Trailer Park" or "Mobile Home Park."
Until recently, the house-omission area tint was cleared from mobile home parks and
they were labeled. With the expanded
definition of built-up area, mobile home parks will be included in the built-up area and
will not be identified within built-up area.
200 0120 Ski area
Generally named, but may be labeled.
The ski lifts are digitized in the Pipelines, Transmission Lines, and Miscellaneous Transportation Features category.
200 0122 Athletic field
Athletic fields are outlined as shown in symbols 209(A), 516.16(C), or 2107.06(D). Generally labeled "Athletic Field." Includes ball park, equestrian area, polo field.
Individual fields may be unlabeled. Athletic fields whose perimeter is formed by a running track are generally unlabeled because the shape is distinctive.
In areas where multiple athletic fields have been outlined, the individual fields are digitized and given this code.
The term field does not always identify an athletic field. In some cases, parks have the term field in their name, for example "Farwell Field."
200 0123 Golf course
Generally labeled "Golf Course," but may be named. Includes country club, golf club.
200 0124 Shopping center
Generally labeled "Shopping Center," but may be named.
200 0125 Zoo
Generally named, but may be labeled. Includes zoo, zoological park, or wild animal park.
200 0126 Drive-in theater
This code identifies an area defined by symbols 252(A), 512.68(C), or 2111.08(D). Generally labeled "Drive-in Theater."
The screen of a drive-in theater is collected using code 200 0213.
200 0127 Raceway complex
Generally named, but may be labeled. Includes speedway, kennel club.
200 0128 Playground
This feature is no longer collected.
200 0140 Marina
Generally named, but may be labeled. Includes yacht club.
200 0141 Cable area
This feature is no longer collected in the Manmade Features category. See Hydrography category.
200 0150 Built-up area
This code has traditionally been applied to areas delineated by symbols 520(A), 115.1(B), 515.1(C), or 2110.11(D), but the minimum allowable size, density criteria, and exclusions for built-up area have been revised. As a result, there may be areas on the graphic that did not meet the previous criteria for built-up area, but do meet the revised criteria. These areas will be collected as built-up area. Because built-up area is collected based on these revised criteria rather than its depiction on the map, any built-up area shown in purple is not coded as photorevised.
Built-up area is defined as an area of intensive use, with much of the land covered by structures. The limits of the built-up area are determined by the relative concentration of buildings and associated intensive use areas, such as parking lots, and the existence of a systematic street pattern. Density of building and associated use areas will vary from densely concentrated areas downtown, to moderately concentrated residential areas where most of the property is developed. Built-up area is collected if the area is at least 30 percent built-up, is at least 40 acres in size, and has a minimum width of 660 feet.
Built-up area does not refer to political boundaries and can include incorporated and unincorporated areas as well as military reservations.
Although built-up area limits need not be fixed in relation to linear features, where practical, the limits of built-up area should share the edge with other linear features such as streams, boundaries, roads, or railroads. The outline of built-up area should be relatively smooth. It should not be extended to include a few buildings nor to exclude a few buildings when the smoothness of the edge would be effected. Where the perimeter streets are at least 30 percent developed, the built-up area should be extended across the street to include these buildings.
Housing developments where the street network is complete and building development is well underway, and it can reasonably be assumed that most of the development will be occupied, should be collected as built-up area.
Narrow strips, where there is only a road and buildings along both sides of the road, should not be collected as built-up area, even if they would connect an adjoining larger built-up area. A large built-up area that is separated from a smaller isolated built-up area may be extended to include the smaller area, if the smaller area is within 660 feet of the larger built-up area.
Within a built-up area, areas that are less than 30 percent developed, and are at least 80 acres in size, with a minimum width of 660 feet, are not collected as built-up area. In addition, if canal/ditches, lake/ponds, reservoirs, stream/rivers, swamp/marshes, parks, railway yards, runways, air facilities, cemeteries, golf courses, or exhibition grounds (fairgrounds) are collected as areas within a built-up area they are not also collected as built-up. All other area features collected within a built-up area are also collected as built-up areas. Any mobile home parks shown on the map within a built-up area are not collected in the DLG.
See section 3.10.1.5 for information on which buildings are collected within built-up areas.
200 0160 Industrial park
This code is no longer used. See 200 0162 for all industrial sites.
200 0161 Materials storage area
This feature is no longer collected.
200 0162 Refinery or industrial site
Industrial sites have traditionally not been identified on USGS maps. Generally only the buildings are shown with no attempt to identify the complex. This feature is only collected if the complex is identified with a label. Common labels include "Refinery."
200 0163 Tailings
This code identifies an area shown by symbols 324(A), 135.3(B), 535.4(C), or 2112.05(D). Generally labeled "Dredge Tailings" or "Tailings."
200 0164 Intricate surface area
This code identifies an area shown by symbol 328(A). This code is used only when the symbol is not labeled and the nature of the disturbed surface cannot be determined from other features in the area. For example, in an area of extensive strip mines, not all of the strip mines are labeled. However, labels are generally omitted only when it is obvious that the unlabeled features are also strip mines. This feature was used most often during photorevision, when the reason for the disturbed surface could not be determined.
200 0165 Oil sump or sludge pit
This code identifies an area shown by symbols 250(A), 512.86(C), or 2111.07(D). Generally labeled "Oil Sump" or "Sludge Pit." May be unlabeled.
200 0180 Tank farm
This complex is no longer collected. Individual tanks (200 0425) and any other structures are collected using the appropriate code.
200 0181 Feedlot or stockyard
This code identifies an area shown by symbols 258(A), 512.112(C), or 2111.14(D), or similar treatment. Generally labeled "Feedlot" or "Stockyard," but may be named.
If the symbol is less than 0.06 inch on the shortest side, digitize the feedlot or stockyard as a degenerate line. If the symbol is 0.06 inch or greater on the shortest side, digitize the feedlot or stockyard as an area.
200 0182 Experimental farm
Generally named, but may be labeled.
200 0183 Proving ground
Generally labeled "Proving Ground." Includes auto test track, tire proving ground.
200 0184 Firing range
Generally labeled "Rifle Range." Includes shooting range, pistol range, artillery impact area, artillery range, skeet range.
200 0190 Void area
This code is used to identify the area beyond the national boundary, to distinguish it from the background area. The perimeter of the void area is collected as an unattributed line, unless it is defined by a symbolized feature in the Manmade Features category.
3.10.4 Line Attribute Codes
200 0200 Conveyor
This code identifies a line shown generally by symbols 188(A), 512.95(C), or 2110.02(D), although it may be shown with a solid line. Generally labeled "Conveyor." The label may be omitted on a photorevised conveyor, in which case the conveyor may still be identifiable if it connects a mine or strip mine to a type of plant.
200 0201 Boardwalk
This code identifies a centerline digitized in a boardwalk shown by symbols 254(A), 512.71(C), or 2111.09(D). Generally labeled "Boardwalk."
If shown to scale (greater than 0.02 inch along the shortest axis), also use code 202 0--- to encode the width. Some depictions of boardwalks may indicate entryways onto the boardwalk or onto the beach. However, boardwalk is to be collected as a centerline and any entryways or other detail should be ignored.
200 0202 Wall
This code identifies a line that represents a wall as shown by symbols 192, 193 (A); 512.63, 512.64 (C); or 2110.06, 2110.06 (D). This feature is generally unlabeled and is generally found around prisons, some tanks (not to be confused with levees), and in Hawaii (labeled "Rock Wall").
If shown to scale (greater than 0.017 inch along the shortest axis), also use code 202 0--- to encode the width.
200 0203 Sea wall
This code identifies a line shown by symbols 159(A), 112.69(B), 512.48(C), or 2108.07(D). Must be labeled "Seawall" or "Floodwall."
200 0206 Fence line
This code identifies a line shown by symbols 522(A), 523.15(C), or 2110.07(D).
200 0207 Flume (nonwater)
This feature is no longer collected. Water flumes are digitized in the Hydrography category.
200 0209 Sewerline
This code identifies a line shown by symbols 116.13(B) or 516.24(C). Must be labeled "Sewerline."
Because the feature is only shown when it is submerged, also use code 200 0617.
200 0211 Coke ovens
This code identifies a centerline digitized along symbols 253(A) or 512.70(C).
200 0212 Recreational slide
This code identifies a line shown by symbols 188(A), 112.59(B), 512.117(C), or 2110.09(D). Generally labeled "Recreational Slide" or "Alpine Slide." Includes bobsled run, luge run.
200 0213 Screen (drive-in theater)
This code identifies the line within the drive-in theater, shown by symbols 252(A), 512.68(C), or 2111.08(D) that represents the screen.
200 0214 Drag strip, racetrack, or raceway
This code identifies a racetrack or raceway shown by symbols 105 or 106(A), 116.9(B), 516.15(C), or 2110.08(D). Generally labeled "Racetrack." Includes drag strip, raceway, speedway.
If shown to scale (greater than 0.02 inch along the shortest axis), also use code 202 0--- to encode the width.
This code does not apply to tracks shown with a single, dashed line, which are generally running tracks. See athletic field (200 0122).
See code 200 0127 if the racetrack is associated with a raceway complex.
200 0215 Athletic track
This code is no longer used. See code 200 0122, athletic field.
200 0250 Arbitrary closure line
This code is no longer used. Unattributed lines are used to close off areas.
200 0299 Processing line
This code is described in section 3.0.6.3.
3.10.5 Single-Point Attribute Codes
200 0300 Grave site
This feature is now collected as cemetery (200 0420).
200 0301 Historical marker
This code identifies a feature shown by symbols 198(A), 112.4 (B) 512.72(C) or 2111.03(D). Historical marker is defined as a structure, not a building, that commemorates people or past events. Common labels include "Historical Monument," "Historical Marker," "Monument," "Shrine." May also be named, for example "Treaty Oak," "Meade Pyramid," "Carranza Memorial."
200 0302 Mine tunnel entrance or cave
This code identifies a feature shown by symbols 184(A), 112.35(B), 512.80(C), or 2109.03(D). A degenerate line is digitized at the intersection of the arms of the symbol.
200 0303 Mine shaft
This code identifies a feature shown by symbols 186(A), 112.36(B), 512.81(C), or 2109.05(D).
200 0304 Prospect
The code identifies a prospect shown by symbols 185(A), 512.82(C), or 2109.04(D). A degenerate line is digitized at the intersection of the arms of the symbol.
200 0305 Tower
This code identifies a feature shown by symbols 198(A), 112.4(B), 512.72(C) or 2111.03(D). Must be labeled to identify it as a tower; label generally indicates type of tower.
If the label identifies the tower as water, also use the descriptive code 200 0604. (A feature labeled "WT" is a water tank; features identified as tanks are collected using code 200 0425.)
If the label identifies the tower as lookout, also use descriptive code 200 0614. This includes fire towers. A building labeled "Lookout" is collected as a general case building (200 0400) rather than a tower.
If the label identifies the tower as communication, also use descriptive code 200 0625. This includes antenna, microwave, radio, range, relay, and repeater.
If the label identifies the tower as for air traffic control, also use descriptive code 200 0626.
If the label identifies the tower as cooling, also use descriptive code 200 0627.
If the label identifies the tower as for determining position or safe course, also use the descriptive code for navigation (200 0629). This includes airway beacon, beacon, daybeacon, and light.
Towers are collected as degenerate lines, except for cooling towers, which are always collected as areas regardless of size.
Individual towers on transmission lines are not collected.
200 0306 Burner or stack
This code identifies a feature shown by symbols 198(A), 512.72(C) or 2111.03(D). Common labels include "Burner," "Stack," "Chimney," "Incinerator."
200 0307 Well
This code identifies a feature shown by symbols 194(A), 112.101(B), 512.83(C), or 2111.01(D). Generally labeled "Well," including a product such as "Oil Well." Product is not coded.
See 200 0311 if symbol is labeled "Drill Hole."
This code does not apply to water wells, which are digitized in the Hydrography category.
200 0308 Cliff dwelling
Cliff dwellings are shown by symbols 182(A), 112.34(B), 512.79(C), or 2106.10(D). This code describes a habitat built in the recesses of high vertical or overhanging faces of rock that is controlled and protected by a government or private agency, which has given the USGS permission to portray it. Because in the past well-known cliff dwellings may have been shown on USGS maps without the explicit permission of the administering agency, approval must be obtained before collecting such cliff dwellings from existing graphics.
200 0309 Light
This code is no longer used. Lights are collected as navigation towers (codes 200 0305 and 200 0629).
200 0310 Kiln
This code identifies a feature that is labeled to indicate it is a kiln. Common labels include "Charcoal Kiln," "Charcoal Oven," "Brick Kiln," "Lime Kiln."
If a kiln is 40 feet or more in diameter or along the shortest axis, it is collected as an area, rather than as a degenerate line.
200 0311 Drill hole
This code identifies a feature shown by symbols 194(A), 512.83(C), or 2111.03(D). Must be labeled "Drill Hole."
200 0312 Watermill
This feature is no longer collected.
200 0313 Anchorage
This feature is no longer collected.
200 0314 Guzzler
This code identifies a feature shown by symbols 198(A), 512.72 (C), or 2111.03(D). Common labels include "Guzzler," "Trick Tank."
200 0315 Located object or landmark object
This feature is no longer collected. Features shown by the located object or landmark object symbol--symbols 198(A), 112.4(B), 512.72(C), or 2111.03(D)--are collected only when they are named or labeled in such a way that they meet the collection criteria for a specific code.
200 0316 Campsite
This code identifies a feature shown by symbol 198(A), 512.72(C) or 2111.03(D). Must be labeled "Campsite."
This code also identifies a feature shown by symbol 257(A), 112.48(B), 512.115 (C), or 2111.11(D) that is labeled "Campsite."
200 0317 Wind generator
This code identifies a feature shown by the windmill symbol 199(A), 112.3(B), 512.69(C), or 2111.04(D). Must be labeled to indicate it is a generator to distinguish it from a windmill. (Unlabeled windmills or windmills named or labeled "Well" are collected in the Hydrography category, using code 050 0305.)
Digitize the wind generator as a degenerate line at the apex of the triangle portion of the symbol.
3.10.6 General Purpose Attribute Codes
200 0400 Building (general case)
All buildings shown by symbols 163, 164, 165 (A); 112.1(B); 512.52, 512.53 (C); or 2106.01 through 2106.03 (D) and buildings shown by old symbols 175, 176 (A) or 512.57, 512.58 (C) are given this attribute code. (This code is used for all buildings that were previously attributed as class 1 or class 2.)
This code is not applied to a building for which a specific code exists, such as a church or a hospital.
200 0401 Class 2 building
This code is no longer used. Both class 1 and class 2 buildings are now collected using code 200 0400.
200 0402 Church
This code identifies any building symbolized with a cross as in symbols 168-170, 172 (A), 512.55(C), or 2106.05(D).
200 0403 School
This code identifies any building symbolized with a flag as in by symbols 166-167, 170-173 (A); 512.54, 512.56 (C); or 2106.04(D).
200 0404 Municipal building
Previously, a wide range of building types were collected using this code. Codes for individual building types have been established. This code is no longer used.
200 0405 Courthouse
This code identifies a building. Must be labeled to indicate it is a courthouse.
200 0406 Post office
This code identifies a building. Must be labeled "Post Office."
200 0407 City hall or town hall
This code identifies a building. Must be labeled "City Hall," Town Hall," "Township Hall," "Village Hall."
200 0408 Hospital
This code identifies a building. Must be labeled to indicate it is a health care facility. May be named. Includes sanitarium, nursing home, clinic, medical center.
200 0409 Prison
This code identifies a building. Must be labeled to indicate it is a prison.
200 0410 Town, village, settlement, locality, or unincorporated village
This feature is no longer collected.
200 0411 Amphitheater
Must be labeled to indicate it is an amphitheater.
200 0412 Customs building
This code identifies a building. Generally labeled "Customs" or "Customs House."
See code 200 0455 for any building labeled "Port of Entry."
200 0413 Capitol
This code identifies a building. Must be labeled "Capitol" or "State Capitol."
200 0414 Community center
This code identifies a building. Generally labeled "Community Center." May be named.
200 0415 Museum
This code identifies a building. Generally labeled "Museum." May be named.
200 0416 Memorial
This code identifies a building. Generally labeled "Memorial." May be named.
200 0417 Firehouse
This code identifies a building. Must be labeled "Fire Station."
200 0418 Library
This code identifies a building. Must be labeled "Library."
200 0419 Auditorium
This code identifies a building. Must be labeled "Auditorium."
200 0420 Cemetery
This code identifies a burial site of one or more graves shown by symbols 213, 214, 215 (A); 112.72, 112.73 (B); 512.119, 512.120, 512.121 (C); or 2107.07, 2107.08 (D). Generally labeled "Cemetery." May be named. May also be identified only by a cross placed within the feature.
If the symbol is a small cross labeled "Grave," digitize the cemetery as a degenerate line at the intersection of lines of the cross. If the symbol is outlined and is less than 0.060 inch on the shortest side, digitize the cemetery as a degenerate line. If the symbol is outlined and is 0.060 inch or greater on the shortest side, then digitize the cemetery as an area.
200 0421 Sewage disposal plant
A sewage disposal plant may be shown as an individual building, or a group of buildings and associated ponds. Generally labeled "Sewage Disposal Plant."
In the DLG a sewage disposal plant is always collected as an area. If the feature is shown only as an individual building, digitize an area that is slightly larger than the building and encloses. If the feature is shown as a group of buildings or associated ponds, or both, digitize an area that encloses all associated structures.
The outline of the area is unattributed. Individual buildings within the area are collected as general case buildings (200 0400). The sewage disposal ponds and filtration beds are digitized in the Hydrography category.
200 0422 Waterworks
A waterworks may be shown as an individual building, or a group of buildings and associated ponds. Generally labeled "Water Filtration Plant" or "Waterworks."
In the DLG a waterworks is always collected as an area. If the feature is shown only as an individual building, digitize an area that is slightly larger than the building and encloses. If the feature is shown as a group of buildings or associated ponds, or both, digitize an area that encloses all associated structures.
The outline of the area is unattributed. Individual buildings within the area are collected as general case buildings (200 0400). The ponds are digitized in the Hydrography category.
200 0423 Oil reservoir
This feature is no longer collected.
200 0424 Well field
Generally labeled "Oil Field," "Gas Field," "Oil and Gas Field." May be named.
The perimeter of a well field is delineated by digitizing a line that connects the outermost wells of the well field.
200 0425 Tank
This code identifies a tank shown by symbols 196(A), 112.2(B), 512.65(C), or 2111.02(D) or shown by old symbols 197(A) or 512.66(C). Generally labeled "Tank." May be unlabeled. Includes a feature shown by one of these symbols and labeled "Storage Bin," "Silo," or "Standpipe."
If the tank contains water, as indicated by the label "Water Tank" or "WT" use the descriptive code 200 0604. Other products are not coded.
If the circle is 0.03 inch or less in diameter, digitize the tank as a degenerate line. If the circle is greater than 0.03 inch in diameter, digitize the tank as an area.
200 0426 Oil or gas platform
This code describes an offshore oil or gas platform shown by symbols 116.11(B) or 516.22(C). Must be labeled "Platform," "Oil Platform," "Gas Platform," or "Oil and Gas Platform."
If the square is 0.03 inches or less, digitize it as a degenerate line. If the symbol is greater than 0.03 inches, digitize it as an area.
200 0427 Mine dump
This code identifies a mine dump, which is a pile of waste rock, from a mine. It is shown by a variety of treatments. Must be labeled "Mine Dump" or "Slag Dump."
On 1:24,000-scale maps, mine dumps are shown in several ways. When the mine dump is shown by symbols 327(A) or 532.23(C), digitize a centerline in the symbol from one end to the other, at right angles to the tick marks. When the mine dump is large and has a regular hill-like shape, it may be shown by contours only and is digitized as an area. Outline the area, but do not digitize the contours. A large mine dump of an irregular shape covering a large area that may not be evident from the contours is overprinted with the intricate surface pattern as shown by symbols 328(A) or 535.4(C). Digitize an area outlined by the edge of the pattern.
On provisional edition maps all mine dumps are shown by symbol 2112.05(D) and labeled.
On 1:100,000-scale maps all mine dumps are shown by symbol 135.3(B). This symbol is digitized as an area and is distinguished from other disturbed surfaces only by the label.
200 0428 Open pit mine
Open pit mines are open pits from which mineral ores are removed. They may be shown by a variety of treatments. Generally named, but may be labeled "Mine" or "Open Pit Mine."
When an open pit mine is shown only by the crossed-pick symbols 183(A), 112.37(B), 512.84(C), or 2109.01(D) (without tint), digitize it as a degenerate line at the intersection of the symbol. If the crossed-pick symbol is labeled "Quarry," do not use this code, see code 200 0429.
When an open pit mine is shown by symbols 333(A), 135.2 (B), 535.3(C), or 2112.08(D), digitize as an area. If the outline of the open pit mine is symbolized by brown hachures symbol 333(A), digitize a centerline through the hachures.
When the open pit mine is shown only by contours, digitize as an area. The outline of the area is formed by digitizing the outermost contour line of the pit.
200 0429 Quarry
A quarry is an excavation in solid rock from which building stone is removed. Must be labeled "Quarry."
It is shown by the same symbology as the open pit mine. The feature is digitized in the same manner as described in the instructions for code 200 0428.
200 0430 Strip mine
A strip mine is a shallow surface excavation. Strip mines are shown by symbols 325, 326(A), 135.1(B), 535.1, 535.2(C), or 2112.06(D). Must be labeled "Strip Mine."
Strip mines are always collected as areas, by following the edge of the pattern.
200 0431 Landfill
This feature is not collected.
200 0432 Pit, unconsolidated material
A pit is an excavation of unconsolidated materials. Small pits are shown by symbols 255(A), 112.38(B), 512.85(C), or 2109.02(D), with no additional brown pattern or tint. In addition to the previous symbols, large pits add a pattern or tint as shown by symbols 333(A), 135.4 (B), 535.5(C), or 2112.08(D). Generally labeled "Pit," including a product such as "Gravel Pit."
A photorevised intricate surface area, shown by symbol 328(A), but labeled "Pit" is also collected using this code.
When the pit is shown by symbols 255(A), 112.38(B), 512.85(C), or 2109.02(D), digitize as a degenerate line at the intersection of the crossed shovels.
When the pit is shown by symbols 328, 333(A), 135.4(B), 535.5(C), or 2112.08(D), digitize it as an area. If the outline of the pit is symbolized by brown hachures symbol 333(A), the outline of the area, which is unattributed, is collected as a centerline through the hachures.
If a pit is labeled as gravel, sand, or clay, also use the appropriate descriptive code. Other products are not coded.
200 0433 Radio or television facility
This code identifies a building. Must be labeled "Radio Facility."
Do not use this code for a radio tower (see code 200 0305).
200 0434 Storage bin
This code is no longer used. These features are collected as general case buildings (200 0400) or tanks (200 0425) according to the symbology.
200 0435 Levee or dike
This code identifies a line shown by symbols 314, 315(A); 132.13(B); 532.11, 532.12 (C); or 2112.01, 2112.02 (D). Levees shown by contours are collected only as contour, in the Hypsography category, even if labeled.
Where the levee is shown by symbols 315(A), 532.12(C) or 2112.02(D), the centerline is digitized along the road or railroad.
On 1:100,000-scale maps, a levee carrying a road or railroad is not shown; instead the road or railroad is labeled "Road on Levee" or "Railroad on Levee." For these cases digitize the centerline of the road or the railroad.
200 0436 Spoil bank
This code identifies a feature generally shown by symbols 332(A), 532.13(C), or 2112.01(D). Spoil banks shown by contours are collected only as contour, in the Hypsography category, even if labeled.
200 0438 Reclaimed area
This code identifies an area, bounded by dashed purple lines, which contains contours overprinted with symbol 328(A) or an area represented by a 4 percent purple tint. Must be labeled "Reclaimed Strip Mine" or, if the area is not labeled, there must be a note in the collar of the map that identifies the area as reclaimed strip mines.
200 0445 Fairgrounds
Generally labeled "Fairgrounds." May include the administration as in "County Fairgrounds" or "State Fairgrounds." Parade grounds are not collected in the DLG.
200 0446 Rodeo grounds
Generally labeled "Rodeo Grounds."
200 0447 Corral
This code identifies a fenced animal enclosure shown by symbols 258(A), 112.44(B), or 512.112(C). Must be labeled "Corral."
If the symbol is less than 0.06 inch on the shortest side, digitize the corral as a degenerate line. If the symbol is 0.06 inch or greater on the shortest side, digitize the corral as an area.
200 0448 Boat ramp
A boat ramp may be shown by a variety of treatments. A boat ramp that is less than 40 feet along the shoreline, or is shown by a line as in symbol 516.14(C), is digitized as a degenerate line, approximately on the shoreline, where the symbol or label indicates the boat ramp enters the water. A boat ramp that is 40 feet or more along the shoreline is collected as an area.
200 0449 Campground
This code identifies a feature shown by symbols 257(A), 112.48(B), 512.115(C), or 2111.11(D). In some cases, the symbol may not be present and the feature may be indicated by a label only. Generally labeled "Campground."
If the tepee symbol is shown, digitize the campground as a degenerate line at the apex of the triangle portion of the tepee symbol. If the campground is identified by a label only, collect it as a degenerate line at the approximate center of the area indicated by the label.
200 0450 Fort
This code applies only to forts that are historically significant. Such forts are generally named, but may be labeled. (A complex shown with a reservation boundary symbol which has the word "Fort" in its name is collected in the Boundaries category. If there is an identifiable use of the land, such as a health care complex, it is also collected as the appropriate complex in the Manmade Features category. It is not, however, assigned the fort code.)
A historically significant fort may be shown as an individual building, a group of structures, or a site shown by symbol 198(A), 112.4 (B), 512.72(C), or 2111.03(D), but in the DLG a fort is always collected as an area.
If the fort is shown only as an individual building, digitize an area that is slightly larger than the building and encloses. If the feature is shown as a group of buildings or structures, digitize an area that encloses all associated structures.
The outline of the area is unattributed. Individual buildings within the area are collected as general case buildings (200 0400).
200 0451 Swimming pool
This code identifies a feature shown by symbols 179(A), 512.60(C), or 2205.01(D). Generally labeled "Swimming Pool" on earlier map editions. On later editions, this symbol is not labeled but bears a resemblance to a reservoir. It is generally found associated with country clubs, campgrounds, and community centers.
If the symbol is 0.03 inch or less on the longest side, digitize as a degenerate line. If the symbol is greater than 0.03 inch on the longest side, digitize it as an area.
200 0452 Archeological site, ruin, or Indian mound
This code describes an area of scientific interest that contains the material remains of past human activities and is controlled and protected by a government or private agency, which has given the USGS permission to portray it. Because in the past well-known archeological sites, ruins, and Indian mounds may have been shown on USGS maps without the explicit permission of the administering agency, approval must be obtained before collecting such areas from existing graphics.
Archeological sites or ruins are shown by symbols 181(A), 112.33(B), 512.78(C), or 2106.09(D). Generally labeled "Archeological Site," "Ruin," "Petroglyph," or "Pictograph," "Indian Mound." May be named.
If the symbol is less than 0.06 inch on the shortest side, digitize as a degenerate line. If the symbol is 0.06 inch or greater on the shortest side, digitize it as an area. Note that the outline of the symbol is solid rather than dashed if the symbol is less than 0.050 inch on the shortest side (both in reference A and reference B).
This code is also applied to an Indian mound that is shown by contours and labeled or named. An unattributed line is digitized to define the perimeter of the area, by following the contour shown as the base of the mound. If the area defined is 0.030 inch or less in diameter, digitize a degenerate line inside the contour shown as the top of the mound.
Any feature labeled "Ruin" that does not meet the above collection criteria is not collected. The only exception is a pier or wharf ruin (see codes 200 0466 and 200 0618).
200 0453 Recreation area, public use area
Generally labeled "Recreation Area" or "Public Use Area." May be named. Includes amusement park, camp. National or State recreations areas are collected only in the Boundaries category (section 3.5).
Do not collect roadside parks and viewpoints, vantage points, and overlooks using this code. See code 170 0223 in the Roads and Trails category.
200 0454 Picnic area
This code identifies a feature shown by symbols 256(A), 112.47(B), 512.116(C), or 2111.10(D). Do not collect a single picnic table symbol adjacent to a highway using this code. See code 170 0223 in the Roads and Trails category. Generally labeled "Picnic Area." Digitize the picnic area as a degenerate line at the apex of the triangle portion of the picnic table symbol.
200 0455 Port of entry
This code identifies a building. Must be labeled "Port of Entry."
See code 200 0412 for any building labeled "Customs."
200 0456 Stadium
This code identifies a building. Must be labeled "Stadium."
200 0457 Arena
This code identifies a building. Generally labeled "Arena." May be named.
200 0458 Armory
This code identifies a building. Generally labeled "Armory." May be named.
200 0459 Orphanage
This code identifies a building. Generally labeled "Orphanage." May be named.
200 0460 Observatory
This code identifies a building. Generally labeled "Observatory." May be named.
200 0461 Grange hall
This code identifies a building. Must be labeled "Grange Hall."
200 0462 Grain Elevator
This code identifies a building. Generally labeled "Grain Elevator" or "Elevator."
200 0465 Pile, dolphin, stump, or snag
This code identifies a feature shown by symbol 235 (A).
This code applies only to collection from topographic-bathymetric editions. This code does not apply to 1:100,000-scale maps.
Where the feature is shown by the single circle symbol it is collected as a degenerate line.
Where the feature is shown by a label collect it as an area. The outline of the area, which is defined by the limiting bathymetric contour, is unattributed.
200 0466 Breakwater, jetty, pier, dock, causeway, or wharf
This code identifies features shown by symbols 156-158 (A); 112.69, 112.70, 112.96 (B); 512.43 through 512.47, 512.162 (C); or 2108.05, 2108.06 (D).
A single-line structure, as in symbols 156 (A), 112.69 (B), 512.43 (C), or 2108.05, 2108.06 (D), is collected as a line and assigned this code. Any portion of the structure that defines the shoreline (that is, has land on one side and water on the other) is also collected as manmade shoreline (see code 050 0201) in the Hydrography category.
A structure shown to scale, as in symbols 157 (A), 512.44 (C), or 2108.05, 2108.06 (D), is collected as an area. The outline of the area is collected as an unattributed line in this category. However, the portion of the outline of the area that is shown by a black line is also collected as manmade shoreline (see code 050 0201) in the Hydrography category.
When a structure is shown as a ruin, as in symbols 112.70 (B) or 512.46, 512.47 (C), also assign the descriptive code for ruin (200 0618). When a ruined structure is shown to scale, the outline of the area is collected as an unattributed line in this category. However, the end that abuts land is also collected as shoreline (see code 050 0200) or manmade shoreline (see code 050 0201) in the Hydrography category.
When a structure is shown as submerged, as in symbols 112.69 (B) or 512.162(C), also assign the descriptive code for submerged (200 0617).
A covered pier or wharf, shown by symbols 158(A) or 512.45(C), is collected as a building (general case) in this category. However, any portion of the perimeter of the structure that bounds water is also collected as manmade shoreline (see code 050 0201) in the Hydrography category.
200 0467 Exposed wreck or wreckage
This code identifies a feature shown by symbols 239, 240 (A); 512.139, 512.140 (C); or 2113.05(D).
An exposed wreck shown by symbols 239 (A), 512.139 (C), or 2113.05 (D) is collected as a degenerate line, digitized at the center of the circle at the base of the symbol.
Exposed wreckage shown by symbols 240 (A) or 512.140 (C) is collected as an area. The outline of the area, which is defined by either a limiting danger line or a limiting bathymetric contour, is collected as an unattributed line.
200 0468 Sunken wreck (masts may be exposed)
This code identifies a feature shown by symbols 241, 242 (A) or 512.141(C). It is collected as a degenerate line, digitized at the center of the symbol.
200 0469 Drydock
This feature is no longer collected in the Manmade Features category. See the Hydrography category.
3.10.7 Descriptive Attribute Codes
200 0601 Underground
This code is no longer used.
200 0602 Under construction
This code describes a feature labeled "Under Construction."
200 0603 Abandoned
This code is no longer used. Any feature labeled "Abandoned" is collected using the appropriate feature code.
200 0604 Water
This code describes a tower (200 0305) or tank (200 0425) that is labeled "Water."
200 0605 Oil
This code is no longer used.
200 0606 Gas
This code is no longer used.
200 0607 Chemical
This code is no longer used.
200 0608 Covered
This code is no longer used. A pier or wharf that is covered is collected as a building.
200 0609 Gravel
This code describes a pit (200 0432) labeled "Gravel."
200 0610 Sand
This code describes a pit (200 0432) labeled "Sand."
200 0611 Clay
This code describes a pit (200 0432) labeled "Clay."
200 0612 Borrow
This code is no longer used.
200 0613 Radio
This code is no longer used. The communication code (200 0625) is used to describe a tower (200 0305) labeled "Radio."
200 0614 Lookout
This code describes a tower (200 0305) labeled "Lookout" or "Fire."
200 0615 Unincorporated
This code is no longer used.
200 0616 No population
This code is no longer used.
200 0617 Submerged
This code describes a sewer line (200 0209) labeled "Submerged," or a submerged pier or wharf (200 0466), shown by symbols 112.69 (B) or 512.162 (C).
200 0618 Ruin
This code describes a pier or wharf ruin shown by symbols 112.70 (B) or 512.46, 512.47 (C). This code is used only in conjunction with code 200 0466.
200 0619 Caliche
This code is no longer used.
200 0620 Chert
This code is no longer used.
200 0621 Cinder
This code is no longer used.
200 0622 Pumice
This code is no longer used.
200 0623 Shale
This code is no longer used.
200 0624 Scoria
This code is no longer used.
200 0625 Communication
This code describes a tower (200 0305) labeled to indicate it is used for communication. Includes antenna, microwave, radio, range, relay, and repeater.
200 0626 Control
This code describes a tower (200 0305) labeled to indicate it is used for air traffic control.
200 0627 Cooling
This code describes a tower (200 0305) labeled "Cooling."
200 0629 Navigation
This code describes a tower (200 0305) labeled to indicate it is used for navigation. Includes airway beacon, beacon, daybeacon, and light.
3.10.8 Parameter Attribute Codes
200 0000 Photorevised feature
This code is described in section 3.0.6.4. Because built-up area (200 0150) is collected based on revised criteria rather than its depiction on the map, this code is not applied to built-up area shown in purple.
202 0--- Width in mils of feature to scale
Enter the width in mils of a linear feature that is shown to scale in the spaces flush right.
203 ---- Angle of clockwise rotation
This code is no longer used.
208 0000 Best estimate of position or classification
This code is no longer used.
209 00-- Coincident feature or symbol
This code is no longer used.
For additional information regarding this Web page, contact Deb Southworth Green, in the Division of Information Resources and Technology Management, at Deb_Green@fws.gov
Return to the GIS Activities Home Page
Visit the U.S. Fish and Wildlife Service Home Page
Last Modified January 03, 2001 10:37 AM