3.9 PIPELINES, TRANSMISSION LINES, and MISCELLANEOUS TRANSPORTATION FEATURES - Major Code 190

Transportation data are collected in three separate categories (Roads and Trails; Railroads; and Pipelines, Transmission Lines, and Miscellaneous Transportation Features) for each map source, which means that the attribute codes from the three categories are not intermingled. However, the three categories are distributed by the National Cartographic Data Base office as one unit. Where collection of transportation is authorized from a map source, all of the transportation for that source is collected. If there are no features in a particular category on a source, the header record shows that the file was initialized to hold Roads and Trails, Railroads, or Pipelines, Transmission Lines, and Miscellaneous Transportation Features, but the neatlines of the source, the background area, and the area outside the map are the only information digitized for that category.

3.9.1 General Principles

3.9.1.1 Node Attribute Codes

There are no node attribute codes.

3.9.1.2 Area Attribute Codes

There are no general principles for area attribute codes.

3.9.1.3 Line Attribute Codes

Transmission lines and pipelines are not shown on USGS maps as continuous transportation features. These features are shown more for their landmark character. Pipelines in particular are often shown only where there is a visible scar on the ground. As explained in section 3.0.5, some features are suppressed for legibility concerns. Transmission lines and pipelines are often suppressed for other features, particularly roads. Do not attempt to connect the dropped portions of these features. Digitize these features as shown on the map.

3.9.1.4 Single-Point Attribute Codes

There are no single-point attribute codes

3.9.1.5 General Purpose Attribute Codes

Several general purpose attribute codes are used to collect complexes that are associated with transmission lines and pipelines. These include, power station or power plant (190 0400), hydroelectric plant (190 0402), pumping station or compressor station (190 0406), and measuring station or valve station (190 0408). Sometimes these features have been treated as individual buildings on the map, and sometimes they have been treated as complexes. However, in the DLG these features are collected as degenerate lines if the area they occupy is less than 120 feet in the shortest dimension, and as areas if they occupy 120 feet or more. When collected as an area, the outline of the area is unattributed. Individual buildings within the area are collected as general case buildings (200 0400) in the Manmade Features category.

On some maps, individual pumps have been shown with a circle or a located object symbol. These features are not collected.

3.9.1.6 Descriptive Attribute Codes

There are no general principles for descriptive attribute codes.

3.9.1.7 Parameter Attribute Codes

There are no general principles for parameter attribute codes.

3.9.1.8 List of Pipelines, Transmission Lines, and Miscellaneous Transportation Features Attribute Codes

3.9.2 Node Attribute Codes

This feature is no longer collected.

This feature is no longer collected.

This feature is no longer collected.

This feature is no longer collected.

3.9.3 Area Attribute Codes

This code is described in section 3.0.6.1.

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 collected in the Pipelines, Transmission Lines, and Miscellaneous Transportation Features category.

3.9.4 Line Attribute Codes

This code identifies a pipeline shown by symbols 190, 191 (A); 112.57, 112.58, 116.12(B); 512.93, 512.94, 516.23 (C); or 2110.04(D).

If shown by symbols 190(A), 112.58 (B), 512.94(C), or 2110.04(D) (if not labeled "Aboveground"), this code is used alone.

If the pipeline is shown by symbols 191(A), 112.57(B), 512.93(C), or 2110.04(D) (if labeled "Aboveground"), add descriptive code 190 0603 to describe it as aboveground.

If the pipeline is submerged and shown by symbols 112.58, 116.12(B), or 512.94, 516.23(C), add descriptive code 190 0606 to describe it as submerged. Any pipeline symbol shown in the water receives the submerged code.

If a canal is labeled "Pipeline Canal," digitize a centerline in the canal and apply this code as well as 190 0606 to indicate that it is submerged. The canal is collected in the Hydrography category.

Pipelines which carry water, shown in blue on the map, are collected in the Hydrography category.

This code identifies a power transmission line that is shown by symbols 187(A), 112.55(B), 512.91(C), or 2110.01(D). Collect the transmission lines as if the tower symbols did not exist. Do not digitize the towers. Any power transmission line labeled "Underground" on the map is not collected in the DLG.

This code identifies a telephone line shown by symbols 189(A), 112.54(B), 512.90(C), or 2110.03(D). Must be labeled "Telephone." Do not collect telegraph lines.

This code is no longer used. Codes for the individual features have been established.

This code is no longer used.

This code is no longer used.

This code identifies an aerial tramway shown by symbols 188(A), 112.59(B), 512.95(C), or 2110.02(D). Must be labeled "Tramway" or "Aerial Tramway."

This code describes a monorail shown by symbols 188(A), 112.59(B), 512.95(C), or 2110.02(D). Must be labeled "Monorail."

This code describes a ski lift shown by symbols 188(A), 112.59(B), 512.95(C), or 2110.02(D). Must be labeled "Ski Lift."

This code is described in section 3.0.6.3.

3.9.5 Single-Point Attribute Codes

There are no longer any single-point attribute codes.

This feature is no longer collected.

3.9.6 General Purpose Attribute Codes

A power station or power plant may be shown as an individual building, or a group of structures. Must be named or labeled to indicate it is a power station or power plant. If it is not named or labeled, collect only as a general case building in the Manmade Features category; do not make any assumptions about the function of the building.

A power station or power plant is collected as a degenerate line if the area occupied by the individual building or group of structures is less than 120 feet in the shortest dimension. If the area occupied is 120 feet or more in the shortest dimension, it is collected as an area. When collected as an area, the outline of the area is unattributed. Individual buildings within the area are collected as general case buildings (200 0400) in the Manmade Features category.

This code identifies a substation shown by symbols 112.56(B), 512.92(C), or 2111.13(D). Must be labeled "Substation."

If the symbol is 0.06 inch or less on the shortest side and is joined to a power transmission line, digitize the substation as a node. If the symbol is less than 0.06 inch on the shortest side and is not joined to a power transmission line, digitize the substation as a degenerate line. If the symbol is greater than or equal to 0.06 inch on the shortest side, collect it as an area. When collected as an area, the outline of the area is unattributed. Individual buildings within the area are collected as general case buildings (200 0400) in the Manmade Features category.

A hydroelectric plant may be shown as an individual building, or a group of structures. Must be named or labeled to indicate it is a hydroelectric plant. If it is not named or labeled, collect only as a general case building in the Manmade Features category; do not make any assumptions about the function of the building.

A hydroelectric plant is collected as a degenerate line if the area occupied by the individual building or group of structures is less than 120 feet in the shortest dimension. If the area occupied is 120 feet or more in the shortest dimension, it is collected as an area. When collected as an area, the outline of the area is unattributed. Individual buildings within the area are collected as general case buildings (200 0400) in the Manmade Features category.

This code identifies landing strips, runways, aprons, and taxiways, which have been shown by a variety of treatments. This code does not identify an airport facility, only the actual surfaces used by aircraft for take-off, landing, parking, and access to runways.

On 1:24,000-scale maps made before the mid 1980's, and starting again in 1994, landing strips, runways, aprons, and taxiways are generally outlined with a black line. The black line is solid if the landing strip, runway, apron, taxiway is paved and the black line is dashed if the landing strip or runway is unpaved. Generally, only paved aprons and taxiways are shown on the maps. This treatment is also found on provisional edition maps as shown by symbol 2110.08(D).

On 1:24,000-scale maps made from the mid 1980's to 1994, runways and paved landing strips are symbolized with a screened black line as shown by symbol 516.26 (C). Aprons and taxiways are shown by symbol 511.31(C). Unpaved landing strips are shown by symbol 511.30(C).

On 1:100,000-scale maps, landing strips and runways are shown with a screened black line as shown in symbol 116.16(B). Generally, aprons and taxiways are not shown on 1:100,000-scale maps.

On 1:24,000-scale maps, if the symbol is 0.02 inch or less on the shortest side, digitize as a line and assign this code. If the symbol is greater than 0.02 inch on the shortest side, digitize an unattributed line that follows the outline of the runway, landing strip, apron taxiway and assign the area within the outline this code.

On 1:100,000-scale maps, if the symbol is 0.01 inch or less on the shortest side, digitize as a line and assign this code. If the symbol is greater than 0.01 inch on the shortest side, digitize an unattributed line that follows the outline of the runway, landing strip, apron taxiway and assign the area within the outline this code.

Landing strips that are shown with a dashed line, as in symbols 511.30(C) or 2110.08(D) are also assigned descriptive code 190 0605 to indicate they are unpaved.

Landing strips, runways, aprons, and taxiways that are labeled "Under Construction" or "Abandoned" are also assigned the appropriate descriptive code (190 0601 and 190 0602, respectively).

This code identifies a landing area for helicopters as shown by symbols 198(A); 112.4, 116.15 (B); 511.32, 511.33 (C); or 2111.16(D). This code does not identify a heliport facility, only the actual surfaces used by helicopters for take-off, landing, parking, and access. When shown by symbols 198(A), 112.4(B), or 511.33(C), which is the located object symbol, digitize a degenerate line. If shown by symbols 116.15(B) or 511.32(C), and less than .04" long, digitize a degenerate line at the center of the symbol. If shown by symbols 116.15(B) or 511.32(C), and .04" long or more, digitize an unattributed line that defines the perimeter of the landing surface and assign this code to the area.

This code identifies an area that is generally named, but may be labeled, as a launch complex. There is no standard symbol for this feature.

Typically, the outline of the launch complex, which is collected as an unattributed line, is defined by a road.

The individual launch pads are not collected in the DLG.

A pumping station or compressor station may be shown as an individual building, or a group of structures. Must be named or labeled to indicate it is a pumping station or compressor station. If it is not named or labeled, collect only as a general case building in the Manmade Features category; do not make any assumptions about the function of the building.

A pumping station or compressor station is collected as a degenerate line if the area occupied by the individual building or group of structures is less than 120 feet in the shortest dimension. If the area occupied is 120 feet or more in the shortest dimension, it is collected as an area. When collected as an area, the outline of the area is unattributed. Individual buildings within the area are collected as general case buildings (200 0400) in the Manmade Features category.

On some maps, individual pumps have been shown with a circle or a located object symbol. These features are not collected.

Use this code only for pumping stations or compressor stations associated with oil or gas. Pumping stations associated with water (canals or ditches) are collected in the Hydrography category.

This code is no longer used. Codes for the individual features have been established (190 0409 and 190 0410).

A measuring station or valve station may be shown as an individual building, or a group of structures. Must be named or labeled to indicate it is a measuring station or valve station. If it is not named or labeled, collect only as a general case building in the Manmade Features category; do not make any assumptions about the function of the building.

A measuring station or valve station is collected as a degenerate line if the area occupied by the individual building or group of structures is less than 120 feet in the shortest dimension. If the area occupied is 120 feet or more in the shortest dimension, it is collected as an area. When collected as an area, the outline of the area is unattributed. Individual buildings within the area are collected as general case buildings (200 0400) in the Manmade Features category.

Do not collect individual valves shown with a circle or a located object symbol.

This code describes a seaplane ramp, shown by a variety of treatments on the 1:24,000-scale map and labeled. If the ramp is symbolized as a line less than 0.02 inches wide, digitize the line and give it this code. If the ramp is symbolized as a line 0.02 inches wide or wider, or as an area, then collect it as an area and give the area this code. The line defining the perimeter of the ramp is unattributed.

This code describes a seaplane landing area, shown by a variety of treatments on the 1:24,000-scale map and labeled. If the landing area is symbolized as a line less than 0.02 inches wide, digitize the line and give it this code. If the landing area is symbolized as a line 0.02 inches wide or wider, or as an area, then collect it as an area and give the area this code. The line defining the perimeter of the landing area is unattributed. Although in some cases it may be difficult to determine the extent of the landing area, it must be collected as an area based on context and placement of the label.

3.9.7 Descriptive Attribute Codes

This code is no longer used. Pipelines are assumed to be underground features, and so are not identified as such. Any other miscellaneous transportation feature labeled "Underground" on the map is not collected in the DLG.

This code describes a landing strip, runway, apron, taxiway (see code 190 0403) that is labeled "Under Construction."

This code describes a landing strip, runway, apron, taxiway (see code 190 0403) that is labeled "Abandoned."

This code describes any feature that is labeled "Aboveground." It is not used on features that are by definition assumed to be aboveground.

This code is no longer used. Any feature labeled "Closed" is collected using the appropriate feature code.

This code describes a landing strip (see code 190 0403) that is shown by a dashed line to indicate an unpaved surface. This code does not apply to 1:100,000-scale maps.

This code describes a pipeline that is submerged.

This code describes a power plant that is labeled "Nuclear."

3.9.8 Parameter Attribute Codes

This code is described in section 3.0.6.4.

This code is no longer used.

This code is no longer used.

This code is no longer used.