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Water Modeling and Data Analysis

The Water Resources Division performs data searches, data analysis, and some hydrologic modeling.  We have access to United States Geological Survey (USGS) hydrologic data and National Oceanic & Atmospheric Administration (NOAA) climatologic data and utilize this data to determine flow frequencies and durations for gaged streams.   We also analyze rainfall frequencies and evaporation amounts in calculating net depletion for lakes and wetlands.

Water Resources also uses several models, the most often used being the Corps of Engineers HEC-1 and HEC-2.   We also have the National Resource Conservation Service models TR-55 and TR-20, as well as HMR-52.

The HEC-1 and TR-55 models can be used to evaluate flood flows for use in structure design.

The HEC-2 program can be used to evaluate the effects of placing structures in a stream channel (step-backwater analysis).

Water Resources personnel have also designed and constructed spreadsheet and DOS-based water budget models.

For more complex modeling requirements, the division will contract with private consultants, and federal or state agencies.