Using GIS for Hydrologic Analysis
Credits : 2 PDH
Course Description:
The function of a GIS in hydrologic modeling is to improve the efficiency and/or quality by reducing the labor intensity of the map manipulations, table look-ups, and repetitious computations required to define input parameters; enable data collection and analysis within variable geographic constructs; and produce more meaningful data outputs in terms of maps, tables, and reports.Topics:
- Overview of GIS
- Manual Approach to Input Parameter Generation
- Minimum information requirements to run an SCS model
- Characteristics of Land Cover in Area of Interest
- SCS Hydrologic Soil Groups
- GIS Requirements for the Modeling of a Complex Watershed
- Distribution of subwatersheds and network representation of a complex river basin
- GIS Implementation Issues
- Storage and Resolution
- Example of a detailed land cover distribution required for the modeling of a very small watershed
- Sources of Digital Format Geographic Data
- Digitizing Paper Format Data Sources
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Intended Audience: primarily for civil, construction, and hydraulic engineers.
Publication Source: US Geological Survey
Donald Parnell, PE