Precipitation Response Model

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Precipitation Response Model For Fourteenmile and
Dry Thirteenmile Creeks Rio Blanco County,
Colorado CEE 6440 GIS in Water
Resources Collin Robinson Fall 2004 Oral
Presentation
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Objective
obtain, process, and interpret
available geospatial data using ArcGIS tools and
extensions in order to develop a means of
estimating direct runoff for the ungaged
catchments under consideration
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Obtaining Data
all project data were downloaded from free
websites
political boundaries, populated places, roads
digital elevation and land cover data
soil polygons
precipitation data
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Processing Data
Terrain Analysis Using DEM (TauDEM) Dr. David
Tarboton http//hydrology.neng.usu.edu/taudem/
Analysis of Infiltration Characteristics (Soil
Conservation Service Method)
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Interpreting Data

• results of data processing serve as inputs for
  computation of direct runoff using SCS method as
  described by Dr. Maidment in several of his books
• the composite, or weighted, curve number should
  be corrected for antecedent moisture condition
• curve number then used in conjunction with storm
  data to calculate excess precipitation
• excess precipitation and watershed properties
  (area, length, slope, etc. from watershed
  delineation with ArcGIS tools and extensions) are
  used to calculate discharge
• important to recognize limitations of method

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Conclusion

• project has been successful
• end product computations will be included in
  report
• recommendations for improvement are welcome

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Credits

• Dr. David Tarboton
• Dr. David Maidment
• Mr. Jacob Young
• Mr. Stewart Edwards

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Questions?