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Water Flow Analysis in Colorado: The Divide Between Western and Eastern Regions

Explore the precipitation, stream flow, and snow depth across the Colorado Headwaters and Big Thompson Watersheds, divided by the Continental Divide. Learn about the Colorado River Basin and South Platte River Basin interconnection and the Colorado-Big Thompson Project. Utilize various data sources including Hydrologic Unit Maps and DEM Data for analysis and research.

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Water Flow Analysis in Colorado: The Divide Between Western and Eastern Regions

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  1. Western Colorado vs. Eastern ColoradoWhere does your water go? Constance L. Danner 29 November 2005

  2. Outline • Objectives • Background • Data Sources • Map Creation • Analysis • Future Work • Questions

  3. Objectives • Become familiar with Arc Hydro by plotting the Colorado Headwaters and Big Thompson Watersheds. • Evaluate the precipitation, stream flow and snow depth in regards to the Continental Divide.

  4. The West vs. The East Colorado River Basin http://waterknowledge.colostate.edu/colo_map.htm South Platte River Basin http://co.water.usgs.gov/nawqa/splt

  5. How are they connected? Map of Colorado-Big Thompson Project http://www.ncwcd.org/project_features/location_map.asp

  6. Colorado-Big Thompson (C-BT) Project by the Numbers http://www.ncwcd.org/project_features/cbt_by_the_numbers.asp

  7. Data Sources • Hydrologic Unit Maps (HUC) • http://water.usgs.gov/lookup/getspatial?huc250k • National Atlas of the United States • http://www.nationalatlas.gov/atlasftp.html • DEM Data from EPA Water Science Websites • http://www.epa.gov/waterscience/ftp/basins/gis_data/huc/10190006/ • http://www.epa.gov/waterscience/ftp/basins/gis_data/huc/14010001/ • National Resources Conservation Services for Colorado • http://www.co.nrcs.usda.gov/snow/ • NNDC Climate Data Online • http://cdo.ncdc.noaa.gov/pls/plclimprod/somdmain.subquery1

  8. Area of Interest

  9. DEM Processing

  10. What Time Frame to Choose? Missouri Basin Drought Data http://www.drought.unl.edu/whatis/palmer/missouri.gif Upper Colorado Drought Data http://www.drought.unl.edu/whatis/palmer/upco.gif

  11. Average Annual Stream Flow

  12. Average Annual SNOTEL Data

  13. Average Annual Precipitation Data

  14. Precipitation vs. Elevation

  15. Future Work • Final Paper and Analysis

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