State Water Resources Research Institute Program

Project ID: 2010WY58B
Title: Development of GIS-Based Tools and High-Resolution Mapping for Consumptive Water Use for the State of Wyoming
Project Type: Research
Start Date: 3/01/2010
End Date: 2/29/2012
Congressional District: 1
Focus Categories: Irrigation, Water Use, Water Supply
Keywords: Crop consumptive water use, Evapotranspiration, Reference crop ET, Crop ET, Crop irrigation requirements, Spatial interpolation of weather data
Principal Investigators: Park, Gi-Hyeon (University of Wyoming); Junna, Mohan
Federal Funds: $ 11,616
Non-Federal Matching Funds: $ 78,315
Abstract: Accurate estimation of crop consumptive water use in the State of Wyoming is a key component for making decisions in irrigational policy and allocations of water and administration of water rights. State water resources managers utilize crop consumptive water use data to monitor and guide farmers and make a sustainable future plan and decision. The proposed project will utilize the best available local weather station data (102 stations for precipitation and temperature in Wyoming) along with Parameter-elevation Regressions on Independent Slopes Model (PRISM) data to accurately represent spatial variation of weather pattern for the three major river basins, i.e. North Platte, Green, and Bear River basins in the State of Wyoming (Figure 1). GIS-based ET calculation tools (ArcInfo reference ET tool and ArcGIS ET calculation tool) and a web-based analysis tool will be developed to help water resources managers as well as local water users to make operational decisions in an easier and faster fashion than before. The ArcInfo reference ET tool will use historical and real-time daily data to calculate the daily, monthly and seasonal reference ET at 1 km x 1 km spatial resolution. ArcGIS ET calculation tool will be installed in a PC or laptop and will provide user-interface to define parameters (area of interest, gridded crop coefficient, time step, ET method, effective precipitation, and water supply condition) for the calculation of crop ET, Consumptive Irrigational Requirement (CIR), Consumptive Water Use (CU) for the area of interest within the three major basins (N. Platte, Green, and Bear) in Wyoming. We will produce gridded daily, monthly and seasonal weather data using historical from NCDC and gridded real-time daily weather data from SEO and ACIS, and archive them in SEOâs data server. SEO data server will supply data required for GIS-based ET calculator.

Progress/Completion Report, 2010, PDF
Progress/Completion Report, 2011, PDF

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