State Water Resources Research Institute Program

Project ID: 2008NE171B
Title: Satellite-based Energy Balance to Assess Riparian Water Use
Project Type: Research
Start Date: 3/01/2008
End Date: 2/28/2009
Congressional District:
Focus Categories: Water Quantity, Invasive Species, Water Use
Keywords: evapotranspiration, remote sensing, metric, energy balance, invasive species
Principal Investigators: Irmak, Ayse ; Hergert, Gary ; Narumalani, Sunil ; Rundquist, Donald C. ; Stone, Gary L (University Of Nebraska)
Federal Funds: $ 19,995
Non-Federal Matching Funds: $ 40,044
Abstract: Water is the most important constraint facing agriculture in the most of the Central High Plains of the U.S.A., including Nebraska. In the last few years, restrictions have been imposed on Natural Resources Districts (NRD) due to provisions in Supreme Court Settlements for litigation involving the Republican and Platte Rivers. These settlements requires a need to study the impact of riparian vegetation on streamflow depletion to better understand and quantify beneficial and unbeneficial water that result in managing limited water resources in the basins. Our goal is to improve our ability to estimate riparian evapotranspiration (ET) by utilizing satellite and air-bone remote sensing data on major watersheds in the North Platte River. A physically surface energy balance model, METRICTM (Mapping Evapotranspiration at high Resolution using Internalized Calibration), will be used to calculate ET from Satellite remote sensing. Specific objectives of the proposal are to (1) quantify daily, seasonal, and annual distributions of ET over riparian systems at selected watersheds along the North Platte River Basin in Nebraska, and (2) compare water use and water availability on riparian species by utilizing ET maps with existing air-bone based riparian species distribution map. The outcome of this work would be quantitative surface energy balance algorithm for land estimates of ET for riparian systems. We will provide calibrated remote sensing ET methodology, and predicted ET along North Platte River. We will develop guidelines on riparian water use which will be of benefit to the state, particularly with regard to riparian control for water acclamation.

Progress/Completion Report, PDF

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