Map of Rio Grande and Columbia River Basins
Credit: Image by Robert Simmon, NASA GSFC Earth Observatory, Michael Tischler, NASA/GSFC.
MODIS Image of Columbia River Basin Snowcover, February 24, 2003
This image from the Moderate Resolution Imaging Spectroradiometer (MODIS) shows snowcover for the Columbia River Basin in the Cascade Mountains of Washington State, taken on February 24, 2003 (250 meter resolution). Credit: Jeff Schmaltz MODIS Land Rapid Response Team, NASA/GSFC
To do their jobs, water resource managers in the Columbia River Basin have mostly relied on data from sparsely located ground stations among the Cascade Mountains in the Pacific Northwest. But now, NASA and partnering agencies are going to provide United States Bureau of Reclamation water resource managers with high resolution satellite data, allowing them to analyze up-to-date water-related information over large areas all at once.
The pilot program is now underway with the Rio Grande and Columbia River basins where water is scarce while demands range from hydropower, to farming, fishing, boating and protecting endangered species. Water resource managers in these areas grapple with the big money stakes of distributing a finite amount of water to many groups. NASA satellite data offer to fill the data gaps in mountainous and drought-ridden terrain, and new computer models let users quickly process that data.
Land Surface Models (LSMs) from NASA, other agencies and universities, and NASA satellite data can be used to determine snowpack, amounts of soil moisture, and the loss of water into the atmosphere from plants and the soil, a process known as evapotranspiration. Understanding these variables in the water cycle is a key to managing water in such resource-limited areas.
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