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Water Balance of Lake Powell: An Assessment of Groundwater Seepage and Evaporation

August 15, 1999
Salinity in the Colorado River Basin

August 1, 1999
Endangered and Threatened Species in the Lower Colorado River Basin, Delta and Sea of Cortez

January 1, 1999
Sediment Hydrology on the Colorado River: The Impacts of Draining Lake Powell

December 7, 1998