Document Type

Technical Report

Publication Date



Interactions among physical, chemical and biological processes in reservoirs can significantly alter the characteristics of the discharge (Neel 1963, Wright 1967, Hannan 1979) that, in turn, can influence the ecology of the river downstream .(Ward and Stanford 1979). Investigations of the Colorado River, system reveal that reservoir-induced changes in the river can also affect downstream reservoirs. The formation of Lake Powell, in 1963 was accompanied by reductions in suspended sediment and nutrient loading and changes in the seasonal temperature and discharge cycles of the Colorado River. In this paper, we evaluate how these changes have influenced the nutrient and trophic status of Lake Mead, the large reservoir located 450 km downstream from Lake Powell.


Hydrodynamics; Lake Mead (Ariz. and Nev.); Lake Powell (Utah and Ariz.); Limnology; Nitrates; Salinity; Sedimentation analysis; Sedimentation and deposition; Water temperature


Biochemistry | Environmental Health and Protection | Environmental Indicators and Impact Assessment | Environmental Monitoring | Fresh Water Studies | Terrestrial and Aquatic Ecology




From the Lake Mead Limnological Research Center, University of Nevada, Las Vegas. "Symposium on Surface Water Impoundments June 2-5, 1980. Minneapolis, Minnesota"--Handwritten inscription, P. 1.