Thumbnail image of document cover: The Ecological and Hydrological Significance of Ephemeral and Intermittent Streams in the Arid and Semi-arid American Southwest

The Ecological and Hydrological Significance of Ephemeral and Intermittent Streams in the Arid and Semi-arid American Southwest

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Date Published: 
November 2008
Authors: 
Darius J. Semmens
David C. Goodrich
David P. Guertin
Julia Fonseca
Juliet Stromberg
Lainie R. Levick
Mariano Hernandez
Melanie Tluczek
Melissa Scianni
Robert A. Leidy
U.S. Environmental Protection Agency
William G. Kepner

This report represents a state-of-the-art synthesis of current knowledge of the ecology and hydrology of ephemeral (dry washes) and intermittent streams in the American Southwest, and may have important bearing on establishing nexus to traditional navigable waters (TNW) and defining connectivity relative to the Clean Water Act.

Cited In: 
Draft EIS
Final EIS
Reference Information: 

Levick, L.R., D.C. Goodrich, M. Fernandez, J. Fonseca, D.J. Semmens, J. Stromberg, M. Tluczek, R.A. Leidy, M. Scianni, D.P. Guertin, and W.G. Kepner. 2008. The Ecological and Hydrological Significance of Ephemeral and Intermittent Streams in the Arid and Semi-arid American Southwest. EPA/600/R-08/134; ARS/233046. U.S. Environmental Protection Agency and Agricultural Research Service Southwest Watershed Research Center.

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