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EPA National Low Flows Completed

By New England Water Science Center May 16, 2018

Low streamflow has great ecological importance as it defines the minimum extent (and carrying capacity) of in-stream habitat and affects biota composition and distribution, and species trophic structure.

Maintaining minimum streamflows during seasonal low flow conditions mediates water quality including temperature and dissolved oxygen and provides volume for effluent dilution. We are exploring the effects of agriculture, dams, and urbanization on changes in low streamflows and several related characteristics over the past 100, 75, and 50 years (1916–2015, 1941–2015, and 1966–2015).

Modeled and observed trends in streamflows at managed basins in the conterminous U.S. from October 1, 1983 through September 30, 2016

This data release contains trend results computed on the basis of modeled and observed daily streamflows at 1,257 gages across the conterminous U.S. from October 1, 1983 through September 30, 2016. Study gages were selected from the GAGES-II dataset of gages classified as non-reference which means streamflows may be affected by human influence. Modeled daily streamflows were computed using the det
By
New England Water Science Center

Low streamflow trends at human-impacted and reference basins in the United States

We present a continent-scale exploration of trends in annual 7-day low streamflows at 2482 U.S. Geological Survey streamgages across the conterminous United States over the past 100, 75, and 50 years (1916–2015, 1941–2015 and 1966–2015). We used basin characteristics to identify subsets of study basins representative of reference basins with streamflow relatively free from human effects (n = 259),
Authors
Robert W. Dudley, Robert M. Hirsch, Stacey A. Archfield, Annalise G. Blum, Benjamin Renard
By
Water Resources Mission Area, New England Water Science Center

Low streamflow has great ecological importance as it defines the minimum extent (and carrying capacity) of in-stream habitat and affects biota composition and distribution, and species trophic structure.

Maintaining minimum streamflows during seasonal low flow conditions mediates water quality including temperature and dissolved oxygen and provides volume for effluent dilution. We are exploring the effects of agriculture, dams, and urbanization on changes in low streamflows and several related characteristics over the past 100, 75, and 50 years (1916–2015, 1941–2015, and 1966–2015).

Modeled and observed trends in streamflows at managed basins in the conterminous U.S. from October 1, 1983 through September 30, 2016

This data release contains trend results computed on the basis of modeled and observed daily streamflows at 1,257 gages across the conterminous U.S. from October 1, 1983 through September 30, 2016. Study gages were selected from the GAGES-II dataset of gages classified as non-reference which means streamflows may be affected by human influence. Modeled daily streamflows were computed using the det
By
New England Water Science Center

Low streamflow trends at human-impacted and reference basins in the United States

We present a continent-scale exploration of trends in annual 7-day low streamflows at 2482 U.S. Geological Survey streamgages across the conterminous United States over the past 100, 75, and 50 years (1916–2015, 1941–2015 and 1966–2015). We used basin characteristics to identify subsets of study basins representative of reference basins with streamflow relatively free from human effects (n = 259),
Authors
Robert W. Dudley, Robert M. Hirsch, Stacey A. Archfield, Annalise G. Blum, Benjamin Renard
By
Water Resources Mission Area, New England Water Science Center