Variability and trends in runoff efficiency in the conterminous United States
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Abstract
Variability and trends in water-year runoff efficiency (RE) — computed as the ratio of water-year runoff (streamflow per unit area) to water-year precipitation — in the conterminous United States (CONUS) are examined for the 1951 through 2012 period. Changes in RE are analyzed using runoff and precipitation data aggregated to United States Geological Survey 8-digit hydrologic cataloging units (HUs). Results indicate increases in RE for some regions in the north-central CONUS and large decreases in RE for the south-central CONUS. The increases in RE in the north-central CONUS are explained by trends in climate, whereas the large decreases in RE in the south-central CONUS likely are related to groundwater withdrawals from the Ogallala aquifer to support irrigated agriculture.
Study Area
Publication type | Article |
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Publication Subtype | Journal Article |
Title | Variability and trends in runoff efficiency in the conterminous United States |
Series title | Journal of the American Water Resources Association |
DOI | 10.1111/1752-1688.12431 |
Volume | 52 |
Issue | 5 |
Year Published | 2016 |
Language | English |
Publisher | Wiley |
Contributing office(s) | National Research Program - Central Branch |
Description | 10 p. |
First page | 1046 |
Last page | 1055 |
Country | United States |
Online Only (Y/N) | N |
Additional Online Files (Y/N) | N |
Google Analytic Metrics | Metrics page |