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Hydrologic Urban Indicators

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Storm water, the rainfall that runs off urban surfaces such as rooftops, pavement, and lawns, can affect streams in a number of ways. As urban development increases, storm water can run quickly into streams, increasing the volume and peak flows and reducing summer flows. Sediment and other contaminants can also be carried into the streams.

The Washington Department of Ecology (WDOE), the state agency responsible for monitoring local compliance with stormwater regulations and permits, asked the USGS to identify streamflow statistics that WDOE could use to monitor urban streams and the effects of stormwater management efforts. Specific streamflow statistics evaluated in the study will help WDOE monitor the effects of development on streamflow in urban areas.

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Page Last Modified: Thursday, 15-Dec-2016 13:07:52 EST