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Risk of Flow Alteration from Cumulative Surface Water Use for Texas and Oklahoma (VERSION 2)


Original Data Basin Creation Date
2013-12-29 17:00:00
Original Data Basin Modified Date
2014-01-20 13:19:07


The SARP Flow Alteration Assessment provides a regional characterization of the distribution and risk of flow regime impairment of streams and rivers by anthropogenic sources at the NHD+ segment scale. This map illustrates the cumulative risk of flow alteration (RFA) from surface water use by water use sector for Texas and Oklahoma.  Water use is based on state permits for surface water withdrawals and returns.  The risk is based on the volume of water used monthly in the drainage area relative to the monthly volume of flow.Risk of Flow Alteration categories: ZERO     - 0% mean monthly flow depletion,  LOW      - > 0-10%,  MEDIUM - > 10-20%,  HIGH      - >20-100%, and PROVISIONAL HIGH – >100%, [...]


Data Owner :
Emily Granstaff
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  • Data Basin



Data source
Blair Tirpak (USGS), Emily Granstaff (SARP/USFWS), Mary Davis (SARP), Analie Barnett (TNC), and Erik Martin (TNC)
Harvested on Fri May 23 09:34:32 MDT 2014 from Data Basin Service

Additional Information


Type Scheme Key
UniqueKey Data Basin 4689ed66f239441580ac48afe4b2097b

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