Cumulative Risk of Flow Alteration from Artificial Waterbodies in the SARP Region

The SARP Flow Alteration Assessment provides a regional characterization of the distribution and risk of flow regime impairment by anthropogenic sources at the NHD+ segment scale. This map illustrates the annual risk of impacts to flow from evaporative loss from artificial waterbodies within the whole watershed.  The cumulative risk is based on the percent of the land surface in the watershed covered by artificial water bodies (100 x water body surface area / watershed surface area)

Risk categories:
   ZERO -       0% land covered by artificial water bodies,                           
   LOW -        0-2%                           
   MEDIUM -   2-5%                            
   HIGH -        >5%
 
The map is scaled to illustrate larger rivers at the regional scale.  Zoom in to add small and medium rivers at the state scale and all streams and rivers at the county scale.

For more information about the risk of flow alteration assessment and how this map was developed for the Southern Instream Flow Network (SIFN), go to http://www.southeastaquatics.net/sarps-programs/sifn/instream-flow-resources.  For state summaries of flow alteration by river size class, see the attachment tab below.

Your comments about this map and the databases are welcome.  Please send comments to the map author using the Comment tab below.