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- Description:
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 risk of flow alteration (RFA) due to evaporative loss from artificial
water bodies in local catchments for the 14-state SARP region. The amount
of water body surface is based on high resolution NHD and linked to NHD+
catchments. The risk is based on the percentage of the catchment land
surface covered by artificial water bodies (100 x water body surface area / watershed surface area)
Risk of flow alteration 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.
The Flow Alteration Assessment was developed in
collaboration with regional aquatic ecologists from the South Atlantic and Gulf
Coast Prairie LCCs. 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 the SIFN
Instream Flow Resources web page.
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.
- Data Provided By:
-
Analie Barnett (TNC), Mary Davis (SARP/SIFN), and
Emily Granstaff (USFWS/SARP).
- Map Service URL:
- http://sarpdata.net/arcgis/rest/services/Flow_Alteration/RFA_Local_Artificial_Waterbodies/MapServer/
- Content date:
-
not specified
- Citation:
-
Southeast Aquatic Resources Partnership.
2014. Risk of Flow Alteration from Artificial Waterbodies in Local Catchments of the SARP Region. This dataset was produced
for the Southern Instream Flow Network with funding from the Gulf Coast Prairie
and South Atlantic Landscape Conservation Cooperatives. www.southeastaquatics.net/programs/sifn/.
- Contact Organization:
-
Southeastern Aquatic Resources Partnership (SARP)
- Contact Person(s):
-
- Use Constraints:
- This work is licensed under a Creative Commons Attribution 3.0 License.
- Layer:
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This dataset is visible to everyone
- Dataset Type:
-
External Map Service
(ArcGIS)
Included in
4 Public Galleries
http://www.sarpdata.net/temp/FlowAlt_v1/Flow_Alteration_v1.zip
About the Uploader
Emily Granstaff
SARP Cartographer with SARP/USFWS
I work with the Southeast Aquatic Resources Partnership to support the development of regional aquatic habitat assessments and restoration projects in the Southeastern US.