Aquatic Barrier Prioritization ToolAquatic Barrier Tool

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Southwest Region

Southwest region map
Map of 51,492 inventoried dams in the Southwest region.

Includes 9 states with:

51,492 inventoried dams, including:

  • 103 that have been reconned for social feasibility of removal

416,877 or more potential road-related aquatic barriers, including:

  • 1,423 that have been assessed for impacts to aquatic organisms
    • 703 of these are likely to impact aquatic organisms
Explore how many dams or road-related barriers there are in a state, county, watershed, or ecoregion.
Identify and rank dams or road-related barriers that reconnect the most high-quality aquatic networks.

Statistics by state:

Inventoried damsReconned damsInventoried road-related barriers
Arizona4803240
New Mexico5111917
Oklahoma32,31017776
Texas18,19135590
Total51,4921031,423

1,483 inventoried dams and 50 inventoried road-related barriers were not analyzed because they could not be correctly located on the aquatic network or were otherwise excluded from the analysis. You can optionally include these in your download.

Note: These statistics are based on inventoried dams and road-related barriers. Because the inventory is incomplete in many areas, areas with a high number of dams may simply represent areas that have a more complete inventory.


You can help!

You can help improve the inventory You can help improve the inventory by sharing data, assisting with field reconnaissance to evaluate the impact of aquatic barriers, or even by reporting issues with the inventory data in this tool.

Contact us to learn more about how you can help improve aquatic connectivity in the Great Plains & Intermountain West.