National

Aquatic Barrier Inventory & Prioritization Tool

Aquatic Barrier Tool

Southwest Region

Southwest region map
Map of 114,846 inventoried dams and 798 road-related barriers likely to impact aquatic organisms in the Southwest region.

Includes 4 states with:

114,846 inventoried dams, including:

  • 202 that have been reconned for social feasibility of removal
  • 16 that have been removed or mitigated, gaining 2,147 miles of reconnected rivers and streams

910,927 or more potential road-related aquatic barriers, including:

  • 1,437 that have been assessed for impacts to aquatic organisms
  • 798 that are likely to impact aquatic organisms
  • 11 that have been removed or mitigated, gaining 38.2 miles of reconnected rivers and streams
Explore how many dams or road-related barriers there are in a state, county, or watershed.
Identify and rank dams or road-related barriers that reconnect the most high-quality aquatic networks.

Statistics by state:

Inventoried damsReconned damsAssessed road-related barriers
Arizona2,9513551
New Mexico8,87310121
Oklahoma32,26418779
Texas70,75848586
Total114,8462021,437

2,474 inventoried dams and 137 assessed 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 Southwest region.