Download Aquatic Barrier Data

Data Version: 2.3.1 (3/10/2021)

The following download options include the latest available data within this tool. These data are subject to change at any point due to improvements to the inventory of aquatic barriers or improvements to the network connectivity analyses used by this tool. These data include priorities evaluated at the regional and state levels.

To select a different area for download or perform a custom prioritization, use the Prioritize page.

Please review the Terms of Use before downloading data.

Please Contact Us if you discover any issues with these data, need assistance interpreting or applying these data, or would like to contribute data.

Please note: this inventory consists of datasets from local, state, and federal partners. It is supplemented with input from partners with on the ground knowledge of specific structures. The information on barriers is not complete or comprehensive across the region, and depends on the availability and completeness of existing data and level of partner feedback. Some areas of the region are more complete than others but none should be considered 100% complete.

Download Dams by State

Alabama (17,136 dams)
Arkansas (5,953 dams)
Florida (5,412 dams)
Georgia (31,064 dams)
Kentucky (3,234 dams)
Louisiana (916 dams)
Mississippi (7,044 dams)
Missouri (12,869 dams)
North Carolina (6,091 dams)
Oklahoma (13,240 dams)
Puerto Rico (389 dams)
South Carolina (3,257 dams)
Tennessee (4,409 dams)
Texas (18,183 dams)
Virginia (8,020 dams)

Download Road-related Barriers by State

Alabama (2,772 barriers)
Arkansas (3,017 barriers)
Florida (1,510 barriers)
Georgia (1,216 barriers)
Kentucky (916 barriers)
Louisiana (1,769 barriers)
Mississippi (954 barriers)
Missouri (9,770 barriers)
North Carolina (1,925 barriers)
Oklahoma (778 barriers)
Puerto Rico (95 barriers)
South Carolina (1,030 barriers)
Tennessee (926 barriers)
Texas (568 barriers)
Virginia (2,905 barriers)