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  • Added 21 Sep 2016
  • Updated 28 Aug 2018

This map layer portrays major dams of the United States, including Puerto Rico and the U.S. Virgin Islands. The map layer was created by extracting dams 50 feet or more in height, or with a normal storage capacity of 5,000 acre-feet or more, or with a maximum storage capacity of 25,000 acre-feet or more, from the 79,777 dams in the U.S. Army Corps of Engineers National Inventory of Dams. This is a replacement for the April 1994 map layer.

This layer is sourced from


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RegionsBahamas, United States of America

Technical Details

Layer ID 22810
Data type Vector point
Feature count 8121
Attributes City, Year_Completed, State, Height_feet, Latitude, Alternate_Name, Owner_Type, Dam_Type, Name, Drainage_Area_square_miles, NID_ID_Code, Longitude, River, Downstream_Hazard_Potential, Maximum_Storage_acre_feet, Purposes, Surface_Area_acres, County, Owner, Normal_Storage_acre_feet
Services Vector Query API


Added 21 Sep 2016 ago
Last checked 5 Sep 2018 ago
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