NPDP Dams Database

Units Conversion
Length 1 foot = 0.3048 meters
1 meter = 3.281 feet
100 feet = 30.48 meters
100 meter = 328.1 feet
Volume 1 acre-foot = 1,233.48 cubic meters
1 cubic meter = 8.10713 x 10-4 acre-feet
1 acre-foot = 325,851.4 gallons
1,000 acre-feet = 1,233,480 cubic meters
1,000,000 cubic meters = 810.713 acre-feet
1,000 acre-feet = 325,851,400 gallons

The NPDP Dams Directory is a database of dams in the United States and around the world. It has been compiled from a number of resources. We are grateful for the work of individuals,organizations, professional associations, dam owners, and government agencies who compile and maintain dam inventory data in the U.S. and around the world.

A special thanks to the organizations who developed and/or maintain the resources we have used directly. These include:

  • Global Water System Project (developers of the Global Reservoir and Dam Database (GRanD)
  • India Central Water Commission
  • International Commission on Large Dams (data manager for the World Registry of Dams)
  • Japan Dam Foundation
  • U.S. Army Corps of Engineers (data manager for the U.S. National Inventory of Dams)

Thank You