The International Boundary & Water Commission, United States Section
Updated Rio Grande National Ownership of Waters
Stored At The International Amistad and Falcon Dams
Determination of ownership in the reservoirs is made weekly for the accounting period ending on each Saturday at midnight. Field data collections, exchange of data between the U.S and Mexico, and computation of national ownerships are usually completed by Thursday afternoon or Friday morning of the following week. Data are PRELIMINARY and subject to REVISION.
Estimated ownership @ 2400 hours on 04/12/2025
21.2% of U.S. Total Conservation Capacity
11.4% of Mex. Total Conservation Capacity
Amistad Dam
Water Surface Elevation Feet Meters
Top of Normal Conservation 1,117.00 340.462
  @04/12/2025 1,050.62 320.230
Conservation Storages
Country Million
Cubic Meters
Thousand
Acre-Feet
United States 2,236.814 1,813.404
Mexico 1,743.282 1,413.294
Total Conservation* 3,980.096 3,226.698
*Values may not sum due to round-off error
Ownership and Releases @ 2400 hours on 04/12/2025
Country Million
Cubic Meters
Thousand
Acre-Feet
Requested
Releases
CMS
Requested
Releases
CFS
United States 574.126 465.449 15.0 530.0
Mexico 241.288 195.614 3.00 106.0
Total Storage 815.414 661.063 18.0 636.0
% of US Capacity @ Normal Cons. 25.67%
Inflows, Releases, and Losses for week of 04/06-04/12
U.S. Inflows (cms) 15.6 Total Inflows 20.8
U.S. Releases (cms) 15.4 Total Releases 18.8
U.S. Losses (cms) 5.75 Total Losses 8.16
Falcon Dam
Water Surface Elevation feet meters
Top of Normal Conservation 301.20 91.805
  @04/12/2025 256.61 78.215
Conservation Storages Normal Conservation
Country Million
Cubic Meters
Thousand
Acre-Feet
United States 1,927.193 1,562.392
Mexico 1,361.533 1,103.806
Total Conservation* 3,288.726 2,666.198
*Values may not sum due to round-off error
Ownership and Releases @ 2400 hours on 04/12/2025
Country Million
Cubic Meters
Thousand
Acre-Feet
Requested
Releases
CMS
Requested
Releases
CFS
United States 309.869 251.214 10.0 353.0
Mexico 112.788 91.438 7.00 247.0
Total Storage 422.657 342.652 17.0 600.0
*Values may not sum due to round-off error
% of US Capacity @ Normal Cons. 16.08%
Inflows, Releases, and Losses for week of 04/06-04/12
U.S. Inflows (cms) 3.61 Total Inflows 1.73
U.S. Releases (cms) 6.69 Total Releases 13.1
U.S. Losses (cms) 5.03 Total Losses 6.89
Note: All dam measurements based on elevation above mean sea level.
Rio Grande Flow and Reservoir Storage Conditions (Updated daily Monday through Friday)
1996-Present Amistad-Falcon Ownership Trends
For further information concerning the content of this page contact:
U.S. Section - Water Accounting Division
e-mail: WA-Data@ibwc.gov
Last Updated 04/16/2025