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 04/19/2025
20.8% of U.S. Total Conservation Capacity
10.7% of Mex. Total Conservation Capacity
Amistad Dam
Water Surface Elevation Feet Meters
Top of Normal Conservation 1,117.00 340.462
  @04/19/2025 1,048.97 319.725
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 04/19/2025
Country Million
Cubic Meters
Thousand
Acre-Feet
Requested
Releases
CMS
Requested
Releases
CFS
United States 573.137 464.647 15.0 530.0
Mexico 206.645 167.529 3.00 106.0
Total Storage 779.782 632.176 18.0 636.0
% of US Capacity @ Normal Cons. 25.62%
Inflows, Releases, and Losses for week of 04/13-04/19
U.S. Inflows (cms) 20.0 Total Inflows 29.0
U.S. Releases (cms) 16.8 Total Releases 81.2
U.S. Losses (cms) 4.83 Total Losses 6.71
Falcon Dam
Water Surface Elevation feet meters
Top of Normal Conservation 301.20 91.805
  @04/19/2025 256.40 78.150
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 04/19/2025
Country Million
Cubic Meters
Thousand
Acre-Feet
Requested
Releases
CMS
Requested
Releases
CFS
United States 292.596 237.210 20.0 706.0
Mexico 124.092 100.603 37.0 1310.0
Total Storage 416.688 337.812 57.0 2020.0
*Values may not sum due to round-off error
% of US Capacity @ Normal Cons. 15.18%
Inflows, Releases, and Losses for week of 04/13-04/19
U.S. Inflows (cms) -3.800 Total Inflows 37.2
U.S. Releases (cms) 20.2 Total Releases 40.6
U.S. Losses (cms) 4.60 Total Losses 6.41
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 04/24/2025