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 01/24/2026
27.6% of U.S. Total Conservation Capacity
4.3% of Mex. Total Conservation Capacity
Amistad Dam
Water Surface Elevation Feet Meters
Top of Normal Conservation 1,117.00 340.462
  @01/24/2026 1,052.97 320.945
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 01/24/2026
Country Million
Cubic Meters
Thousand
Acre-Feet
Requested
Releases
CMS
Requested
Releases
CFS
United States 769.660 623.970 30.0 1060.0
Mexico 98.619 79.951 3.00 106.0
Total Storage 868.279 703.921 33.0 1170.0
% of US Capacity @ Normal Cons. 34.41%
Inflows, Releases, and Losses for week of 01/18-01/24
U.S. Inflows (cms) 20.5 Total Inflows 29.6
U.S. Releases (cms) 31.9 Total Releases 35.1
U.S. Losses (cms) 4.00 Total Losses 4.50
Falcon Dam
Water Surface Elevation feet meters
Top of Normal Conservation 301.20 91.805
  @01/24/2026 256.32 78.125
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 01/24/2026
Country Million
Cubic Meters
Thousand
Acre-Feet
Requested
Releases
CMS
Requested
Releases
CFS
United States 379.309 307.509 25.0 883.0
Mexico 35.084 28.443 8.00 283.0
Total Storage 414.393 335.952 33.0 1170.0
*Values may not sum due to round-off error
% of US Capacity @ Normal Cons. 19.68%
Inflows, Releases, and Losses for week of 01/18-01/24
U.S. Inflows (cms) 32.2 Total Inflows 32.3
U.S. Releases (cms) 14.6 Total Releases 22.5
U.S. Losses (cms) 1.99 Total Losses 2.18
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 01/28/2026