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 04/20/2024
21.4% of U.S. Total Conservation Capacity
19.5% of Mex. Total Conservation Capacity
Amistad Dam
Water Surface Elevation Feet Meters
Top of Normal Conservation 1,117.00 340.462
  @04/20/2024 1,050.87 320.305
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 04/20/2024
Country Million
Cubic Meters
Thousand
Acre-Feet
Requested
Releases
CMS
Requested
Releases
CFS
United States 627.076 508.376 15.0 530.0
Mexico 193.884 157.183 3.00 106.0
Total Storage 820.960 665.559 18.0 636.0
% of US Capacity @ Normal Cons. 28.03%
Inflows, Releases, and Losses for week of 04/14-04/20
U.S. Inflows (cms) 20.9 Total Inflows 28.1
U.S. Releases (cms) 16.5 Total Releases 19.9
U.S. Losses (cms) 3.95 Total Losses 5.16
Falcon Dam
Water Surface Elevation feet meters
Top of Normal Conservation 301.20 91.805
  @04/20/2024 264.14 80.510
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 04/20/2024
Country Million
Cubic Meters
Thousand
Acre-Feet
Requested
Releases
CMS
Requested
Releases
CFS
United States 263.092 213.291 45.0 1590.0
Mexico 410.549 332.836 74.0 2610.0
Total Storage 673.641 546.126 119.0 4200.0
*Values may not sum due to round-off error
% of US Capacity @ Normal Cons. 13.65%
Inflows, Releases, and Losses for week of 04/14-04/20
U.S. Inflows (cms) 17.9 Total Inflows 23.2
U.S. Releases (cms) 39.5 Total Releases 168.0
U.S. Losses (cms) 2.43 Total Losses 6.46
Note: All dam measurements based on elevation above mean sea level.
Conversion Table
Rio Grande Flow and Reservoir Storage Conditions (Updated daily Monday through Friday)
1996-Present Amistad-Falcon Ownership Trends
Other Graphics
For further information concerning the content of this page contact:
Mr. William D. Finn
Chief, Water Accounting Division
e-mail: william.finn@ibwc.gov
(915) 832-4789
Last Updated 04/26/2024