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