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 08/22/2015
55.1% of U.S. Total Conservation Capacity
50.7% of Mex. Total Conservation Capacity
Amistad Dam
Water Surface Elevation Feet Meters
Top of Normal Conservation 1,117.00 340.462
  @08/22/2015 1,089.03 331.935
Conservation Storages
Country Million
Cubic Meters
Thousand
Acre-Feet
United States 2,271 1,841
Mexico 1,770 1,435
Total Conservation* 4,040 3,276
*Values may not sum due to round-off error
Ownership and Releases @ 2400 hours on 08/22/2015
Country Million
Cubic Meters
Thousand
Acre-Feet
Requested
Releases
CMS
Requested
Releases
CFS
United States 1,427 1,157 20.0 706.0
Mexico 790 640 3.00 106.0
Total Storage 2,217 1,797 23.0 812.0
% of US Capacity @ Normal Cons. 62.8%
Inflows, Releases, and Losses for week of 08/16-08/22
U.S. Inflows 20.4 Total Inflows 27.5
U.S. Releases 20.8 Total Releases 25.1
U.S. Losses 11.5 Total Losses 17.9
Falcon Dam
Water Surface Elevation feet meters
Top of Normal Conservation 301.20 91.805
  @08/22/2015 282.45 86.090
Conservation Storages Normal Conservation
Country Million
Cubic Meters
Thousand
Acre-Feet
United States 1,913 1,551
Mexico 1,352 1,096
Total Conservation* 3,265 2,647
*Values may not sum due to round-off error
Ownership and Releases @ 2400 hours on 08/22/2015
Country Million
Cubic Meters
Thousand
Acre-Feet
Requested
Releases
CMS
Requested
Releases
CFS
United States 878 712 65.0 2300.0
Mexico 794 644 0.000 0.000
Total Storage 1,672 1,356 65.0 2300.0
*Values may not sum due to round-off error
% of US Capacity @ Normal Cons. 45.9%
Inflows, Releases, and Losses for week of 08/16-08/22
U.S. Inflows 15.4 Total Inflows 19.4
U.S. Releases 34.9 Total Releases 34.9
U.S. Losses 10.1 Total Losses 19.1
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 08/26/2015