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 06/20/2015
56.4% of U.S. Total Conservation Capacity
50.8% of Mex. Total Conservation Capacity
Amistad Dam
Water Surface Elevation Feet Meters
Top of Normal Conservation 1,117.00 340.462
  @06/20/2015 1,088.99 331.925
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 06/20/2015
Country Million
Cubic Meters
Thousand
Acre-Feet
Requested
Releases
CMS
Requested
Releases
CFS
United States 1,447 1,173 20.0 706.0
Mexico 769 623 3.00 106.0
Total Storage 2,216 1,797 23.0 812.0
% of US Capacity @ Normal Cons. 63.7%
Inflows, Releases, and Losses for week of 06/14-06/20
U.S. Inflows 36.5 Total Inflows 61.0
U.S. Releases 20.9 Total Releases 25.1
U.S. Losses 6.87 Total Losses 10.5
Falcon Dam
Water Surface Elevation feet meters
Top of Normal Conservation 301.20 91.805
  @06/20/2015 283.23 86.330
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 06/20/2015
Country Million
Cubic Meters
Thousand
Acre-Feet
Requested
Releases
CMS
Requested
Releases
CFS
United States 912 739 1.00 35.3
Mexico 816 662 0.000 0.000
Total Storage 1,728 1,401 1.00 35.3
*Values may not sum due to round-off error
% of US Capacity @ Normal Cons. 47.7%
Inflows, Releases, and Losses for week of 06/14-06/20
U.S. Inflows 30.5 Total Inflows 51.2
U.S. Releases 1.50 Total Releases 1.50
U.S. Losses 7.94 Total Losses 15.0
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 06/25/2015