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 08/17/2019
56.2% of U.S. Total Conservation Capacity
15.6% of Mex. Total Conservation Capacity
Amistad Dam
Water Surface Elevation Feet Meters
Top of Normal Conservation 1,117.00 340.462
  @08/17/2019 1,086.01 331.015
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 08/17/2019
Country Million
Cubic Meters
Thousand
Acre-Feet
Requested
Releases
CMS
Requested
Releases
CFS
United States 1,809 1,467 50.0 1770.0
Mexico 256 208 3.00 106.0
Total Storage 2,065 1,674 53.0 1880.0
% of US Capacity @ Normal Cons. 79.7%
Inflows, Releases, and Losses for week of 08/11-08/17
U.S. Inflows 28.5 Total Inflows 36.2
U.S. Releases 56.7 Total Releases 61.3
U.S. Losses 17.9 Total Losses 20.5
Falcon Dam
Water Surface Elevation feet meters
Top of Normal Conservation 301.20 91.805
  @08/17/2019 265.73 80.995
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 08/17/2019
Country Million
Cubic Meters
Thousand
Acre-Feet
Requested
Releases
CMS
Requested
Releases
CFS
United States 541 439 56.3 1990.0
Mexico 230 186 10.0 353.0
Total Storage 771 625 66.3 2340.0
*Values may not sum due to round-off error
% of US Capacity @ Normal Cons. 28.3%
Inflows, Releases, and Losses for week of 08/11-08/17
U.S. Inflows 48.7 Total Inflows 54.6
U.S. Releases 60.9 Total Releases 70.9
U.S. Losses 10.6 Total Losses 15.1
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 08/23/2019