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 10/06/2018
52.8% of U.S. Total Conservation Capacity
29.3% of Mex. Total Conservation Capacity
Amistad Dam
Water Surface Elevation Feet Meters
Top of Normal Conservation 1,117.00 340.462
  @10/06/2018 1,084.55 330.570
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 10/06/2018
Country Million
Cubic Meters
Thousand
Acre-Feet
Requested
Releases
CMS
Requested
Releases
CFS
United States 1,392 1,129 20.0 706.0
Mexico 603 489 3.00 106.0
Total Storage 1,995 1,617 23.0 812.0
% of US Capacity @ Normal Cons. 61.3%
Inflows, Releases, and Losses for week of 09/30-10/06
U.S. Inflows 38.7 Total Inflows 58.0
U.S. Releases 20.9 Total Releases 24.7
U.S. Losses 5.40 Total Losses 7.73
Falcon Dam
Water Surface Elevation feet meters
Top of Normal Conservation 301.20 91.805
  @10/06/2018 273.44 83.345
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 10/06/2018
Country Million
Cubic Meters
Thousand
Acre-Feet
Requested
Releases
CMS
Requested
Releases
CFS
United States 819 664 7.50 265.0
Mexico 313 254 5.00 177.0
Total Storage 1,131 917 12.5 442.0
*Values may not sum due to round-off error
% of US Capacity @ Normal Cons. 42.8%
Inflows, Releases, and Losses for week of 09/30-10/06
U.S. Inflows 60.0 Total Inflows 125.0
U.S. Releases 5.62 Total Releases 10.9
U.S. Losses 5.35 Total Losses 7.31
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 10/11/2018