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 01/18/2020
55.5% of U.S. Total Conservation Capacity
15.9% of Mex. Total Conservation Capacity
Amistad Dam
Water Surface Elevation Feet Meters
Top of Normal Conservation 1,117.00 340.462
  @01/18/2020 1,086.65 331.210
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 01/18/2020
Country Million
Cubic Meters
Thousand
Acre-Feet
Requested
Releases
CMS
Requested
Releases
CFS
United States 1,702 1,380 25.0 883.0
Mexico 395 320 3.00 106.0
Total Storage 2,097 1,700 28.0 989.0
% of US Capacity @ Normal Cons. 75.0%
Inflows, Releases, and Losses for week of 01/12-01/18
U.S. Inflows 40.6 Total Inflows 59.3
U.S. Releases 26.4 Total Releases 29.8
U.S. Losses 7.62 Total Losses 9.36
Falcon Dam
Water Surface Elevation feet meters
Top of Normal Conservation 301.20 91.805
  @01/18/2020 264.42 80.595
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 01/18/2020
Country Million
Cubic Meters
Thousand
Acre-Feet
Requested
Releases
CMS
Requested
Releases
CFS
United States 618 501 35.0 1240.0
Mexico 101 82 12.0 424.0
Total Storage 719 583 47.0 1660.0
*Values may not sum due to round-off error
% of US Capacity @ Normal Cons. 32.3%
Inflows, Releases, and Losses for week of 01/12-01/18
U.S. Inflows 35.6 Total Inflows 44.4
U.S. Releases 32.2 Total Releases 55.0
U.S. Losses 2.78 Total Losses 3.26
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 01/22/2020