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 01/28/2012
62.6% of U.S. Total Conservation Capacity
51.4% of Mex. Total Conservation Capacity
Amistad Dam
Water Surface Elevation Feet Meters
Top of Normal Conservation 1,117.00 340.462
  @01/28/2012 1,104.36 336.610
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 01/28/2012
Country Million
Cubic Meters
Thousand
Acre-Feet
Requested
Releases
CMS
Requested
Releases
CFS
United States 1,783 1,445 69.0 2440.0
Mexico 1,339 1,086 148.0 5230.0
Total Storage 3,122 2,531 217.0 7670.0
% of US Capacity @ Normal Cons. 78.5%
Inflows, Releases, and Losses for week of 01/22-01/28
U.S. Inflows 25.1 Total Inflows 33.0
U.S. Releases 44.2 Total Releases 198.0
U.S. Losses 4.20 Total Losses 7.45
Falcon Dam
Water Surface Elevation feet meters
Top of Normal Conservation 301.20 91.805
  @01/28/2012 272.90 83.180
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 01/28/2012
Country Million
Cubic Meters
Thousand
Acre-Feet
Requested
Releases
CMS
Requested
Releases
CFS
United States 836 678 70.0 2470.0
Mexico 266 216 7.00 247.0
Total Storage 1,102 893 77.0 2720.0
*Values may not sum due to round-off error
% of US Capacity @ Normal Cons. 43.7%
Inflows, Releases, and Losses for week of 01/22-01/28
U.S. Inflows 37.7 Total Inflows 193.0
U.S. Releases 58.4 Total Releases 77.1
U.S. Losses 5.04 Total Losses 6.37
Note: All dam measurements based on elevation above mean sea level.
Related Info:
U.S. Tributaries: 6,830 TCM Beginning of Current 5-Year Cycle: 10/25/2010
U.S. Springflow: 7,033 TCM Deliveries to U.S. during Current Week: 1,207 TCM / 979 AF
Combined U.S. flow: 13,863 TCM Deliveries to U.S. during Current Cycle: 371,702 TCM / 301,343 AF
U.S. 50/50 water: 3,789 TCM / 3,072 AF
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: wfinn@ibwc.gov
(915) 832-4789
Last Updated 02/03/2012