Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Influence of Tributaries on Salinity of Amistad International Reservoir.
Author S. Miyamoto ; F. Yuan ; S. Anand
CORP Author Texas Agricultural Experiment Station, College Station.; Texas A and M Univ., El Paso. Agricultural Research and Extension Center.; Texas State Soil and Water Conservation Board., TX.; Environmental Protection Agency, Washington, DC.
Year Published 2006
Report Number TR-292; TSSWCB 04-11; 4280001
Stock Number PB2012-104149
Additional Subjects Salinity ; Tributaries ; Reservoirs ; Water flow ; Water resources ; Texas ; Mexico ; Water storage ; Construction ; Water pollution effects ; Drinking water
Library Call Number Additional Info Location Last
NTIS  PB2012-104149 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 07/11/2012
Collation 24p
Amistad International Reservoir is located at the Texas-Mexico border, and is fed by four main tributaries: the middle Rio Grande (MRG), the Pecos, the Devils, and the Rio Conchos from Mexico. This reservoir is among the largest reservoirs in the western US, and it was built to hold 6.7 billion m3 (5.5 million acre-ft.) of water. The structure was completed in 1968, and the Reservoir was filled near its capacity by 1972. The storage declined to 3.1 billion m3 by 1985, backed up to over 4.0 billion m3 for much of 1986 through 1992, then depleted to as low as 1.5 billion m3 during the last decade, following the drought which started in 1994. Salinity of the Rio Grande at Amistad prior to reservoir construction averaged 560 mg L-1. Starting in 1975, salinity reached 700 mg L-1, and remained at that level through 1983. This was followed by a steep increase in salinity which peaked in 1988, and again in 1996. Salinity of the outflow increased to 945 mg L-1 during 1988, and during February of that year, it reached the federal secondary drinking water standard of 1,000 mg L-1. There is a concern that salinity may exceed the limit with a greater frequency in the future. This problem of salinity increase at Amistad was noted a decade ago.