Riverside Diversion Dam
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The Riverside Diversion Dam (or simply the Riverside Dam) was a diversion dam on the Rio Grande to the southeast of
El Paso, Texas El Paso (; "the pass") is a city in and the county seat, seat of El Paso County, Texas, El Paso County in the western corner of the U.S. state of Texas. The 2020 population of the city from the United States Census Bureau, U.S. Census Bureau w ...
. The dam was owned by the
United States Bureau of Reclamation The Bureau of Reclamation, and formerly the United States Reclamation Service, is a federal agency under the U.S. Department of the Interior, which oversees water resource management, specifically as it applies to the oversight and opera ...
, and diverted water into the Riverside Canal for use in irrigation in the El Paso Valley. The dam became obsolete with completion of a cement-lined canal carrying water from the upstream American Diversion Dam to the head of the canal. It was partially removed in 2003.


Construction

The 21 May 1906 treaty between the United States and Mexico for "an equitable distribution of the waters of the Rio Grande" guaranteed Mexico up to annually, with the Americans taking the rest, except in time of drought when the shares would be reduced on a percentage basis. The Mexicans would withdraw their water from the Rio Grande at the Acequia Madre about downstream from the point where the river starts to form the international border. Riverside Diversion Dam was the lowermost dam of the Rio Grande Project, downstream from the Mexican dam. The dam, completed in 1928, was a concrete weir with radial gates, located on the Rio Grande about southeast of El Paso. It had a structural height of and a hydraulic height of , with a weir crest length of . The crest elevation was The spillway had six radial gates, each , with an overflow weir for excess water. The dam could deliver downstream and could divert into the Riverside Canal headworks through 5 radial gates, each . On average the El Paso County diverted into the Riverside Diversion Dam / Riverside Canal each year between 1928 and 1998.


American dam and canal

To ensure that they got their agreed share of Rio Grande water, in 1935 Congress authorized construction of the American Dam, which measures the Mexican portion before it reached the international border and lets it continue along the river to the International Dam, while diverting the rest along the new long
American Canal The American Canal is an irrigation canal in the Upper Rio Grande Valley near El Paso, Texas. The canal acquires water from the Rio Grande from the American Diversion Dam at the Texas–New Mexico–Mexico border, northwest of downtown El ...
to the Franklin Canal, used to irrigate the long El Paso valley. Between 1997 and 1998 a cement-lined extension to the American Canal replaced part of the earthen Franklin Canal. The Rio Grande American Canal Extension fed water into the Riverside Canal near to the dam.


Failure and removal

The Riverside Diversion Dam failed on 9 June 1987 due to flooding in the Rio Grande. With completion of the Rio Grande American Canal Extension, there was little need to rebuild the dam. In September 2003 the Socorro Field Division of the Bureau of Reclamation removed part of the failed diversion dam and coffer dam to improve flood control capability in the Rio Grande. The project required coordination between the Bureau of Reclamation, International Boundary and Water Commission and El Paso County Water and Improvement District No. 1.


References

Citations Sources * * * * * * {{Rio Grande dams and diversions Dams in Texas Dams completed in 1935 Dams on the Rio Grande