Lago Toa Vaca at Damsite - 50111210
Photo
of Lago Toa Vaca by Pedro Díaz, USGS. |
Lago Toa Vaca is located in the municipio of Villalba, and was
constructed in 1972 by the Puerto Rico Aqueduct and Sewer Authority
(PRASA). As of 1995,
the 13 percent of the water was used for public supply and 87
percent for irrigation. This reservoir supplies water to most
of the municipios located along the south coast of Puerto Rico.
The reservoir
has a drainage area equal to 22.0 square miles (35 square kilometers).
Originally, the reservoir had a water storage capacity (at maximum pool
elevation) of 60,140 acre-feet (74.2 million cubic meters), but by 1985
the capacity had been reduced by sediment infilling to 62.4 millon cubic
meters (50,620 acre-feet). During 1995, the Villalba Filtration
Plant produced 2 million gallons per day (7.6 million liters per day)
to supply potable water to the south coast of Puerto Rico.
Real-time Reservoir Level
Real-time
resevoir level graph updated hourly with the exception of
emergency transmissions which are at 5
minute intervals. To view real-time data, follow the link below.
Lago
Toa Vaca at Damsite - 50111210. |
Jacaguas Basin Map
Click on  for combined
real-time reservoir and rainfall information.
|
The U.S. Geological Survey, in
cooperation with PRASA, has produced a number of reports regarding
effects of sediment infilling on storage capacity of Lago Toa Vaca,
including:
Figueroa-Álamo, Carlos,
1990, Sedimentation survey of Lago Toa Vaca, Puerto Rico,
July 1990: U.S. Geological Survey Open-File Report 90-0199,
9 p.
In addition, the U.S.
Geological Survey, in cooperation with local government agencies,
has produced a number of reports regarding the effects of sediment infilling on the storage capacity
of principle water-supply reservoirs of Puerto Rico. The
results of these surveys are summarized in "Sedimentation survey
results of the principal water supply reservoirs of Puerto Rico,"
These
reports can be purchased at a nominal cost by contacting Information Desk at the U.S.
Geological Survey, GSA Center, 651 Federal Drive, Suite 400-15, Guaynabo,
PR 00965, 787-749-4346 ext. 296. Please contact Water-Use
Information, 787-749-4346 ext. 259, if you have other questions regarding
water supply in Puerto Rico.
|
U.S. Department of the Interior |
U.S. Geological Survey
