U.S. Geological Survey - science for a changing world

Water Resources of the Caribbean




Lago de Cidra at Damsite - 50047550


Spillway at Lago de Cidra Reservoir .  Photo by José Agis, May 2001
Spillway at Lago de Cidra Reservoir.  Photo by José Agis, USGS.
Lago de Cidra is located in the municipio of Cidra, and was constructed in 1946 by the Puerto Rico Aqueduct and Sewer Authority (PRASA).   This reservoir was constructed as a public water-supply source to serve the municipios of Guaynabo, Aguas Buenas, Cidra, and Comerío, among others.

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 de Cidra at Damsite - 50047550

This reservoir has a drainage area equal to 8.6 square miles (13.8 square kilometers).  Originally, the reservoir had a water-storage capacity of 5,302 acre-feet (6.54 million cubic feet), but by 1997 the capacity had been reduced by sediment infilling to 4,670 acre-feet (5.76 million cubic meters).  The Guaynabo Filtration Plant produced 20 million gallons per day ( 75.7 million liters per day ) to serve about 160,000 persons.

Río de Bayamón Basin Map


Click onLake symbol in the basin map for combined real-rime reservoir and rainfall information

50047550 Río de Bayamón Basin Map


Chart correlating lake level elevation to water volume: Lago de Cidra at Damsite - 50047550

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 de Cidra, including:

Soler-López, L.R., 1999, Sedimentation Survey of Lago de Cidra, Puerto Rico, November 1997: U.S. Geological Survey Water-Resources Investigations Report 99-4144, 19 p., 1 pl.

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.

The table below shows the relationship between reservoir level and available water. This information is presented in graphical format in the figure above. Note that an acre-foot is a volume of water that would cover an acre (43,560 square feet) to a depth of 1 foot.

 

Lago de Cidra - 50047550

Reservoir elevation in Volume in
meters feet acre-ft million cubic
meters
403 1,322 4,673 5.76
402 1,320 4,166 5.14
401 1,317 3,490 4.31
400 1,313 2,734 3.37
399 1,310 2,235 2.76
398 1,307 1,816 2.24
397 1,304 1,461 1.80
396 1,300 1,082 1.33
395 1,297 849 1.05
394 1,294 659 0.81
393 1,291 504 0.62
392 1,287 340 0.42
391 1,284 252 0.31
390 1,281 184 0.23
389 1,277 112 0.14
388 1,274 73 0.09
387 1,271 43 0.05
386 1,268 20 0.02
385 1,264 4 0.00

Removing water hyacinths from Lago de Cidra Reservoir.  Photo by Orlando Ramos, August 1998
Removing water hyacinths from Lago de Cidra Reservoir.  Photo by Orlando Ramos, USGS.


Rain gage and Reservoir at Lago de Cidra.  Photo by Philip González, August 1998
Rain gage and Spillway at Lago de Cidra. Photo by Philip González, USGS.


 
USGS || Water || Biology || Geology || Geography || Help

Accessibility FOIA Privacy Policies and Notices

Take Pride in America home page. USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http:// vi.water.usgs.gov /public/rt/pr_lakes/lake_50047550.html
Page Contact Information: Caribbean Water Science Center Webmaster
Page Last Modified: Jan 18, 2008, 13:57