Hydrologic Conditions of Selected Reservoirs in Puerto Rico

The following graphs show water surface elevations above NGVD 1929 in selected reservoirs for several years, including 2015. The purpose of these graphs is to compare water surface elevations during 2015 with water surface elevations observed during years when documented droughts have occurred.



Graph showing reservoir water surface elevation, in feet above NGVD 1929 at Lago Loíza at Damsite near Trujillo Alto, PR (USGS 50059000).
* Levels established by the Puerto Rico Aqueduct And Sewer Authority (PRASA)


Graph showing reservoir water surface elevation, in feet above NGVD 1929, at Lago La Plata at Damsite near Toa Alta, PR (USGS 50045000). (USGS 50045000).
* Levels established by the Puerto Rico Aqueduct And Sewer Authority (PRASA)


Graph showing reservoir water surface elevation, in feet above NGVD 1929 at Lago Toa Vaca at Damsite near Villalba, PR. (USGS 50111210).
* Levels established by the Puerto Rico Aqueduct And Sewer Authority (PRASA)


Graph showing reservoir water surface elevation, in feet above NGVD 1929 at Lago Cerrillos at Damsite near Ponce, PR. (USGS 50113950).
* Levels established by the Puerto Rico Department of Natural and Environmental Resources (PRDNER)


Graph showing reservoir water surface elevation, in feet above NGVD 1929 at Lago Guajataca at Damsite near Quebradillas, PR. (USGS 500010800).
* Levels established by the Puerto Rico Electrical and Power Authority (PREPA)


Graph showing reservoir water surface elevation, in feet above NGVD 1929 at Lago Patillas at Damsite near Patillas, PR. (USGS 50093045).
* Levels established by the Puerto Rico Electrical and Power Authority (PREPA)


Graph showing reservoir water surface elevation, in feet above NGVD 1929 at Lago de Cidra at Damsite near Cidra, PR. (USGS 50047550).
* Levels established by the Puerto Rico Aqueduct And Sewer Authority (PRASA)