SNOFLO


COGSWELL

RESERVOIR LEVELS
Wfk San Gabriel R
May 9, 2025


83°F

This Afternoon

72°F

Tonight

8mph

Windspeed

21%

Humidity

Cogswell Reservoir, located in San Gabriel, California, is a rockfill dam completed in 1935 for the primary purpose of flood risk reduction. With a dam height of 266 feet and a storage capacity of 8,969 acre-feet, Cogswell Reservoir plays a crucial role in managing water resources in the region. Owned and regulated by the local government, the dam is also used for hydroelectric power generation, irrigation, and water supply, highlighting its versatility and importance in the area.

Despite its satisfactory condition assessment and high hazard potential, Cogswell Reservoir undergoes regular inspections and enforcement to ensure its safety and reliability. The dam is state-regulated and permitted, with a history of meeting guidelines and maintaining emergency preparedness. With the Wfk San Gabriel River flowing through its vicinity, Cogswell Reservoir serves as a vital infrastructure for water management and climate resilience in Los Angeles County. As a significant feature in the region's water landscape, Cogswell Reservoir underscores the intersection of water resource management and environmental stewardship.

Year_Completed 1935
Dam_Height 266
River_Or_Stream Wfk San Gabriel R
Dam_Length 585
Primary_Dam_Type Rockfill
Surface_Area 146
Hydraulic_Height 239
Drainage_Area 38.4
Nid_Storage 8969
Hazard_Potential High
Nid_Height 266
       

Weather Forecast

Created with Highcharts 8.0.0humiditySat May 10Sun May 11Mon May 12Tue May 13Wed May 1464°128°192°0%60%120%180%