NEW HOGAN LAKE

December 3, 2024

YEAR OVER YEAR

New Hogan Dam, located in California along the Calaveras River, serves as a crucial flood risk reduction structure that provides multiple benefits to the surrounding communities. Completed in 1963 by the US Army Corps of Engineers, this rockfill dam stands at a height of 210 feet and has a storage capacity of up to 348,598 acre-feet. While the dam has historically performed well in reducing the risk of flooding to downstream areas, a 2006 risk assessment highlighted potential concerns, such as the lack of spillway adequacy and the possibility of dam deformations during a major earthquake.

To manage these risks, USACE closely collaborates with local emergency managers, regularly updates emergency action plans, and conducts drills to enhance preparedness. The full-time staff at New Hogan Dam ensures regular maintenance and immediate inspections in case of any unusual events. By incorporating weather forecasts and monitoring localized flows, USACE can make informed decisions on dam operations to mitigate potential threats to downstream communities. While the scenarios of dam failure are considered extremely unlikely, the emergency action plan for New Hogan Dam is in place to lower the risk of life loss and protect the surrounding infrastructure from significant flooding impacts.

°F

°F

mph

Windspeed

%

Humidity

Storage 24hr Change -0.25%
Percent of Normal 193%
Minimum 23,499 acre-ft
2015-12-18
Maximum 311,058 acre-ft
2006-04-05
Average 112,456 acre-ft
Nid_Height 210
Hydraulic_Height 195
Primary_Dam_Type Rockfill
Drainage_Area 363
Year_Completed 1963
Dam_Height 155
Hazard_Potential High
Structural_Height 210
River_Or_Stream CALAVERAS RIVER
Surface_Area 4400
Nid_Storage 317100
Dam_Length 1960
Reservoir Levels

Weather Forecast

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