LOWER BLUE LAKE - CA00380-3255
Dam Name: LOWER BLUE LAKE
State: CA
Downstream Hazard Potential: L
Incident Type: Non-Failure
Incident Date: 06/26/2018
Incident Driver: Seepage/Internal Erosion
Incident Mechanism 1: Excessive/Increased Seepage
Incident Mechanism 2
Incident Mechanism 3
Incident IDCA00380-3255
Incident DescriptionDamp spots on the downstream face along the length of the left embankment, localized small active seep from damp area, and seepage boil located ~10 feet downstream of the toe on left side of the dam.
Named Hydrologic Event
EAP Enacted (Y/N) due to IncidentNo
Fatalities (Number)0
Number of People Evacuated0
Number of Habitable Structures Evacuated0
Number of Habitable Structures Flooded0
Other Infrastructure ImpactsNone
Economic Damages (in $)None
ResponseImmediate response by dam owner and Division of Safety of Dams. Spillway stoplogs have been removed and the reservoir restricted.
Volume released at failure (ac-ft)
Additional Remarks or Updates
Owner TypeP
Dam TypeRE
Primary Purpose(s)H
EAPNR
Dam Height40 ft
Max Storage (ac-ft)5091.00
Surface Area (acres)198.00
Year Completed1885
NID NumberCA00380
River NameBLUE CREEK
Latitude38.6088
Longitude-119.927
Year Modified
Regulatory Agency(ies)DWR, SAFETY OF DAMS
Incident Time
Incident Duration
Incident Report ProducedYes
Information SourcesCA DSOD
