Blanchard-offner

High HazardSatisfactory ConditionEmergency Action Plan: Yes

Location

CountyNapa
Nearest CityN/A
River/StreamTr Pope Creek
Coordinates38.63730, -122.46580

Physical Characteristics

Dam TypeEarth
NID Height47 ft
Dam Height47 ft
Dam Length785 ft
Year Completed1963 (63 years old)

Storage & Hydraulics

NID Storage274 acre-ft
Max Storage274 acre-ft
Surface Area19 acres

Ownership & Safety

PurposeOther
OwnerJim Collins
Owner TypePrivate
Hazard ClassificationHigh
Condition AssessmentSatisfactory
Last Inspection11/04/2025
Emergency Action PlanYes

Identifiers

NID IDCA01037
Federal IDCA01037
More InfoState Dam Safety Program

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