Annadel No. 1

High HazardFair ConditionEmergency Action Plan: Yes

Location

CountySonoma
Nearest CitySanta Rosa
River/StreamSpring Creek
Coordinates38.42710, -122.63440

Physical Characteristics

Dam TypeEarth
NID Height67 ft
Dam Height67 ft
Dam Length400 ft
Year Completed1956 (70 years old)

Storage & Hydraulics

NID Storage395 acre-ft
Max Storage395 acre-ft
Surface Area35 acres
Drainage Area1 sq mi

Ownership & Safety

PurposeWater Supply
OwnerCalifornia Department of Parks and Recreation
Owner TypeState
Hazard ClassificationHigh
Condition AssessmentFair
Last Inspection10/30/2025
Emergency Action PlanYes

Identifiers

NID IDCA00056
Federal IDCA00056
More InfoState Dam Safety Program

Nearby Dams

Matanzas Creek 1.7 mi High Santa Rosa Creek Reservoir 2.2 mi High The Hill Ranch 2.7 mi High Lake Ralphine 2.7 mi High Middle Fork Brush Creek 4.6 mi High Piner Creek 4.7 mi High Fountaingrove 6.0 mi High Pond No. 2 6.6 mi Low Salinger 7.1 mi Low Suttenfield 8.0 mi High