San Joaquin Reservoir

High HazardSatisfactory ConditionEmergency Action Plan: Yes

Location

CountyOrange
Nearest CityNewport Beach
River/StreamTr Bonita Creek
Coordinates33.62020, -117.84180

Physical Characteristics

Dam TypeEarth
NID Height224 ft
Dam Height224 ft
Dam Length873 ft
Year Completed1966 (60 years old)

Storage & Hydraulics

NID Storage3,036 acre-ft
Max Storage3,036 acre-ft
Surface Area50 acres
Drainage Area0 sq mi

Ownership & Safety

PurposeWater Supply
OwnerIrvine Ranch Water District
Owner TypePublic Utility
Hazard ClassificationHigh
Condition AssessmentSatisfactory
Last Inspection05/07/2025
Emergency Action PlanYes

Identifiers

NID IDCA00853
Federal IDCA00853
More InfoState Dam Safety Program

Nearby Dams

Big Canyon 1.0 mi High Harbor View 1.8 mi High Sand Canyon 3.3 mi High Veeh 6.3 mi High Rossmoor No. 1 6.4 mi High Trabuco Retarding Basin 7.2 mi High Marshburn Retarding Basin 8.2 mi High Syphon Canyon 8.8 mi High Sulphur Creek 9.2 mi High Bee Canyon Retention Basin 9.4 mi Low