El Toro Reservoir

High HazardSatisfactory ConditionEmergency Action Plan: Yes

Location

CountyOrange
Nearest CityMission Viejo
River/StreamTr Oso Creek
Coordinates33.62410, -117.66820

Physical Characteristics

Dam TypeEarth
NID Height113 ft
Dam Height113 ft
Dam Length900 ft
Year Completed1967 (59 years old)

Storage & Hydraulics

NID Storage877 acre-ft
Max Storage877 acre-ft
Surface Area21 acres
Drainage Area0 sq mi

Ownership & Safety

PurposeWater Supply
OwnerEl Toro Water District
Owner TypePublic Utility
Hazard ClassificationHigh
Condition AssessmentSatisfactory
Last Inspection04/23/2025
Emergency Action PlanYes

Identifiers

NID IDCA00875
Federal IDCA00875
More InfoState Dam Safety Program

Nearby Dams

Lake Mission Viejo 1.1 mi High Upper Oso 3.2 mi High Rossmoor No. 1 3.6 mi High Veeh 3.7 mi High Upper Chiquita 3.9 mi High Galivan Retarding Basin 4.2 mi Low Agua Chinon 4.7 mi High Portola 4.9 mi High Round Canyon Retarding Basin 5.5 mi Low Sulphur Creek 5.6 mi High