Stanley A. Mahr Reservoir

High HazardSatisfactory ConditionEmergency Action Plan: Yes

Location

CountySan Diego
Nearest CityLa Costa Oaks South
River/StreamTr Encinitas Cr
Coordinates33.09420, -117.22300

Physical Characteristics

Dam TypeEarth
NID Height79 ft
Dam Height79 ft
Dam Length950 ft
Year Completed1981 (45 years old)

Storage & Hydraulics

NID Storage166 acre-ft
Max Storage166 acre-ft
Surface Area8 acres
Drainage Area0 sq mi

Ownership & Safety

PurposeWater Supply
OwnerVallecitos Water District
Owner TypePublic Utility
Hazard ClassificationHigh
Condition AssessmentSatisfactory
Last Inspection04/03/2025
Emergency Action PlanYes

Identifiers

NID IDCA01280
Federal IDCA01280
More InfoState Dam Safety Program

Nearby Dams

San Marcos 1.3 mi High Melrose Avenue 2.1 mi High San Marcos 3.5 mi High San Dieguito 4.0 mi High Maerkle 4.5 mi High Olivenhain 5.0 mi High Lake Hodges 6.4 mi High Calavera 6.4 mi High Fairbanks 6.7 mi High Santa Fe Seasonal Storage 7.0 mi Low