Schoolhouse Debris Basin

High HazardSatisfactory ConditionEmergency Action Plan: Yes

Location

CountyLos Angeles
Nearest CitySylmar
River/StreamMansfield Channel
Coordinates34.32560, -118.45930

Physical Characteristics

Dam TypeEarth
NID Height38 ft
Dam Height38 ft
Dam Length265 ft
Year Completed1962 (64 years old)

Storage & Hydraulics

NID Storage19 acre-ft
Max Storage19 acre-ft
Surface Area1 acres
Drainage Area0 sq mi

Ownership & Safety

PurposeDebris Control
OwnerLos Angeles County Department Of Public Works
Owner TypeLocal Government
Hazard ClassificationHigh
Condition AssessmentSatisfactory
Last Inspection09/23/2025
Emergency Action PlanYes

Identifiers

NID IDCA01172
Federal IDCA01172
More InfoState Dam Safety Program

Nearby Dams

Wilson Debris Basin 0.7 mi High Yarnell Debris Basin 2.1 mi Low Upper San Fernando 2.5 mi Low Los Angeles Reservoir 2.6 mi High Channel Diversion Dike 2.7 mi Low Ler Van Norman Bypass 2.8 mi Low Ler San Fernando 3.1 mi High Lopez Dam 3.2 mi High Pacoima 3.6 mi High Hansen Recreational Lake 5.6 mi Low