Demens Creek Debris Basin

High HazardSatisfactory ConditionEmergency Action Plan: Yes

Location

CountySan Bernardino
Nearest CityRancho Cucamunga
River/StreamDemens Creek
Coordinates34.15790, -117.60400

Physical Characteristics

Dam TypeEarth
NID Height35 ft
Dam Height35 ft
Dam Length4,237 ft
Year Completed1980 (46 years old)

Storage & Hydraulics

NID Storage35 acre-ft
Max Storage35 acre-ft
Surface Area4 acres
Drainage Area2 sq mi

Ownership & Safety

PurposeDebris Control
OwnerCounty of San Bernardino Department of Public Works
Owner TypeLocal Government
Hazard ClassificationHigh
Condition AssessmentSatisfactory
Last Inspection03/10/2025
Emergency Action PlanYes

Identifiers

NID IDCA01278
Federal IDCA01278
More InfoState Dam Safety Program

Nearby Dams

Alta Loma Basin #1 1.2 mi High Alta Loma Basin #2 1.5 mi High Deer Canyon Debris Basin 2.1 mi High Cucamonga Creek Debris Basin 2.2 mi High Day Creek Debris Basin 3.7 mi High San Antonio Dam 4.2 mi High Etiwanda Debris Basin 5.3 mi High San Sevaine Basin #5 6.2 mi High Thompson Creek 6.4 mi High Hickory Basin 6.8 mi Significant