Alta Loma Basin #2

High HazardSatisfactory ConditionEmergency Action Plan: Yes

Location

CountySan Bernardino
Nearest CityRancho Cucamunga
River/StreamAlta Loma Channel
Coordinates34.14350, -117.58420

Physical Characteristics

Dam TypeEarth
NID Height22 ft
Dam Height22 ft
Dam Length3,000 ft
Year Completed1971 (55 years old)

Storage & Hydraulics

NID Storage85 acre-ft
Max Storage85 acre-ft
Surface Area26 acres
Drainage Area0 sq mi

Ownership & Safety

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

Identifiers

NID IDCA00320
Federal IDCA00320
More InfoState Dam Safety Program

Nearby Dams

Alta Loma Basin #1 0.4 mi High Demens Creek Debris Basin 1.5 mi High Deer Canyon Debris Basin 2.3 mi High Cucamonga Creek Debris Basin 3.2 mi High Day Creek Debris Basin 3.3 mi High Etiwanda Debris Basin 4.2 mi High San Sevaine Basin #5 5.0 mi High Hickory Basin 5.3 mi Significant San Antonio Dam 5.4 mi High Upland Basin 7.3 mi High