Green Valley Lake
Key Takeaway
Green Valley Lake is classified as low hazard in California. It was completed in 1925 and is 101 years old. Its primary use is water supply.
Physical Details
| Dam Height | 56 ft (taller than 65.1% in CA) |
| Dam Length | 425 ft |
| Dam Type | Multi-Arch |
| Max Storage | 250 acre-ft |
| Surface Area | 22 acres |
| Drainage Area | 1 sq mi |
| Year Completed | 1925 (101 years old) |
| NID ID | CA00758 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
Green Valley Mutual Water Company
Private
Nearby Dams
New Lake Arrowhead
San Bernardino, CA
High Hazard 225 ftLake Arrowhead
San Bernardino, CA
Significant Hazard 190 ftBear Valley
San Bernardino, CA
High Hazard 80 ftSeven Oaks
San Bernardino, CA
High Hazard 550 ftGlen Martin
San Bernardino, CA
High Hazard 55 ftGrass Valley
San Bernardino, CA
High Hazard 35 ftCedar Lake
San Bernardino, CA
High Hazard 28 ftSmall Canyon
San Bernardino, CA
High Hazard 68 ftFrequently Asked Questions
What is the hazard classification of Green Valley Lake?
Green Valley Lake is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Green Valley Lake?
Green Valley Lake is owned by Green Valley Mutual Water Company (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Green Valley Lake built?
Green Valley Lake was completed in 1925, making it 101 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.
What is the primary purpose of Green Valley Lake?
Green Valley Lake serves the following purposes: Water Supply, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Green Valley Lake?
Green Valley Lake has a dam height of 56 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.
When was Green Valley Lake last inspected?
Green Valley Lake was last inspected on June 14, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.