Green Valley Wwtp

SANTA CRUZ RIVER - OS· Pima, Arizona· Built 1981· Earth· 12 ft tall
Low Hazard Other Local Government

Key Takeaway

Green Valley Wwtp is classified as low hazard in Arizona. It was completed in 1981 and is 45 years old. Its primary use is other.

Physical Details

Dam Height 12 ft (taller than 9.8% in AZ)
Dam Length3,932 ft
Dam TypeEarth
Max Storage219 acre-ft
Normal Storage159 acre-ft
Surface Area21 acres
Drainage Area0 sq mi
Year Completed1981 (45 years old)
NID IDAZ00209

Safety Information

Low Hazard

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?

Emergency Action Plan: No
Last Inspection: February 23, 2012
State Regulated: Yes
Regulatory Agency: ARIZONA DEPARTMENT OF WATER RESOURCES

Ownership

PIMA COUNTY WASTEWATER MANAGEMENT

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Green Valley Wwtp?

Green Valley Wwtp 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 Wwtp?

Green Valley Wwtp is owned by PIMA COUNTY WASTEWATER MANAGEMENT (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Green Valley Wwtp built?

Green Valley Wwtp was completed in 1981, making it 45 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 Wwtp?

Green Valley Wwtp serves the following purposes: Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Green Valley Wwtp?

Green Valley Wwtp has a dam height of 12 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 Wwtp last inspected?

Green Valley Wwtp was last inspected on February 23, 2012. Inspection dates indicate when a formal review occurred, not the results of that inspection.

Data from the National Inventory of Dams (NID) maintained by the US Army Corps of Engineers. Dam conditions may have changed since the last update. This site is not affiliated with USACE. Do not use for emergency planning — contact your local dam safety program.