Reach 11 Detention Dike 2 Reservoir Report

Last Updated: December 5, 2025

Reach 11 Detention Dike 2 is a vital structure located in Maricopa, Arizona, managed by the Bureau of Reclamation for flood risk reduction.


°F

°F

mph

Wind

%

Humidity

Summary

Completed in 1977, this earth dam stands at a height of 40 feet and spans 16,000 feet in length, with a storage capacity of 14,600 acre-feet. Despite being a federal project, it is not regulated by the state and has not undergone recent inspections due to its high hazard potential.

This detention dike plays a crucial role in protecting the surrounding area from potential flooding, with its primary purpose being flood risk reduction. While it also serves purposes such as irrigation, recreation, and water supply, its focus remains on safeguarding the community from water-related disasters. The structure's high-risk assessment underscores the importance of ongoing monitoring and maintenance to ensure its continued effectiveness in managing water resources in the region.

With Congressman David Schweikert representing the area, Reach 11 Detention Dike 2 remains under the oversight of the Bureau of Reclamation, responsible for its funding, design, construction, regulation, and operations. The lack of recent condition assessments and the high hazard potential highlight the need for continued vigilance and preparedness to mitigate any potential risks associated with this essential water management infrastructure.

Year Completed

1977

Dam Length

16000

Dam Height

40

River Or Stream

NONE

Primary Dam Type

Earth

Hydraulic Height

34

Drainage Area

32

Nid Storage

14600

Structural Height

40

Hazard Potential

High

Foundations

Rock

Nid Height

40
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.

Hazard Potential Classification

High
Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.