Crosby Tank Detention Dam Reservoir Report
Nearby: Joshua Crosby Iverson Detention Dam
Last Updated: December 25, 2025
Crosby Tank Detention Dam, located in Mohave County, Arizona, was completed in 1959 by the Bureau of Land Management to serve as a flood risk reduction structure along Langs Run.
°F
°F
mph
Wind
%
Humidity
Summary
The dam is a gravity type structure made of stone with a height of 31 feet and a hydraulic height of 26 feet. It has a storage capacity of 1691.6 acre-feet and a surface area of 139.3 acres, serving the primary purpose of flood risk reduction.
Despite being classified as having a low hazard potential, the dam's condition assessment is poor, with the last inspection conducted in July 2008. The risk assessment for the dam is moderate, indicating a need for careful monitoring and potential maintenance measures to ensure its continued functionality. With a history of federal ownership and funding by the Bureau of Land Management, Crosby Tank Detention Dam remains a crucial infrastructure in safeguarding the surrounding areas from flooding events, making it a significant asset for water resource and climate enthusiasts to monitor and support in the future.
Year Completed |
1959 |
Dam Length |
620 |
River Or Stream |
LANGS RUN |
Primary Dam Type |
Gravity |
Surface Area |
139.3 |
Hydraulic Height |
26 |
Drainage Area |
39 |
Nid Storage |
1691.6 |
Structural Height |
31 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
31 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Crosby Tank Detention Dam