Annin Lake Dam Reservoir Report
Nearby: Jud Cramer West Dam Jud Cramer Dam
Last Updated: December 5, 2025
Located in Jack, Texas, Annin Lake Dam is a private-owned structure built in 1961 with a primary purpose of serving as an earth dam on Beans Creek.
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Summary
Standing at 25 feet tall and spanning a length of 575 feet, this dam boasts a storage capacity of 223 acre-feet, making it a crucial component of water resource management in the area. Despite its high hazard potential, the dam's condition assessment remains unrated, highlighting the need for regular inspections and maintenance to ensure its continued safety and functionality.
Operated by the Fort Worth District of the US Army Corps of Engineers, Annin Lake Dam is an integral part of the local water infrastructure, providing essential water storage and flood control benefits to the surrounding community. With a maximum storage capacity of 223 acre-feet and a normal storage level of 73 acre-feet, the dam plays a significant role in managing water resources in the region. Despite lacking a spillway, the dam is equipped with one outlet gate to regulate water flow and maintain optimal storage levels.
While Annin Lake Dam's risk assessment is classified as high, with a hazard potential of 2 out of 3, the structure remains a vital asset for water management in the area. Although specific information on inspections and maintenance is not available, the dam's importance in providing water storage and flood control underscores the need for ongoing monitoring and upkeep to ensure its continued functionality and safety for both water resource and climate enthusiasts in the region.
Year Completed |
1961 |
Dam Length |
575 |
Dam Height |
25 |
River Or Stream |
BEANS CREEK |
Primary Dam Type |
Earth |
Surface Area |
9 |
Hydraulic Height |
25 |
Nid Storage |
223 |
Structural Height |
25 |
Outlet Gates |
None - 1 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
25 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
W Fk Trinity Rv Nr Jacksboro
|
1cfs |
Big Sandy Ck Nr Bridgeport
|
8cfs |
Brazos Rv Nr Palo Pinto
|
55cfs |
W Fk Trinity Rv Nr Boyd
|
5cfs |
Walnut Ck At Reno
|
1cfs |
Brazos Rv Nr Graford
|
50cfs |
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.
Annin Lake Dam
Lost Ck Res Nr Jacksboro