Summary
Built in 1999 by the NRCS, this Earth-type dam stands at 27 feet high and spans 367 feet in length, serving primarily for debris control. Funded, designed, and operated by the US Army, it has a storage capacity of 79 acre-feet, with a normal storage level of 38 acre-feet. The dam features an uncontrolled spillway with a width of 30 feet and a maximum discharge capacity of 596 cubic feet per second.
Despite its low hazard potential and moderate risk assessment, Dam 20 has not undergone a recent condition assessment, with the last inspection conducted in September 2020. The dam does not fall under state regulation or permitting, as it is owned and managed by the federal government. With a lack of detailed data on its current condition and emergency action plans, there is a need for increased monitoring and maintenance to ensure the safety and functionality of this critical infrastructure. For water resource and climate enthusiasts, Dam 20 presents an intriguing case study of a federally-owned dam with unique design features and operational considerations in the state of Texas.
Year Completed |
1999 |
Dam Length |
367 |
Dam Height |
27 |
River Or Stream |
Coryell |
Primary Dam Type |
Earth |
Surface Area |
4 |
Nid Storage |
79 |
Hazard Potential |
Low |
Foundations |
Rock, Soil |
Nid Height |
27 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Cowhouse Ck At Pidcoke
|
13cfs |
Lampasas Rv Nr Kempner
|
33cfs |
Leon Rv At Gatesville
|
25cfs |
Lampasas Rv At Ding Dong
|
41cfs |
Nolan Ck At S Penelope
|
38cfs |
Lampasas Rv Nr Belton
|
10cfs |
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.
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