Coon Dam 2 Reservoir Report
Nearby: Coon Dam 1 Taylor Lake Dam
Last Updated: December 21, 2025
Coon Dam 2, located in Houston, Texas, is a privately owned earth dam completed in 1970 for the primary purpose of water supply.
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Summary
Standing at a height of 15 feet and a length of 500 feet, the dam has a storage capacity of 120 acre-feet, with a normal storage level of 75 acre-feet. Situated on the Trinity River and falling under the jurisdiction of the Galveston District of the US Army Corps of Engineers, Coon Dam 2 plays a crucial role in ensuring water availability in the region.
Despite its relatively small size, Coon Dam 2 carries a high risk assessment rating of 2, indicating the potential for significant hazards in the event of a failure. The dam is not currently rated for its condition, with no recent inspection data available. With no spillway and limited emergency preparedness measures in place, there is a need for increased monitoring and risk management strategies to mitigate the potential risks associated with the dam. Climate and water resource enthusiasts will find Coon Dam 2 to be a fascinating case study in the challenges and importance of maintaining infrastructure for water supply in the face of changing environmental conditions.
Year Completed |
1970 |
Dam Length |
500 |
Dam Height |
15 |
River Or Stream |
TR-TRINITY RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
15 |
Nid Storage |
120 |
Structural Height |
15 |
Outlet Gates |
None - 1 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
15 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Trinity Rv Nr Crockett
|
1610cfs |
Bedias Ck Nr Madisonville
|
2cfs |
Upper Keechi Ck Nr Oakwood
|
16cfs |
Trinity Rv Nr Oakwood
|
1170cfs |
Navasota Rv At Old Spanish Rd Nr Bryan
|
42cfs |
Navasota Rv Nr Easterly
|
17cfs |
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.
Coon Dam 2