Twin Arrow No 2 Dam Reservoir Report
Last Updated: February 9, 2026
Twin Arrow No 2 Dam, located in Collin, Texas, is a privately owned structure designed by the USDA NRCS and regulated by the Texas Commission on Environmental Quality (TCEQ).
Summary
Completed in 1973, this Earth dam stands at a height of 32 feet with a length of 467 feet, providing a storage capacity of 34 acre-feet. The dam is situated on the TR-Stover Creek and serves a primary purpose that falls under "Other" category.
Despite the lack of a spillway, the dam's hazard potential is not available, and its condition assessment remains unrated. The risk assessment has labeled it as high, emphasizing the importance of proper risk management measures. With a single outlet gate and no associated structures, Twin Arrow No 2 Dam plays a crucial role in water resource management in the region. For water resource and climate enthusiasts, this dam offers an intriguing case study in dam infrastructure and hazard mitigation.
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15-Day Weather Outlook
Year Completed |
1973 |
Dam Length |
467 |
Dam Height |
32 |
River Or Stream |
TR-STOVER CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
32 |
Nid Storage |
34 |
Structural Height |
32 |
Outlet Gates |
None - 1 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
32 |
Seasonal Comparison
5-Day Hourly Forecast Detail
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.
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Twin Arrow No 2 Dam