Koy Dam Reservoir Report
Nearby: Peters Lake Dam Schenck Lake Dam
Last Updated: December 6, 2025
Koy Dam, located in Rosenberg, Texas, is a private earth dam designed by USDA NRCS for the primary purpose of serving as a Fish and Wildlife Pond.
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Summary
Completed in 1979, this dam stands at a height of 23 feet and has a length of 751 feet, providing a storage capacity of 124 acre-feet. The dam is regulated and inspected by the Texas Commission on Environmental Quality (TCEQ) to ensure its safety and compliance with state regulations.
Despite its relatively small size, Koy Dam plays a crucial role in providing fire protection, stock, and recreational opportunities in the area. It is situated on TR-Bullinger Creek and is part of the Austin, Texas watershed, covering a drainage area of 0.34 square miles. Although the dam currently does not have a spillway, it is equipped with outlet gates to manage water levels. The risk assessment for this dam is classified as high (2), emphasizing the importance of regular inspections and maintenance to prevent any potential hazards.
Overall, Koy Dam serves as a vital water resource and habitat for wildlife in the region, highlighting the intersection of water conservation and environmental stewardship. As climate change continues to impact water availability and quality, dams like Koy Dam play a crucial role in managing water resources and supporting ecosystems. It is essential for stakeholders and enthusiasts to stay informed and engaged in the preservation and sustainable management of dams like Koy Dam to ensure a resilient and healthy water future for all.
Year Completed |
1979 |
Dam Length |
751 |
Dam Height |
23 |
River Or Stream |
TR-BULLINGER CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
23 |
Drainage Area |
0.34 |
Nid Storage |
124 |
Structural Height |
24 |
Outlet Gates |
None - 1 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
24 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Brazos Rv At San Felipe
|
2310cfs |
Mill Ck Nr Bellville
|
8cfs |
Buffalo Bayou Nr Katy
|
95cfs |
Cypress Ck At Katy-Hockley Rd Nr Hockley
|
24cfs |
Brazos Rv Nr Hempstead
|
1800cfs |
Redgate Ck Nr Columbus
|
1cfs |
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.
Koy Dam