Lake Manr Dam Reservoir Report
Nearby: J A Morris Dam Morris Lake Dam
Last Updated: December 5, 2025
Lake Manr Dam in Rusk, Texas, is a privately owned structure built in 1949 for recreational purposes.
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Summary
The dam, standing at 38 feet tall and stretching 720 feet in length, harnesses the waters of Walker Branch to create a reservoir with a storage capacity of 1053 acre-feet. The dam's spillway, with a width of 250 feet, allows for the controlled release of excess water to prevent flooding in the surrounding area.
Managed by the Texas Commission on Environmental Quality (TCEQ), Lake Manr Dam underwent significant modifications in 2007 to enhance its hydraulic, mechanical, and structural components. Despite its age, the dam's condition is currently not rated, with a moderate risk assessment level of 3. The dam has not been classified with a hazard potential, indicating its stable and secure state. Regular inspections and maintenance ensure the safety and functionality of this vital water resource for both recreation and local water management needs.
Lake Manr Dam serves as a vital water resource for the region, providing recreational opportunities and water storage for the community. Its strategic location and efficient design make it an essential component of the local water infrastructure, contributing to the overall water management system in Rusk, Texas. As climate change continues to impact water resources, the maintenance and upkeep of structures like Lake Manr Dam are crucial for ensuring water security and resilience in the face of changing environmental conditions.
Years Modified |
2007 - Hydraulic, 2007 - Mechanical, 2007 - Structural |
Year Completed |
1949 |
Dam Length |
720 |
Dam Height |
38 |
River Or Stream |
WALKER BRANCH |
Primary Dam Type |
Earth |
Surface Area |
39.7 |
Hydraulic Height |
38 |
Drainage Area |
1.24 |
Nid Storage |
1053 |
Structural Height |
38 |
Outlet Gates |
Other Controlled - 1, Uncontrolled - 1 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
38 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
E Fk Angelina Rv Nr Cushing
|
40cfs |
Sabine Rv Bl Longview
|
656cfs |
Rabbit Ck At Kilgore
|
40cfs |
Mud Ck Nr Jacksonville
|
123cfs |
Sabine Rv Abv Longview
|
498cfs |
Sabine Rv Nr Beckville
|
946cfs |
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.
Lake Manr Dam