Olsen Lake Dam Reservoir Report
Last Updated: April 3, 2026
Olsen Lake Dam, located in Bosque, Texas, was completed in 1960 and stands at a height of 34 feet.
Summary
This Earth dam, primarily used for recreation and water supply purposes, has a storage capacity of 262 acre-feet. Situated off the North Bosque River, the dam does not have a spillway and is classified with a high risk assessment. Despite its risk potential, the dam is not currently regulated by the state and has not been rated for its condition.
Owned privately, Olsen Lake Dam serves as a recreational destination for visitors interested in water activities. With a structural length of 650 feet, the dam's design features a buttress core and an unknown foundation type. In the event of an emergency, there is a single outlet gate available for water release. While the dam has not been inspected or assessed for its condition recently, its risk management measures are not specified in the available data.
Enthusiasts of water resources and climate may find Olsen Lake Dam an intriguing subject for further investigation due to its historical significance, risk assessment, and the potential impact it may have on the surrounding area in the event of a failure. The dam's location and storage capacity make it an essential structure for water supply in the region, emphasizing the importance of monitoring and maintaining its safety for both recreational and practical purposes.
°F
°F
mph
Wind
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Humidity
15-Day Weather Outlook
Year Completed |
1960 |
Dam Length |
650 |
Dam Height |
34 |
River Or Stream |
OFF CH-NORTH BOSQUE RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
34 |
Nid Storage |
262 |
Structural Height |
34 |
Outlet Gates |
None - 1 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
34 |
Seasonal Comparison
5-Day Hourly Forecast Detail
Nearby Streamflow Levels
N Bosque Rv Nr Clifton
|
15cfs |
N Bosque Rv At Valley Mills
|
10cfs |
Brazos Rv Nr Aquilla
|
1130cfs |
Hog Ck Nr Crawford
|
0cfs |
Middle Bosque Rv Nr Mcgregor
|
8cfs |
Aquilla Ck Abv Aquilla
|
0cfs |
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.
Olsen Lake Dam