West Fork Big Creek Dam B- 66 Reservoir Report
Last Updated: December 12, 2025
West Fork Big Creek Dam B-66, also known as Site B-66, is located in Harrison, Missouri, and is owned by the local government.
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Summary
Built in 2005 by the USDA NRCS, this earth dam stands at a height of 28 feet and serves the primary purpose of flood risk reduction along the West Fork Big Creek. With a storage capacity of 126.7 acre-feet and a drainage area of 220 square miles, the dam plays a crucial role in managing water flow and protecting the surrounding area from potential flooding events.
Despite being classified as having a low hazard potential, West Fork Big Creek Dam B-66 is considered to have a moderate risk level. The dam features an uncontrolled spillway with a width of 40 feet and has not been rated for its condition assessment. While it currently does not have outlet gates or associated structures, the dam's design and construction by the Natural Resources Conservation Service reflect a commitment to effective flood risk reduction measures. Although the dam has not been regularly inspected, its strategic location and purpose highlight its importance in safeguarding the community from potential water-related hazards.
Overall, West Fork Big Creek Dam B-66 serves as a critical infrastructure for flood risk reduction in the region, with a focus on protecting the surrounding area from potential inundation. While its risk level is considered moderate, the dam's design and purpose demonstrate a proactive approach to water resource management and climate resilience. As a key component of the local government's water infrastructure, West Fork Big Creek Dam B-66 plays a vital role in ensuring the safety and well-being of the community in Harrison, Missouri.
Year Completed |
2005 |
Dam Length |
550 |
Dam Height |
28 |
River Or Stream |
WEST FORK BIG CREEK |
Primary Dam Type |
Earth |
Surface Area |
14 |
Hydraulic Height |
28 |
Drainage Area |
220 |
Nid Storage |
126.7 |
Structural Height |
31 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
31 |
Seasonal Comparison
Weather Forecast
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.
West Fork Big Creek Dam B- 66