Callahan Creek Watershed A-2 Reservoir Report
Last Updated: December 19, 2025
The Callahan Creek Watershed A-2 is a crucial infrastructure managed by the local government in Boone, Missouri, designed by the USDA NRCS.
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Summary
This earth dam, completed in 1975, serves the primary purpose of flood risk reduction for the area, with a height of 29 feet and a length of 620 feet. It has a storage capacity of 240 acre-feet and can handle a maximum discharge of 490 cubic feet per second.
Situated in the TR-CALLAHAN CREEK, this dam has a significant hazard potential and a moderate risk assessment. It is currently not rated for its condition assessment, with no inspection frequency specified. The spillway type is uncontrolled, with a width of 40 feet. Despite the lack of recent inspections and condition assessments, the Callahan Creek Watershed A-2 remains a critical structure for flood risk management in the region.
Water resource and climate enthusiasts will find interest in the Callahan Creek Watershed A-2 due to its vital role in flood risk reduction in the area. The dam's design and specifications, along with its strategic location in the watershed, make it an essential piece of infrastructure for managing water resources and mitigating potential risks associated with flooding events. With its construction dating back to 1975, this earth dam continues to play a crucial role in protecting the community and surrounding areas from the impacts of excessive water flow and potential disasters.
Year Completed |
1975 |
Dam Length |
620 |
Dam Height |
29 |
River Or Stream |
TR-CALLAHAN CREEK |
Primary Dam Type |
Earth |
Surface Area |
14 |
Hydraulic Height |
29 |
Drainage Area |
256 |
Nid Storage |
240 |
Structural Height |
29 |
Outlet Gates |
None |
Hazard Potential |
Significant |
Foundations |
Soil |
Nid Height |
29 |
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.
Callahan Creek Watershed A-2