Durgens Creek Watershed Dam 7 Reservoir Report
Last Updated: December 19, 2025
Durgens Creek Watershed Dam 7, also known as Scott Shaffer Dam, is a vital structure owned by the local government in Hannibal, Missouri.
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Summary
Built in 1969 by USDA NRCS, this earth dam stands at a height of 29 feet, with a structural height of 31 feet and a length of 515 feet. Its primary purpose is flood risk reduction, with a normal storage capacity of 88 acre-feet and a maximum storage of 625 acre-feet. The dam sits on Durgens Creek, covering a drainage area of 38.4 square miles and has a maximum discharge capacity of 3100 cubic feet per second.
Despite being classified as having a low hazard potential, Durgens Creek Watershed Dam 7 plays a crucial role in mitigating flooding risks in the area. The dam has an uncontrolled spillway with a width of 110 feet and is primarily constructed with stone core and soil foundation. Located in Lewis County, Missouri, this dam has not been rated for its condition assessment, but its risk assessment is moderate. While it has not been inspected recently, the dam remains a key asset in managing water resources and climate challenges within the region.
Overall, Durgens Creek Watershed Dam 7 is a significant infrastructure designed to protect the local community from potential flooding events. With a rich history dating back to its construction in 1969, this dam continues to serve its primary purpose of flood risk reduction. Despite its low hazard potential, the dam's moderate risk assessment underscores the importance of ongoing monitoring and maintenance to ensure its effectiveness in safeguarding the surrounding area from water-related threats.
Year Completed |
1969 |
Dam Length |
515 |
Dam Height |
29 |
River Or Stream |
TR-DURGENS CREEK |
Primary Dam Type |
Earth |
Surface Area |
2 |
Hydraulic Height |
29 |
Drainage Area |
38.4 |
Nid Storage |
625 |
Structural Height |
31 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
31 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Wyaconda River Above Canton
|
13cfs |
South Fabius River Near Taylor
|
12cfs |
Bear Creek Near Marcelline
|
5cfs |
North River At Palmyra
|
15cfs |
Fox River At Wayland
|
8cfs |
Bear Creek At Hannibal
|
2cfs |
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.
Area Campgrounds
| Location | Reservations | Toilets |
|---|---|---|
Wakonda State Park
|
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Bear Creek - Mississippi River
|
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Mississippi Riverfront RV Park
|
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Canton City River Park
|
Durgens Creek Watershed Dam 7