Janet Shaw Dam Reservoir Report
Last Updated: December 7, 2025
Janet Shaw Dam, located in Monticello, Missouri, was completed in 2000 by the USDA NRCS.
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Summary
This private dam serves multiple purposes such as fire protection, stock, and small fish pond. It is an earth dam with a stone core and soil foundation, standing at a height of 26 feet with a hydraulic height of 25 feet. The dam has a length of 275 feet and a storage capacity of 21 acre-feet, providing essential water resources for the surrounding area.
Situated on TR-Bear Creek in Scotland County, Janet Shaw Dam is regulated by the state of Missouri and falls under the jurisdiction of the Rock Island District. Despite its low hazard potential, the dam has a moderate-risk assessment due to its location and design. With a maximum discharge of 92.3 cubic feet per second, the dam features an uncontrolled spillway and no outlet gates. The last inspection in November 2000 deemed the dam to be in adequate condition, although its emergency action plan and risk management measures are currently not assessed.
Water resource and climate enthusiasts will find Janet Shaw Dam to be an intriguing structure that not only supports local water needs but also provides habitat for small fish and wildlife. With its unique design and purpose, this earth dam showcases the importance of sustainable water management practices in ensuring the resilience of communities in the face of changing climate conditions. The dam's risk assessment highlights the need for continued monitoring and maintenance to safeguard its integrity and protect downstream areas from potential hazards.
Year Completed |
2000 |
Dam Length |
275 |
Dam Height |
26 |
River Or Stream |
TR-BEAR CREEK |
Primary Dam Type |
Earth |
Surface Area |
2 |
Hydraulic Height |
25 |
Drainage Area |
12.8 |
Nid Storage |
21 |
Structural Height |
31 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
31 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Fox River At Wayland
|
8cfs |
Des Moines River At St. Francisville
|
1620cfs |
Wyaconda River Above Canton
|
13cfs |
Des Moines River At Keosauqua
|
1800cfs |
Bear Creek Near Marcelline
|
5cfs |
South Fabius River Near Taylor
|
12cfs |
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.
Janet Shaw Dam