Hiser Dam No 1 Reservoir Report
Nearby: Robert Moll Dam Klatt Lake Dam
Last Updated: December 18, 2025
Hiser Dam No 1, located in Millville, Missouri, was completed in 1992 and serves as a crucial resource for fish and wildlife pond management.
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Summary
The earth dam stands at a height of 33 feet and has a storage capacity of 110 acre-feet, with a normal storage level of 71 acre-feet. With a surface area of 4 acres and a drainage area of 32 square miles, the dam plays a significant role in grade stabilization and recreation in the area.
Managed by a private owner, Hiser Dam No 1 has a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment. Despite being unregulated by the state, the dam's spillway type is uncontrolled with a width of 16 feet, allowing for a maximum discharge of 256 cubic feet per second. While the dam has not been inspected in recent years, its risk assessment is moderate, highlighting the importance of proper management and maintenance to ensure the safety and functionality of the structure.
As part of the Rock Island District's portfolio, Hiser Dam No 1 is a notable feature along the TR-East Fork Crooked River. With its primary purpose of supporting fish and wildlife habitats, the dam contributes to the ecological diversity of the region. While the dam does not have an Emergency Action Plan (EAP) in place, its risk management measures are under review, emphasizing the need for proactive measures to address potential hazards and ensure the long-term sustainability of the dam and surrounding areas.
Year Completed |
1992 |
Dam Length |
480 |
Dam Height |
33 |
River Or Stream |
TR-EAST FORK CROOKED RIV |
Primary Dam Type |
Earth |
Surface Area |
4 |
Hydraulic Height |
32 |
Drainage Area |
32 |
Nid Storage |
110 |
Structural Height |
34 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
34 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Crooked River Near Richmond
|
2cfs |
Shoal Creek Near Braymer Mo
|
0cfs |
Wakenda Creek At Carrollton
|
36cfs |
Missouri River At Waverly
|
29300cfs |
Little Platte River Near Plattsburg
|
0cfs |
Grand River At Chillicothe
|
361cfs |
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.
Hiser Dam No 1