Heck Dam Reservoir Report
Last Updated: December 14, 2025
Heck Dam, located in Holt, Missouri, serves multiple purposes including grade stabilization, fire protection, stock, and small fish pond management.
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Summary
Completed in 1989, this earth dam stands at a height of 31 feet with a length spanning 580 feet. The dam has a maximum storage capacity of 42 acre-feet and a normal storage of 15 acre-feet, serving a drainage area of 32 square miles.
Despite being categorized as having a low hazard potential, the dam's risk assessment is rated as moderate (3). With an uncontrolled spillway and no outlet gates, Heck Dam poses moderate risks that necessitate effective risk management measures. This dam on the TR-Middle Branch Squaw Creek is privately owned and not regulated by the state, emphasizing the importance of proactive maintenance and emergency preparedness to ensure the safety and integrity of the structure for the surrounding community and ecosystem.
Year Completed |
1989 |
Dam Length |
580 |
Dam Height |
31 |
River Or Stream |
TR-MIDDLE BRANCH SQUAW CK |
Primary Dam Type |
Earth |
Surface Area |
4 |
Hydraulic Height |
31 |
Drainage Area |
32 |
Nid Storage |
42 |
Structural Height |
31 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
31 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Nodaway River Near Graham
|
101cfs |
Tarkio River At Fairfax Mo
|
63cfs |
Nodaway River Near Burlington Jct
|
127cfs |
Missouri River At Rulo
|
26000cfs |
One Hundred And Two River At Maryville
|
16cfs |
Big Nemaha River At Falls City
|
310cfs |
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.
Heck Dam