Rockhold Dam Reservoir Report
Nearby: John Mankopf Dam Gary Anson Dam
Last Updated: December 6, 2025
Rockhold Dam, located in LaGrange, Missouri, along the TR-North Wyaconda River, is a privately owned structure primarily used for fire protection, stock, and as a small fish pond.
°F
°F
mph
Wind
%
Humidity
Summary
Completed in 1994, this earth dam stands at a height of 26.5 feet, with a hydraulic height of 23 feet and a structural height of 35 feet. With a storage capacity of 80 acre-feet, it serves to store water for various purposes while covering a surface area of 2 acres.
Despite being classified as having a low hazard potential, Rockhold Dam is considered to have a moderate risk level, with a condition assessment of 'Not Rated'. While it does not have any outlet gates or associated structures, the dam features an uncontrolled spillway with a width of 14 feet. The surrounding area covers a drainage area of 19.2 square miles, with a maximum discharge capacity of 101 cubic feet per second.
For water resource and climate enthusiasts, Rockhold Dam offers a glimpse into the intricate infrastructure designed to manage water resources efficiently. Its strategic location and purpose highlight the importance of small-scale dams in safeguarding against potential risks and supporting local ecosystems. As a key element in the region's water management system, Rockhold Dam stands as a testament to the ongoing efforts to balance water needs for various uses while mitigating potential hazards.
Year Completed |
1994 |
Dam Length |
463 |
Dam Height |
26.5 |
River Or Stream |
TR-NORTH WYACONDA |
Primary Dam Type |
Earth |
Surface Area |
2 |
Hydraulic Height |
23 |
Drainage Area |
19.2 |
Nid Storage |
80 |
Structural Height |
35 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
35 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Des Moines River At Keosauqua
|
1800cfs |
Fox River At Bloomfield
|
7cfs |
Fox River At Wayland
|
8cfs |
Des Moines River At St. Francisville
|
1620cfs |
Chariton River At Livonia
|
45cfs |
Cedar Creek Near Oakland Mills
|
10cfs |
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.
Rockhold Dam