Brown's Dam #4 Reservoir Report
Nearby: Brown's Dam #3 Brown's Dam #2
Last Updated: December 22, 2025
Brown's Dam #4, located in Rock Port, Missouri, is a privately owned earth dam that was completed in 2004.
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Summary
Standing at a height of 45.4 feet and stretching 400 feet in length, the dam has a storage capacity of 54 acre-feet and serves a drainage area of 55 square miles. Despite being classified as having a low hazard potential, the dam is regulated and inspected by the Dam and Reservoir Safety Program of Missouri to ensure its safety and compliance with state regulations.
With a normal storage capacity of 45 acre-feet and a surface area of 3 acres, Brown's Dam #4 plays a crucial role in managing water resources in the Atchison County region. The dam is designed as a buttress-type structure with an unlisted/unknown foundation, showcasing a blend of modern engineering and traditional construction methods. Although not currently rated for its condition, the dam has been inspected periodically, with the last assessment conducted in November 2011.
Operated by private owners, Brown's Dam #4 serves as a key water management infrastructure in the area, providing flood control and water storage capabilities. Its strategic location and design ensure that it effectively fulfills its purpose while adhering to state regulatory standards. For water resource and climate enthusiasts, Brown's Dam #4 represents a fascinating example of how human engineering can harmonize with nature to sustainably manage water resources and mitigate potential risks.
Year Completed |
2004 |
Dam Length |
400 |
Dam Height |
45.4 |
Surface Area |
3 |
Drainage Area |
55 |
Nid Storage |
54 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
45 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Tarkio River At Fairfax Mo
|
62cfs |
Little Nemaha River At Auburn
|
82cfs |
Nishnabotna River Above Hamburg
|
688cfs |
Nodaway River Near Burlington Jct
|
179cfs |
Missouri River At Nebraska City
|
21400cfs |
Missouri River At Rulo
|
24800cfs |
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.
Brown's Dam #4
165 Street Atchison County