Mammoth Springs Dam 1 Reservoir Report
Nearby: Mammoth Springs Dam 3 Wendt Lake Dam
Last Updated: December 30, 2025
Mammoth Springs Dam 1, also known as State Park Lake Dam, is a gravity dam located in Mammoth Springs, Arkansas, along the Spring River.
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Summary
Completed in 1885, this historic dam serves primarily for recreational purposes, offering a picturesque setting for outdoor enthusiasts to enjoy water activities. With a hydraulic height of 17 feet and a structural height of 20 feet, the dam has a storage capacity of 60 acre-feet, providing a serene escape for visitors to the area.
Situated in Fulton County, Arkansas, Mammoth Springs Dam 1 is owned and regulated by the state government, with no federal oversight. Despite its age, the dam has been assessed to have a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment. With a maximum discharge of 6,500 cubic feet per second, the dam ensures the safety and stability of the surrounding area while maintaining its recreational value. The dam has not been modified in recent years, reflecting its enduring capability to meet the needs of the local community.
As a significant landmark in the region, Mammoth Springs Dam 1 stands as a testament to the enduring engineering feats of the past. With its tranquil waters and scenic surroundings, the dam continues to attract visitors seeking a peaceful retreat amidst the natural beauty of the Spring River. While its primary purpose is recreational, the dam also serves as a vital part of the local ecosystem, providing essential water storage and management for the area.
Year Completed |
1885 |
Dam Length |
512 |
River Or Stream |
SPRING RIVER |
Primary Dam Type |
Gravity |
Hydraulic Height |
17 |
Nid Storage |
60 |
Structural Height |
20 |
Hazard Potential |
Low |
Nid Height |
20 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
Mammoth Springs Dam 1