H-1 Settling Area Reservoir Report
Nearby: Pol36 H-2 Settling Area
Last Updated: December 6, 2025
The H-1 Settling Area in Polk County, Florida, is a privately owned tailings dam situated along the Alafia River.
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Summary
Constructed in 1976, this earth dam stands at a height of 34 feet and has a length of 15,000 feet, with a storage capacity of 13,160 acre-feet. The dam serves the primary purpose of storing tailings, and is regulated, permitted, inspected, and enforced by the state of Florida.
With a significant hazard potential, the H-1 Settling Area has not been rated for its condition assessment. Despite the lack of recent inspection data, the dam remains under state jurisdiction and is subject to regulatory oversight. The surrounding area has a drainage area of 0 square feet and a surface area of 387 acres, making it crucial for water resource and climate enthusiasts to monitor the dam's condition and potential risks.
As a key structure along the Alafia River, the H-1 Settling Area poses a potential risk to the local community and environment in the event of a failure. With its significant hazard potential and lack of recent assessment data, it is essential for authorities and stakeholders to prioritize the inspection, maintenance, and potential risk mitigation measures for this dam to ensure the safety and sustainability of the surrounding area's water resources and climate resilience.
Year Completed |
1976 |
Dam Length |
15000 |
Dam Height |
34 |
River Or Stream |
ALAFIA RIVER |
Primary Dam Type |
Earth |
Surface Area |
387 |
Hydraulic Height |
34 |
Nid Storage |
13160 |
Structural Height |
29 |
Hazard Potential |
Significant |
Nid Height |
34 |
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.
H-1 Settling Area