Upper Pine Lake Dredge Spoil Dam Reservoir Report
Last Updated: December 13, 2025
Upper Pine Lake Dredge Spoil Dam, located in Eldora, Iowa, is a state-regulated earth dam with a height of 35 feet and a length of 1469 feet.
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Summary
Completed in 1998, the dam serves a primary purpose of "Other" and has a storage capacity of 133 acre-feet. Situated on the TR-Iowa River, the dam is owned by the state and falls under the jurisdiction of the Iowa Department of Natural Resources.
With a low hazard potential and a moderate risk assessment rating, the Upper Pine Lake Dredge Spoil Dam plays a crucial role in managing water resources in Hardin County, Iowa. While the dam's condition assessment is currently marked as "Not Rated," it undergoes regular state inspections, permitting, and enforcement to ensure its structural integrity and safety. The dam features an uncontrolled spillway type and is designed to withstand potential flooding events.
For water resource and climate enthusiasts, the Upper Pine Lake Dredge Spoil Dam is a notable structure that contributes to the overall water management efforts in the region. With its strategic location and design, the dam plays a vital role in regulating water flow along the TR-Iowa River and mitigating flood risks for the surrounding communities. As a state-owned and state-regulated asset, the dam underscores the importance of proactive monitoring and maintenance to safeguard water resources and infrastructure in the area.
Year Completed |
1998 |
Dam Length |
1469 |
Dam Height |
35 |
River Or Stream |
TR- IOWA RIVER |
Primary Dam Type |
Earth |
Drainage Area |
0.02 |
Nid Storage |
133 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
35 |
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.
Upper Pine Lake Dredge Spoil Dam