Lake Lamberjack Upground Reservoir Reservoir Report
Last Updated: December 19, 2025
Lake Lamberjack Upground Reservoir, also known as Fostoria Reservoir No.
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Summary
3, is a hidden gem nestled in Hancock County, Ohio. This local government-owned water supply reservoir was completed in 1919 and spans an impressive 20 acres with a storage capacity of 390 acre-feet. Situated just 0.1 miles from Fostoria, this earth dam structure stands at a height of 19 feet, serving as a crucial resource for the surrounding community.
Managed by the Ohio Department of Natural Resources, this reservoir plays a vital role in supplying water to the area while being regulated and inspected to ensure its safety and functionality. Despite its high hazard potential and poor condition assessment, efforts are being made to maintain and improve its infrastructure. The reservoir is a haven for water resource and climate enthusiasts, showcasing the intersection of engineering ingenuity and environmental stewardship in managing water resources in Ohio.
Lake Lamberjack Upground Reservoir serves as a testament to the importance of sustainable water management practices in safeguarding our natural resources for future generations. With its historical significance and scenic beauty, this reservoir is not just a water supply source but also a symbol of resilience and innovation in the face of changing climate conditions. As climate enthusiasts continue to monitor and appreciate the role of such structures in our ecosystem, Lake Lamberjack stands out as a valuable asset in Ohio's water infrastructure landscape.
Year Completed |
1919 |
Dam Length |
6990 |
Dam Height |
19 |
River Or Stream |
TRIBUTARY TO EAST BRANCH PORTAGE RIVER - OFFSTREAM |
Primary Dam Type |
Earth |
Surface Area |
20 |
Drainage Area |
0.04 |
Nid Storage |
390 |
Hazard Potential |
High |
Nid Height |
19 |
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.
Lake Lamberjack Upground Reservoir