Pollywog Lake Reservoir Report
Nearby: Roundy Pacer Lake
Last Updated: December 5, 2025
Pollywog Lake, nestled in the scenic Garfield County of Utah, is a private water resource managed by the Utah Division of Water Rights.
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Summary
Built in 1947 for irrigation purposes, this earth dam stands at 13 feet high and spans 505 feet in length, with a storage capacity of 800 acre-feet. Located in Antimony, Pollywog Lake is a vital part of the local water infrastructure, regulating water flow from Antelope Spring for offstream use.
Despite its low hazard potential, Pollywog Lake undergoes regular inspections and enforcement by state agencies to ensure its structural integrity and operational efficiency. The last inspection in 2005 revealed no significant concerns, earning the dam a "Not Rated" condition assessment. With a designated emergency action plan and a five-year inspection frequency, Pollywog Lake stands as a reliable water source for irrigation in the region, contributing to sustainable water management practices in the area. For water resource and climate enthusiasts, Pollywog Lake serves as a fascinating example of how private dams play a crucial role in local water systems and agriculture.
Year Completed |
1947 |
Dam Length |
505 |
River Or Stream |
ANTELOPE SPRING--OFFSTREAM |
Primary Dam Type |
Earth |
Hydraulic Height |
10 |
Drainage Area |
1.2 |
Nid Storage |
800 |
Structural Height |
13 |
Hazard Potential |
Low |
Nid Height |
13 |
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.
Pollywog Lake