Lower Pine Lake Dam Reservoir Report
Last Updated: December 13, 2025
Lower Pine Lake Dam, also known as Cheever Lake Dam, is a Federal-owned structure located in Spokane, Washington, along Rock Creek.
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Summary
Completed in 1940, this Earth dam stands at a height of 14 feet and has a maximum storage capacity of 656 acre-feet. Its primary purpose is to serve as a Fish and Wildlife Pond, with a normal storage capacity of 152 acre-feet and a surface area of 50 acres.
The dam has undergone several modifications over the years, with significant upgrades in 1978, 1985, and 2012 to enhance its foundation, hydraulic, and structural components. It features other controlled outlet gates and a spillway width of 136 feet. Despite being classified as having a low hazard potential, the dam is inspected every five years, with the last assessment conducted in October 2013, resulting in a satisfactory condition assessment.
Managed by the Fish and Wildlife Service, Lower Pine Lake Dam plays a crucial role in supporting aquatic habitat and conservation efforts in the region. Its maintenance and regulatory oversight are also handled by the same agency, ensuring the safety and operational efficiency of this essential water resource infrastructure.
Years Modified |
1978 - Foundation, 1978 - Hydraulic, 1978 - Structural, 1985 - Hydraulic, 1985 - Structural, 2012 - Hydraulic, 2012 - Structural |
Year Completed |
1940 |
Dam Length |
670 |
Dam Height |
14 |
River Or Stream |
ROCK CREEK |
Primary Dam Type |
Earth |
Surface Area |
50 |
Hydraulic Height |
12 |
Drainage Area |
34.4 |
Nid Storage |
656 |
Structural Height |
18 |
Outlet Gates |
Other Controlled |
Hazard Potential |
Low |
Foundations |
Rock, Soil |
Nid Height |
18 |
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.
Lower Pine Lake Dam