Foland Reservoir Report

Last Updated: December 13, 2025

Foland, also known as Forster Reservoir, is a private water resource located in Owyhee, Idaho.


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Summary

Built in 1916, this Earth dam stands at a height of 10.6 feet and has a normal storage capacity of 135 acre-feet. The reservoir is fed by Cherry Creek and Dougherty Creek, with a drainage area of 0.4 square miles.

The dam's spillway type is uncontrolled with a width of 55 feet, and it is equipped with a slide (sluice gate) outlet gate. Despite its age, Foland has been assessed to be in fair condition with a low hazard potential. The last inspection in August 2017 revealed a moderate risk level, prompting a regular inspection frequency of every 5 years to ensure its structural integrity and safety.

Managed by the Idaho Department of Water Resources, Foland serves a primary purpose of other and is a significant water resource for the region. With its historical significance and ongoing regulatory oversight, Foland remains a vital asset in water management and climate resilience efforts in the area.

Year Completed

1916

Dam Length

1400

Dam Height

10.6

River Or Stream

CHERRY CREEK DOUGHERTY CREEK

Surface Area

43

Hydraulic Height

8.5

Drainage Area

0.4

Nid Storage

135

Outlet Gates

Slide (sluice gate)

Hazard Potential

Low

Foundations

Rock, Soil

Nid Height

11
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.