Dry Creek Dike Reservoir Report

Last Updated: December 17, 2025

Dry Creek Dike, also known as Dry Creek Saddle Dam, is a privately owned structure located in New Plymouth, Idaho.


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Summary

Completed in 1976, this earth dam stands at a height of 34 feet and has a hydraulic height of 29 feet. The dam's primary purpose is for irrigation, with a storage capacity of 1,484 acre-feet and a surface area of 160 acres. It is situated on an unnamed stream in Dry Creek, within the Payette County of Idaho.

Despite being privately owned, Dry Creek Dike falls under state regulation, with the Idaho Department of Water Resources overseeing its permitting, inspection, and enforcement. The dam is classified as having a significant hazard potential and fair condition assessment. It has a spillway width of 300 feet and is designed as an uncontrolled spillway type. The risk assessment for the dam is moderate, with a DSAC (Dam Safety Action Classification) of 3.

Overall, Dry Creek Dike serves as a crucial water resource infrastructure for irrigation purposes in the region. Its strategic location and design play a vital role in managing water flow and storage in Dry Creek, contributing to the agricultural landscape of the area. With its state-regulated status and ongoing risk assessment, the dam remains a key element in water resource management and climate resilience efforts in Idaho.

Year Completed

1976

Dam Length

800

Dam Height

34

River Or Stream

UNNAMED STREAM DRY CREEK

Surface Area

160

Hydraulic Height

29

Drainage Area

2.58

Nid Storage

1484

Outlet Gates

None

Hazard Potential

Significant

Foundations

Rock, Soil

Nid Height

34
       
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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.