Schnoor Reservoir Report

Last Updated: December 23, 2025

Schnoor, a privately owned irrigation dam located in Natrona, Wyoming, was completed in 1910 on the Camp or Stinking Creek.


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Summary

With a primary purpose of irrigation, Schnoor stands at a height of 19 feet and has a structural height of 20 feet. The earth dam, supported by stone core and soil foundation, has a length of 1275 feet and a storage capacity of 237 acre-feet.

Despite its low hazard potential, Schnoor has been assessed to be in poor condition as of June 2019, with a moderate risk rating. The dam features an uncontrolled spillway with a width of 200 feet and two valve outlet gates. While the dam has not been modified in recent years, it undergoes inspection every five years to ensure compliance with state regulatory requirements. The dam's emergency action plan and risk management measures are currently undetermined.

Enthusiasts of water resources and climate in the Casper area may find Schnoor's historical significance and operational challenges intriguing. As a vital component of the local irrigation system, understanding the condition and risk profile of Schnoor is crucial for ensuring the safety and sustainability of water resources in the region. Further research and monitoring efforts may be necessary to address the poor condition assessment and moderate risk level associated with this important irrigation infrastructure.

Year Completed

1910

Dam Length

1275

Dam Height

19

River Or Stream

CAMP OR STINKING CREEK

Primary Dam Type

Earth

Surface Area

44

Hydraulic Height

15

Nid Storage

237

Structural Height

20

Outlet Gates

Valve - 2

Hazard Potential

Low

Foundations

Soil

Nid Height

20
       
Seasonal Comparison

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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.