Christina Reservoir Report

Last Updated: December 5, 2025

Christina, also known as Christina Lake, is a privately owned dam located in Fremont, Wyoming, specifically in the city of Lander.


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Summary

Built in 1942 by designer C.J. Francis, this earth dam stands at a height of 20 feet and serves primarily for irrigation purposes, with a storage capacity of 5350 acre-feet. The dam is situated on the Little Popo Agie River, with a drainage area of 5.2 square miles and a maximum discharge of 10700 cubic feet per second.

With a spillway width of 50 feet and an uncontrolled spillway type, Christina presents a significant hazard potential, leading to a moderate risk assessment rating. The dam's structural height reaches 22 feet and spans a length of 505 feet, holding a surface area of 350 acres. Despite being privately owned, the state of Wyoming regulates and inspects Christina, ensuring that it meets safety standards and enforcement measures. The last inspection was conducted in July 2021, with a regular inspection frequency of 5 years to monitor its condition and potential risks. For water resource and climate enthusiasts, Christina serves as a vital infrastructure for irrigation in the region, showcasing the intersection of human engineering with environmental sustainability.

Year Completed

1942

Dam Length

505

Dam Height

20

River Or Stream

LITTLE POPO AGIE RIVER

Primary Dam Type

Earth

Surface Area

350

Hydraulic Height

15

Drainage Area

5.2

Nid Storage

5350

Structural Height

22

Outlet Gates

Other Controlled - 1

Hazard Potential

Significant

Foundations

Soil

Nid Height

22
       
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.