Martin Seepage #2 Reservoir Report

Last Updated: December 5, 2025

Martin Seepage #2, located in Larimer, Colorado, is a privately owned Earth dam primarily built for irrigation purposes.


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Summary

Completed in 1968, this structure stands at 22 feet tall with a length of 795 feet, providing a storage capacity of 112 acre-feet. With a low hazard potential and satisfactory condition assessment, the dam has a moderate risk level, as per the data updated on Wed, 24 Mar 2021.

Situated along Dry Creek-TR in Ft. Collins, this dam serves as a crucial resource for fish and wildlife and supports the local irrigation needs. Managed by the state regulatory agency DWR, Martin Seepage #2 is subject to regular inspections and enforcement measures to ensure its safety and functionality. Despite its age, the dam has shown resilience and continues to provide essential services to the community.

With a controlled spillway width of 35 feet and a maximum discharge capacity of 800 cubic feet per second, Martin Seepage #2 is equipped to handle excess water during heavy rainfall events. Even though it has not been modified in recent years, the dam remains a vital component of the local water resource infrastructure, contributing to the sustainable management of water resources in the region.

Year Completed

1968

Dam Length

795

Dam Height

18

River Or Stream

DRY CREEK-TR

Primary Dam Type

Earth

Surface Area

12

Hydraulic Height

19

Drainage Area

5

Nid Storage

112

Structural Height

22

Hazard Potential

Low

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.