North Poudre # 4

North Poudre # 4 is an earth dam located in Larimer County, Colorado, built in 1956. It carries a Significant hazard potential classification and has a satisfactory condition assessment.

About North Poudre # 4

The primary purpose of North Poudre # 4 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by North Poudre Irr. Co. (moen, Tad) (private). It impounds the Boxelder Creek-tr near Wellington.

The dam stands 24 feet tall and stretches 1,400 feet across, creates a reservoir covering 119 acres, and has a maximum storage capacity of 2,264 acre-feet. Completed in 1956, the structure is well into its service life at over 50 years old.

This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 08/26/2022.

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Significant HazardSatisfactory ConditionEmergency Action Plan: Yes

Location

StateColorado
CountyLarimer
Nearest CityWellington
River/StreamBoxelder Creek-tr
Coordinates40.71567, -105.02989

Physical Characteristics

Dam TypeEarth
NID Height24 ft
Dam Height24 ft
Dam Length1,400 ft
Year Completed1956 (70 years old)

Storage & Hydraulics

NID Storage2,264 acre-ft
Max Storage2,264 acre-ft
Normal Storage1,669 acre-ft
Surface Area119 acres
Max Discharge1,600 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeIrrigation
OwnerNORTH POUDRE IRR. CO. (MOEN, TAD)
Owner TypePrivate
Hazard ClassificationSignificant
Condition AssessmentSatisfactory
Last Inspection08/26/2022
Emergency Action PlanYes

Identifiers

NID IDCO00839
Federal IDCO00839
More InfoState Dam Safety Program

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