Windsor

Windsor is an earth dam located in Denver County, Colorado, built in 1892. It carries a High hazard potential classification and has a unsatisfactory condition assessment.

About Windsor

The primary purpose of Windsor is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Fairmount Cemetery (zavilla, Andy) (private). It impounds the Westerly Creek-os near Denver.

The dam stands 24 feet tall and stretches 4,752 feet across, creates a reservoir covering 53 acres, and has a maximum storage capacity of 735 acre-feet. Completed in 1892, the structure is over a century old.

This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated unsatisfactory, indicating serious safety deficiencies exist that require immediate attention or remedial action. An emergency action plan is in place for this dam. The most recent inspection on record was 03/03/2022.

Living Downstream

If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Colorado dam safety program can provide more specific information about emergency planning for this structure.

Search for dams near your address to see all dams in your area with hazard classifications and safety data.

High HazardUnsatisfactory ConditionEmergency Action Plan: Yes

Location

StateColorado
CountyDenver
Nearest CityDenver
River/StreamWesterly Creek-os
Coordinates39.70233, -104.88949

Physical Characteristics

Dam TypeEarth
NID Height24 ft
Dam Height20 ft
Dam Length4,752 ft
Year Completed1892 (134 years old)

Storage & Hydraulics

NID Storage735 acre-ft
Max Storage735 acre-ft
Normal Storage600 acre-ft
Surface Area53 acres
Max Discharge1,356 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeIrrigation
OwnerFAIRMOUNT CEMETERY (ZAVILLA, ANDY)
Owner TypePrivate
Hazard ClassificationHigh
Condition AssessmentUnsatisfactory
Last Inspection03/03/2022
Emergency Action PlanYes

Identifiers

NID IDCO01147
Federal IDCO01147
More InfoState Dam Safety Program

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