Longs Peak #2

Longs Peak #2 is an earth dam located in Boulder County, Colorado, built in 1968. It carries a Low hazard potential classification.

About Longs Peak #2

The primary purpose of Longs Peak #2 is fish and wildlife pond. The dam creates habitat for fish and wildlife, supporting local ecosystems and potentially serving conservation goals. The dam is owned by Sarah Al-jammaz, (private). It impounds the St. Vrain Creek-os near Longmont.

The dam stands 51 feet tall and stretches 2,230 feet across, creates a reservoir covering 12 acres, and has a maximum storage capacity of 376 acre-feet. Completed in 1968, the structure is well into its service life at over 50 years old.

This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. The most recent inspection on record was 06/11/2019.

At 51 feet, this dam is taller than 93% of dams nationwide.

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Low HazardNot Rated ConditionEmergency Action Plan: Not Required

Location

StateColorado
CountyBoulder
Nearest CityLongmont
River/StreamSt. Vrain Creek-os
Coordinates40.21029, -105.15862

Physical Characteristics

Dam TypeEarth
NID Height51 ft
Dam Height41 ft
Dam Length2,230 ft
Year Completed1968 (58 years old)

Storage & Hydraulics

NID Storage376 acre-ft
Max Storage376 acre-ft
Normal Storage286 acre-ft
Surface Area12 acres
Max Discharge800 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeFish and Wildlife Pond
OwnerSARAH AL-JAMMAZ,
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentNot Rated
Last Inspection06/11/2019
Emergency Action PlanNot Required

Identifiers

NID IDCO00179
Federal IDCO00179
More InfoState Dam Safety Program

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