Longs Peak #1 is an earth dam located in Boulder County, Colorado, built in 1960. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 41 ft41 ft tall and 1,300 ft long, taller than 87% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Longs Peak #1
The primary purpose of Longs Peak #1 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 41 feet tall and stretches 1,300 feet across, creates a reservoir covering 7 acres, and has a maximum storage capacity of 173 acre-feet. Completed in 1960, 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. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 06/11/2019.
At 41 feet, this dam is taller than 87% of dams nationwide.
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Location
| State | Colorado |
| County | Boulder |
| Nearest City | Longmont |
| River/Stream | St. Vrain Creek-os |
| Coordinates | 40.21001, -105.16140 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 41 ft |
| Dam Height | 30 ft |
| Dam Length | 1,300 ft |
| Year Completed | 1960 (66 years old) |
Storage & Hydraulics
| NID Storage | 173 acre-ft |
| Max Storage | 173 acre-ft |
| Normal Storage | 88 acre-ft |
| Surface Area | 7 acres |
| Max Discharge | 800 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | Sarah Al-jammaz, |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/11/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | CO00178 |
| Federal ID | CO00178 |
| More Info | State Dam Safety Program |