Beaver Park East is an earth dam located in Boulder County, Colorado, built in 1892. It carries a Low hazard potential classification.
Dam profile
NID height · 10 ft10 ft tall and 300 ft long. 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 Beaver Park East
The primary purpose of Beaver Park East 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 St. Vrain Reservoir and Fish Company (dan Grant, S (private). It impounds the South St. Vrain Creek-tr near Lyons.
The dam stands 10 feet tall and stretches 300 feet across, creates a reservoir covering 105 acres, has a maximum storage capacity of 2,731 acre-feet, and collects water from a drainage area of 7 square miles. Completed in 1892, the structure is over a century 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 08/18/2020.
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Location
| State | Colorado |
| County | Boulder |
| Nearest City | Lyons |
| River/Stream | South St. Vrain Creek-tr |
| Coordinates | 40.11702, -105.51663 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 300 ft |
| Year Completed | 1892 (134 years old) |
Storage & Hydraulics
| NID Storage | 2,731 acre-ft |
| Max Storage | 2,731 acre-ft |
| Normal Storage | 2,161 acre-ft |
| Surface Area | 105 acres |
| Drainage Area | 7 sq mi |
| Max Discharge | 3,140 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | St. Vrain Reservoir and Fish Company (dan Grant, S |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 08/18/2020 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | CO02839 |
| Federal ID | CO02839 |
| More Info | State Dam Safety Program |