Beers Sisters Lake is an earth dam located in Jefferson County, Colorado, built in 1966. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 27 ft27 ft tall and 750 ft long, taller than 59% 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 Beers Sisters Lake
The primary purpose of Beers Sisters Lake is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Foothills Park & Recreation District (insley, Coli (local government). It impounds the S. Platte River-tr near Littleton.
The dam stands 27 feet tall and stretches 750 feet across, creates a reservoir covering 8 acres, and has a maximum storage capacity of 83 acre-feet. Completed in 1966, 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 06/01/2022.
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Location
| State | Colorado |
| County | Jefferson |
| Nearest City | Littleton |
| River/Stream | S. Platte River-tr |
| Coordinates | 39.61584, -105.12223 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 27 ft |
| Dam Height | 20 ft |
| Dam Length | 750 ft |
| Year Completed | 1966 (60 years old) |
Storage & Hydraulics
| NID Storage | 83 acre-ft |
| Max Storage | 83 acre-ft |
| Normal Storage | 39 acre-ft |
| Surface Area | 8 acres |
| Max Discharge | 1,060 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Foothills Park & Recreation District (insley, Coli |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/01/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CO00327 |
| Federal ID | CO00327 |
| More Info | State Dam Safety Program |