Marfell Lake No. 1 is an earth dam located in Boulder County, Colorado, built in 1880. It carries a Low hazard potential classification.
Dam profile
NID height · 12 ft12 ft tall and 2,700 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 Marfell Lake No. 1
The primary purpose of Marfell Lake No. 1 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Carma Futhey (private). It impounds the Coal Creek-os near Erie.
The dam stands 12 feet tall and stretches 2,700 feet across, creates a reservoir covering 19 acres, and has a maximum storage capacity of 140 acre-feet. Completed in 1880, 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 02/24/1995. That was over 31 years ago.
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Location
| State | Colorado |
| County | Boulder |
| Nearest City | Erie |
| River/Stream | Coal Creek-os |
| Coordinates | 40.01834, -105.08057 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 12 ft |
| Dam Height | 12 ft |
| Dam Length | 2,700 ft |
| Year Completed | 1880 (146 years old) |
Storage & Hydraulics
| NID Storage | 140 acre-ft |
| Max Storage | 140 acre-ft |
| Normal Storage | 79 acre-ft |
| Surface Area | 19 acres |
| Max Discharge | 200 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Carma Futhey |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 02/24/1995 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | CO00236 |
| Federal ID | CO00236 |
| More Info | State Dam Safety Program |