Rainbow Lake
Rainbow Lake is an earth dam located in Larimer County, Colorado, built in 2016. It carries a Low hazard potential classification.
About Rainbow Lake
The primary purpose of Rainbow Lake is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Big Elk Meadows Hoa (private). It impounds the W Fork Little Thompson near Pinewood Springs.
The dam stands 16 feet tall and stretches 300 feet across, creates a reservoir covering 7 acres, and has a maximum storage capacity of 69 acre-feet. Completed in 2016, the structure is relatively new.
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.
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Location
| State | Colorado |
| County | Larimer |
| Nearest City | Pinewood Springs |
| River/Stream | W Fork Little Thompson |
| Coordinates | 40.26117, -105.42985 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 16 ft |
| Dam Height | 9 ft |
| Dam Length | 300 ft |
| Year Completed | 2016 (10 years old) |
Storage & Hydraulics
| NID Storage | 69 acre-ft |
| Max Storage | 69 acre-ft |
| Normal Storage | 28 acre-ft |
| Surface Area | 7 acres |
| Max Discharge | 2,575 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | BIG ELK MEADOWS HOA |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | CO03000 |
| Federal ID | CO03000 |
| More Info | State Dam Safety Program |