Lily Lake Dam
Lily Lake Dam is an earth dam located in Larimer County, Colorado, built in 1913. It carries a High hazard potential classification.
About Lily Lake Dam
The primary purpose of Lily Lake Dam 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 Doi Nps (federal). It impounds the Fish Creek near Estes Park, Co.
The dam stands 15 feet tall and stretches 240 feet across, and has a maximum storage capacity of 91 acre-feet. Completed in 1913, the structure is over a century old.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. An emergency action plan is in place for this dam. The most recent inspection on record was 06/06/2023.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Colorado dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Colorado |
| County | Larimer |
| Nearest City | Estes Park, Co |
| River/Stream | Fish Creek |
| Coordinates | 40.30833, -105.53830 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 240 ft |
| Year Completed | 1913 (113 years old) |
Storage & Hydraulics
| NID Storage | 91 acre-ft |
| Max Storage | 91 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | DOI NPS |
| Owner Type | Federal |
| Hazard Classification | High |
| Condition Assessment | Not Available |
| Last Inspection | 06/06/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CO02364 |
| Federal ID | CO02364 |
| More Info | State Dam Safety Program |