Trio is an earth dam located in Delta County, Colorado, built in 1955. It carries a Low hazard potential classification.
Dam profile
NID height · 30 ft30 ft tall and 325 ft long, taller than 68% 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 Trio
The primary purpose of Trio is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Sheppard Irrevocable Trust (private). It impounds the Surface Creek-tr near Cedaredge.
The dam stands 30 feet tall and stretches 325 feet across, creates a reservoir covering 13 acres, and has a maximum storage capacity of 232 acre-feet. Completed in 1955, the structure is well into its service life at over 50 years 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 06/30/2021.
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Location
| State | Colorado |
| County | Delta |
| Nearest City | Cedaredge |
| River/Stream | Surface Creek-tr |
| Coordinates | 39.04668, -107.83558 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 28 ft |
| Dam Length | 325 ft |
| Year Completed | 1955 (71 years old) |
Storage & Hydraulics
| NID Storage | 232 acre-ft |
| Max Storage | 232 acre-ft |
| Normal Storage | 154 acre-ft |
| Surface Area | 13 acres |
| Max Discharge | 966 cfs |
| Spillway Type | None |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Sheppard Irrevocable Trust |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 06/30/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | CO00632 |
| Federal ID | CO00632 |
| More Info | State Dam Safety Program |