Holt is an earth dam located in Weld County, Colorado, built in 1893. It carries a Low hazard potential classification.
Dam profile
NID height · 11 ft11 ft tall and 725 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 Holt
The primary purpose of Holt is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Hank Miller (private). It impounds the Howlett Gulch near Platteville.
The dam stands 11 feet tall and stretches 725 feet across, creates a reservoir covering 18 acres, and has a maximum storage capacity of 279 acre-feet. Completed in 1893, 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 10/15/1986. That was over 40 years ago.
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Location
| State | Colorado |
| County | Weld |
| Nearest City | Platteville |
| River/Stream | Howlett Gulch |
| Coordinates | 40.22667, -104.96890 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 11 ft |
| Dam Height | 11 ft |
| Dam Length | 725 ft |
| Year Completed | 1893 (133 years old) |
Storage & Hydraulics
| NID Storage | 279 acre-ft |
| Max Storage | 279 acre-ft |
| Normal Storage | 90 acre-ft |
| Surface Area | 18 acres |
| Max Discharge | 10 cfs |
| Spillway Type | None |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Hank Miller |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 10/15/1986 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | CO01774 |
| Federal ID | CO01774 |
| More Info | State Dam Safety Program |