Clark #1 is an earth dam located in Huerfano County, Colorado, built in 1904. It carries a Low hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 22 ft22 ft tall and 2,340 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 Clark #1
The primary purpose of Clark #1 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by William & Nancy Shaffer (william Shaffer) (private). It impounds the Apache Creek-os near Boone.
The dam stands 22 feet tall and stretches 2,340 feet across, creates a reservoir covering 19 acres, and has a maximum storage capacity of 277 acre-feet. Completed in 1904, 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. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 12/19/2000. That was over 25 years ago.
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Location
| State | Colorado |
| County | Huerfano |
| Nearest City | Boone |
| River/Stream | Apache Creek-os |
| Coordinates | 37.84000, -104.82058 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 2,340 ft |
| Year Completed | 1904 (122 years old) |
Storage & Hydraulics
| NID Storage | 277 acre-ft |
| Max Storage | 277 acre-ft |
| Normal Storage | 220 acre-ft |
| Surface Area | 19 acres |
| Max Discharge | 2,730 cfs |
| Spillway Type | None |
Ownership & Safety
| Purpose | Irrigation |
| Owner | William & Nancy Shaffer (william Shaffer) |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 12/19/2000 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | CO02055 |
| Federal ID | CO02055 |
| More Info | State Dam Safety Program |