Plaster
Plaster is an earth dam located in Broomfield County, Colorado, built in 1909. It carries a Low hazard potential classification and has a fair condition assessment.
About Plaster
The primary purpose of Plaster is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by City Of Broomfield (middleton, Brennan) (local government). It impounds the Big Dry Creek-tr near Broomfield.
The dam stands 12 feet tall and stretches 495 feet across, creates a reservoir covering 14 acres, and has a maximum storage capacity of 218 acre-feet. Completed in 1909, 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 08/17/1988. That was over 37 years ago.
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Location
| State | Colorado |
| County | Broomfield |
| Nearest City | Broomfield |
| River/Stream | Big Dry Creek-tr |
| Coordinates | 39.94834, -105.02723 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 12 ft |
| Dam Height | 12 ft |
| Dam Length | 495 ft |
| Year Completed | 1909 (117 years old) |
Storage & Hydraulics
| NID Storage | 218 acre-ft |
| Max Storage | 218 acre-ft |
| Normal Storage | 35 acre-ft |
| Surface Area | 14 acres |
| Max Discharge | 274 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | CITY OF BROOMFIELD (MIDDLETON, BRENNAN) |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 08/17/1988 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | CO01741 |
| Federal ID | CO01741 |
| More Info | State Dam Safety Program |