Big Monitor #1
Big Monitor #1 is an earth dam located in Montrose County, Colorado, built in 1946. It carries a Low hazard potential classification and has a fair condition assessment.
About Big Monitor #1
The primary purpose of Big Monitor #1 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Graziano, James (private). It impounds the Roubideau Creek-tr near Delta.
The dam stands 21 feet tall and stretches 280 feet across, creates a reservoir covering 9 acres, and has a maximum storage capacity of 107 acre-feet. Completed in 1946, the structure is well-established, with more than 75 years of service.
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 05/15/2020.
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Location
| State | Colorado |
| County | Montrose |
| Nearest City | Delta |
| River/Stream | Roubideau Creek-tr |
| Coordinates | 38.51167, -108.31557 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 21 ft |
| Dam Height | 19 ft |
| Dam Length | 280 ft |
| Year Completed | 1946 (80 years old) |
Storage & Hydraulics
| NID Storage | 107 acre-ft |
| Max Storage | 107 acre-ft |
| Normal Storage | 80 acre-ft |
| Surface Area | 9 acres |
| Max Discharge | 161 cfs |
| Spillway Type | None |
Ownership & Safety
| Purpose | Irrigation |
| Owner | GRAZIANO, JAMES |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 05/15/2020 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | CO02847 |
| Federal ID | CO02847 |
| More Info | State Dam Safety Program |