Griggs is an earth dam located in La Plata County, Colorado, built in 1999. It carries a Significant hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 13 ft13 ft tall and 250 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 Griggs
The primary purpose of Griggs is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by David & Susie Griggs (david Griggs) (private). It impounds the Beaver Creek-os near Bayfield.
The dam stands 13 feet tall and stretches 250 feet across, creates a reservoir covering 1 acres, and has a maximum storage capacity of 7 acre-feet. Completed in 1999, the structure is 27 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in 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 05/24/2013. That was over 13 years ago.
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Location
| State | Colorado |
| County | La Plata |
| Nearest City | Bayfield |
| River/Stream | Beaver Creek-os |
| Coordinates | 37.28834, -107.49191 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 13 ft |
| Dam Height | 13 ft |
| Dam Length | 250 ft |
| Year Completed | 1999 (27 years old) |
Storage & Hydraulics
| NID Storage | 7 acre-ft |
| Max Storage | 7 acre-ft |
| Normal Storage | 4 acre-ft |
| Surface Area | 1 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | David & Susie Griggs (david Griggs) |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 05/24/2013 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CO02885 |
| Federal ID | CO02885 |
| More Info | State Dam Safety Program |