Cottonwood is an earth dam located in Grand County, Colorado, built in 1961. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 36 ft36 ft tall and 330 ft long, taller than 82% of U.S. dams with a recorded height. 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 Cottonwood
The primary purpose of Cottonwood is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Nancy Barber (dale Lind (granby, Co)) (private). It impounds the Gardiner Creek near Hot Sulphur Springs.
The dam stands 36 feet tall and stretches 330 feet across, creates a reservoir covering 7 acres, has a maximum storage capacity of 106 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1961, the structure is well into its service life at over 50 years 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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 06/19/2019.
At 36 feet, this dam is taller than 82% of dams nationwide.
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Location
| State | Colorado |
| County | Grand |
| Nearest City | Hot Sulphur Springs |
| River/Stream | Gardiner Creek |
| Coordinates | 40.07334, -106.07223 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 36 ft |
| Dam Height | 31 ft |
| Dam Length | 330 ft |
| Year Completed | 1961 (65 years old) |
Storage & Hydraulics
| NID Storage | 106 acre-ft |
| Max Storage | 106 acre-ft |
| Normal Storage | 71 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 543 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Nancy Barber (dale Lind (granby, Co)) |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/19/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | CO00707 |
| Federal ID | CO00707 |
| More Info | State Dam Safety Program |