Chelsea Reservoir No. 1 is an earth dam located in Rogers County, Oklahoma, built in 1950. It carries a Low hazard potential classification.
Dam profile
NID height · 45 ft45 ft tall and 760 ft long, taller than 90% 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 Chelsea Reservoir No. 1
The primary purpose of Chelsea Reservoir No. 1 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 Town of Chelsea (local government). It impounds the Spencer Creek near Spencer Creek Cove Oologah.
The dam stands 45 feet tall and stretches 760 feet across, creates a reservoir covering 22 acres, and has a maximum storage capacity of 570 acre-feet. Completed in 1950, 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. The most recent inspection on record was 05/20/2011. That was over 15 years ago.
At 45 feet, this dam is taller than 90% of dams nationwide.
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Location
| State | Oklahoma |
| County | Rogers |
| Nearest City | Spencer Creek Cove Oologah |
| River/Stream | Spencer Creek |
| Coordinates | 36.54188, -95.46923 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 45 ft |
| Dam Height | 45 ft |
| Dam Length | 760 ft |
| Year Completed | 1950 (76 years old) |
Storage & Hydraulics
| NID Storage | 570 acre-ft |
| Max Storage | 570 acre-ft |
| Normal Storage | 102 acre-ft |
| Surface Area | 22 acres |
| Max Discharge | 1,500 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Town of Chelsea |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 05/20/2011 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OK10481 |
| Federal ID | OK10481 |
| More Info | State Dam Safety Program |