Shell Lake is a gravity dam located in Garfield County, Oklahoma, built in 1915. It carries a Low hazard potential classification.
Dam profile
NID height · 30 ft30 ft tall and 1,000 ft long, taller than 68% 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 concrete gravity section and the water level is illustrative.
About Shell Lake
The primary purpose of Shell Lake is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by George H Giger & Judy Duncan (private). It impounds the 4-d Cr near Crescent.
The dam stands 30 feet tall and stretches 1,000 feet across, creates a reservoir covering 20 acres, and has a maximum storage capacity of 1,080 acre-feet. Completed in 1915, 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. The most recent inspection on record was 12/14/2010. That was over 15 years ago.
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Location
| State | Oklahoma |
| County | Garfield |
| Nearest City | Crescent |
| River/Stream | 4-d Cr |
| Coordinates | 36.20459, -97.53564 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 1,000 ft |
| Year Completed | 1915 (111 years old) |
Storage & Hydraulics
| NID Storage | 1,080 acre-ft |
| Max Storage | 1,080 acre-ft |
| Normal Storage | 575 acre-ft |
| Surface Area | 20 acres |
| Max Discharge | 2,200 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | George H Giger & Judy Duncan |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 12/14/2010 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OK00667 |
| Federal ID | OK00667 |
| More Info | State Dam Safety Program |