Coblentz is a gravity dam located in Haskell County, Oklahoma, built in 1932. It carries a Low hazard potential classification.
Dam profile
NID height · 30 ft30 ft tall and 600 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 Coblentz
Coblentz is a dam in Haskell, Oklahoma. The dam is owned by 4-f Ranch LLC (private). It impounds the Tr-mill Cr near Lewisville C..
The dam stands 30 feet tall and stretches 600 feet across, creates a reservoir covering 19 acres, and has a maximum storage capacity of 248 acre-feet. Completed in 1932, 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 12/03/2010. That was over 15 years ago.
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Location
| State | Oklahoma |
| County | Haskell |
| Nearest City | Lewisville C. |
| River/Stream | Tr-mill Cr |
| Coordinates | 35.08192, -95.32688 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 600 ft |
| Year Completed | 1932 (94 years old) |
Storage & Hydraulics
| NID Storage | 248 acre-ft |
| Max Storage | 248 acre-ft |
| Normal Storage | 223 acre-ft |
| Surface Area | 19 acres |
| Max Discharge | 1,395 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Other |
| Owner | 4-f Ranch LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 12/03/2010 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OK10675 |
| Federal ID | OK10675 |
| More Info | State Dam Safety Program |