Hill James L is an earth dam located in Grady County, Oklahoma, built in 1960. It carries a Low hazard potential classification.
Dam profile
NID height · 30 ft30 ft tall and 450 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 embankment section and the water level is illustrative.
About Hill James L
Hill James L is a dam in Grady, Oklahoma. The dam is owned by James L Hill (private). It impounds the West Winter Cr near Naples.
The dam stands 30 feet tall and stretches 450 feet across, and has a maximum storage capacity of 100 acre-feet. Completed in 1960, 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. The most recent inspection on record was 08/27/2010. That was over 16 years ago.
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Location
| State | Oklahoma |
| County | Grady |
| Nearest City | Naples |
| River/Stream | West Winter Cr |
| Coordinates | 35.09382, -97.73097 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 450 ft |
| Year Completed | 1960 (66 years old) |
Storage & Hydraulics
| NID Storage | 100 acre-ft |
| Max Storage | 100 acre-ft |
| Normal Storage | 50 acre-ft |
| Max Discharge | 9,200 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Other |
| Owner | James L Hill |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 08/27/2010 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OK12894 |
| Federal ID | OK12894 |
| More Info | State Dam Safety Program |