National Properties Inc
National Properties Inc is an earth dam located in Cleveland County, Oklahoma, built in 1960. It carries a Low hazard potential classification.
About National Properties Inc
National Properties Inc is a dam in Cleveland, Oklahoma. The dam is owned by Billy Ray & Sharon L Neff (private). It impounds the Tr-rock Creek near Norman.
The dam stands 26 feet tall and stretches 720 feet across, creates a reservoir covering 7 acres, and has a maximum storage capacity of 110 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 08/24/2010. That was over 15 years ago.
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Location
| State | Oklahoma |
| County | Cleveland |
| Nearest City | Norman |
| River/Stream | Tr-rock Creek |
| Coordinates | 35.22535, -97.39259 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 26 ft |
| Dam Height | 26 ft |
| Dam Length | 720 ft |
| Year Completed | 1960 (66 years old) |
Storage & Hydraulics
| NID Storage | 110 acre-ft |
| Max Storage | 110 acre-ft |
| Normal Storage | 50 acre-ft |
| Surface Area | 7 acres |
| Max Discharge | 3,600 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Other |
| Owner | BILLY RAY & SHARON L NEFF |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 08/24/2010 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OK12574 |
| Federal ID | OK12574 |
| More Info | State Dam Safety Program |