Landgraf R is an earth dam located in Marshall County, Oklahoma, built in 1960. It carries a Low hazard potential classification.
Dam profile
NID height · 28 ft28 ft tall and 415 ft long, taller than 62% 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 Landgraf R
Landgraf R is a dam in Marshall, Oklahoma. The dam is owned by Ronny Lee & Tammy Lynn Landgraf (private). It impounds the Tr-hauani Cr near Texoma Lake.
The dam stands 28 feet tall and stretches 415 feet across, creates a reservoir covering 5 acres, and has a maximum storage capacity of 81 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 10/25/2001. That was over 24 years ago.
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Location
| State | Oklahoma |
| County | Marshall |
| Nearest City | Texoma Lake |
| River/Stream | Tr-hauani Cr |
| Coordinates | 34.02919, -96.89710 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 28 ft |
| Dam Height | 28 ft |
| Dam Length | 415 ft |
| Year Completed | 1960 (66 years old) |
Storage & Hydraulics
| NID Storage | 81 acre-ft |
| Max Storage | 81 acre-ft |
| Normal Storage | 34 acre-ft |
| Surface Area | 5 acres |
| Max Discharge | 720 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Other |
| Owner | Ronny Lee & Tammy Lynn Landgraf |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 10/25/2001 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OK12720 |
| Federal ID | OK12720 |
| More Info | State Dam Safety Program |