Isom No 3 is an earth dam located in Bryan County, Oklahoma, built in 1968. It carries a Low hazard potential classification.
Dam profile
NID height · 20 ft20 ft tall and 1,040 ft long. 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 Isom No 3
The primary purpose of Isom No 3 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Bruce Isom (private). It impounds the Tr-j-n Cr near Burris Cemetery.
The dam stands 20 feet tall and stretches 1,040 feet across, creates a reservoir covering 19 acres, and has a maximum storage capacity of 150 acre-feet. Completed in 1968, 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 09/10/1999. That was over 27 years ago.
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Location
| State | Oklahoma |
| County | Bryan |
| Nearest City | Burris Cemetery |
| River/Stream | Tr-j-n Cr |
| Coordinates | 33.94489, -96.28142 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 1,040 ft |
| Year Completed | 1968 (58 years old) |
Storage & Hydraulics
| NID Storage | 150 acre-ft |
| Max Storage | 150 acre-ft |
| Normal Storage | 110 acre-ft |
| Surface Area | 19 acres |
| Max Discharge | 438 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Bruce Isom |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 09/10/1999 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OK00061 |
| Federal ID | OK00061 |
| More Info | State Dam Safety Program |