Ellis Lake is an earth dam located in Pottawatomie County, Oklahoma, built in 1960. It carries a Low hazard potential classification.
Dam profile
NID height · 20 ft20 ft tall and 550 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 Ellis Lake
Ellis Lake is a dam in Pottawatomie, Oklahoma. The dam is owned by Rollingstone Stables LLC (private). It impounds the Tr-north Canadian River near Johnston.
The dam stands 20 feet tall and stretches 550 feet across, creates a reservoir covering 2 acres, and has a maximum storage capacity of 85 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 10/23/2011. That was over 14 years ago.
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Location
| State | Oklahoma |
| County | Pottawatomie |
| Nearest City | Johnston |
| River/Stream | Tr-north Canadian River |
| Coordinates | 35.39149, -96.84860 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 550 ft |
| Year Completed | 1960 (66 years old) |
Storage & Hydraulics
| NID Storage | 85 acre-ft |
| Max Storage | 85 acre-ft |
| Normal Storage | 40 acre-ft |
| Surface Area | 2 acres |
| Max Discharge | 640 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Other |
| Owner | Rollingstone Stables LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 10/23/2011 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OK20744 |
| Federal ID | OK20744 |
| More Info | State Dam Safety Program |