O'BRIEN LAKE DAM - OH00398-3534

Incident ID OH00398-3534
Dam Name O'BRIEN LAKE DAM
Downstream Hazard Potential L
State OH
Incident Date 04/22/2022
Incident Type Non-failure
Incident Driver Deterioration Or Poor Condition
Incident Mechanism 1 Spillway Pipe Failure
Incident Mechanism 2 Sinkhole
Incident Mechanism 3 Erosion
Incident Description CMP principal spillway riser failed and caused a sinkhole on the upstream slope and erosion into the crest. Outlet pipe was also severally deteriorated and there was a large erosion scrap on the downstream slope that almost reached the crest. The operability of the lake drain was unknow plus it could not be accessed due to the amount of water going into the riser. A channel was excavated into the emergency spillway to lower the water level by 4 feet. Once the water level was lowered to this elevation windows in the riser were cut out to completely drain the lake. The lake drain was eventually operated and opened completely.
Named Hydrologic Event
EAP Enacted (Y/N) due to Incident No
Fatalities (Number)
Number of People Evacuated 0
Number of Habitable Structures Evacuated 0
Number of Habitable Structures Flooded 0
Other Infrastructure Impacts None
Economic Damages (in $)
Volume released at failure (ac-ft)
Response No EAP but local officials were notified. The dam owner was very cooperative. They were able to get a contractor on site relatively quickly and agreed with our plan of action. The County SWCD office keeped us up-to-date with the progess after the initial emergency was over.
Additional Remarks or Updates
Incident Time
Incident Duration 2 weeks
Incident Report Produced Yes
Information Sources OH Dam Safety
Owner Type P
Dam Type RE
Primary Purpose(s) R
EAP N
Year Completed 1968
Year Modified 0
Dam Height 23 ft
Max Storage (ac-ft) 168 ac-ft
Surface Area (acres) 20 acres
River Name TRIBUTARY TO THREE BROTHERS CREEK
Latitude 41.6575
Longitude -80.7983
Regulatory Agency(ies) DEPARTMENT OF NATURAL RESOURCES
NID Number OH00398
Attachments