|
Incident ID |
OH02895-3535 |
|
Dam Name |
NEW WATERSTONE LAKE DAM |
|
Downstream Hazard Potential |
L |
|
State |
OH |
|
Incident Date |
05/23/2022 |
|
Incident Type |
Non-failure |
|
Incident Driver |
Deterioration Or Poor Condition |
|
Incident Mechanism 1 |
Spillway Riser Failure |
|
Incident Mechanism 2 |
Sinkhole |
|
Incident Mechanism 3 |
|
|
Incident Description |
CMP principal spillway riser failed at the bottom of the riser. This developed into a sinkhole and erosion of the upstream slope so that the hole was in direct connect with the lake. Lake completely drained through large hole in the riser. |
|
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 |
|
|
Additional Remarks or Updates |
The owner called the dam safety office after most of the damage to the dam had already occurred and most of the water had drained through the hole in the spillway. |
|
Incident Time |
|
|
Incident Duration |
1 day |
|
Incident Report Produced |
Yes |
|
Information Sources |
OH Dam Safety |
|
Owner Type |
P |
|
Dam Type |
RE |
|
Primary Purpose(s) |
R |
|
EAP |
N |
|
Year Completed |
1997 |
|
Year Modified |
0 |
|
Dam Height |
19 ft |
|
Max Storage (ac-ft) |
83 ac-ft |
|
Surface Area (acres) |
4 acres |
|
River Name |
TRIBUTARY TO POLK RUN |
|
Latitude |
39.2917 |
|
Longitude |
-84.3036 |
|
Regulatory Agency(ies) |
DEPARTMENT OF NATURAL RESOURCES |
|
NID Number |
OH02895 |
|
Attachments |
|
