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Incident ID |
IN00722-3327 |
|
Dam Name |
GRIGGS LAKE DAM |
|
Downstream Hazard Potential |
H |
|
State |
IN |
|
Incident Date |
02/25/2019 |
|
Incident Type |
Non-failure |
|
Incident Driver |
Deterioration Or Poor Condition |
|
Incident Mechanism 1 |
Spillway Pipe Failure |
|
Incident Mechanism 2 |
Sinkhole |
|
Incident Mechanism 3 |
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|
Incident Description |
Sinkhole is located directly over the CMP principal spillway pipe, bout 1/3 of the way down the back slope of the dam. It is approximately 8 feet in diameter and 8 feet deep to the exposed pipe. |
|
Named Hydrologic Event |
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EAP Enacted (Y/N) due to Incident |
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Fatalities (Number) |
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Number of People Evacuated |
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Number of Habitable Structures Evacuated |
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Number of Habitable Structures Flooded |
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Other Infrastructure Impacts |
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Economic Damages (in $) |
|
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Volume released at failure (ac-ft) |
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Response |
Owner immediately started pumping the lake down with a 6 inch pump |
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Additional Remarks or Updates |
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Incident Time |
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Incident Duration |
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Incident Report Produced |
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|
Information Sources |
IDNR |
|
Owner Type |
P |
|
Dam Type |
RE |
|
Primary Purpose(s) |
R |
|
EAP |
NR |
|
Year Completed |
1964 |
|
Year Modified |
0 |
|
Dam Height |
22 ft |
|
Max Storage (ac-ft) |
82 ac-ft |
|
Surface Area (acres) |
6 acres |
|
River Name |
UNNAMED TRIBUTARY THOMPSON DITCH |
|
Latitude |
39.4406 |
|
Longitude |
-87.3558 |
|
Regulatory Agency(ies) |
IDNR |
|
NID Number |
IN00722 |
|
Attachments |
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