|
Incident ID |
NY00614-1318 |
|
Dam Name |
MCGREGOR DAM |
|
Downstream Hazard Potential |
H |
|
State |
NY |
|
Incident Date |
08/28/2011 |
|
Incident Type |
Non-failure |
|
Incident Driver |
Hydrologic/flooding |
|
Incident Mechanism 1 |
Spillway Erosion/head Cutting |
|
Incident Mechanism 2 |
|
|
Incident Mechanism 3 |
|
|
Incident Description |
Peak flow was 4 ft over tertiary spillway. High flows scoured 6" to 12' of the sandstone bedrock at the base of the dam due to the impact of the spillway flow. Continued minor scouring beneath a number of concrete splash aprons. Hurricane Irene |
|
Named Hydrologic Event |
Irene |
|
EAP Enacted (Y/N) due to Incident |
No |
|
Fatalities (Number) |
|
|
Number of People Evacuated |
|
|
Number of Habitable Structures Evacuated |
|
|
Number of Habitable Structures Flooded |
|
|
Other Infrastructure Impacts |
|
|
Economic Damages (in $) |
|
|
Volume released at failure (ac-ft) |
|
|
Response |
|
|
Additional Remarks or Updates |
Two people killed when car drove over washed out highway culvert downstream of the dam. |
|
Incident Time |
|
|
Incident Duration |
|
|
Incident Report Produced |
|
|
Information Sources |
|
|
Owner Type |
S |
|
Dam Type |
CB |
|
Primary Purpose(s) |
R |
|
EAP |
Y |
|
Year Completed |
1968 |
|
Year Modified |
0 |
|
Dam Height |
37 ft |
|
Max Storage (ac-ft) |
735 ac-ft |
|
Surface Area (acres) |
147 acres |
|
River Name |
CHAZY RIVER |
|
Latitude |
44.8689 |
|
Longitude |
-73.675 |
|
Regulatory Agency(ies) |
NYS DEC |
|
NID Number |
NY00614 |
|
Attachments |
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