Incident ID |
NH00480-3441 |
Dam Name |
LOWER IPC DAM |
Downstream Hazard Potential |
S |
State |
NH |
Incident Date |
06/22/2020 |
Incident Type |
Non-failure |
Incident Driver |
Seepage/internal Erosion |
Incident Mechanism 1 |
Piping |
Incident Mechanism 2 |
Excessive/increased Seepage |
Incident Mechanism 3 |
|
Incident Description |
Two whirlpools were observed upstream of the TC spillway |
Named Hydrologic Event |
|
EAP Enacted (Y/N) due to Incident |
No |
Fatalities (Number) |
0 |
Number of People Evacuated |
0 |
Number of Habitable Structures Evacuated |
0 |
Number of Habitable Structures Flooded |
0 |
Other Infrastructure Impacts |
None |
Economic Damages (in $) |
Unknown |
Volume released at failure (ac-ft) |
|
Response |
|
Additional Remarks or Updates |
Low level gate opened until repairs were made |
Incident Time |
|
Incident Duration |
68 days |
Incident Report Produced |
Yes |
Information Sources |
NHDES DAM BUREAU |
Owner Type |
P |
Dam Type |
CNTC |
Primary Purpose(s) |
H |
EAP |
Y |
Year Completed |
1934 |
Year Modified |
1937 |
Dam Height |
16 ft |
Max Storage (ac-ft) |
31 ac-ft |
Surface Area (acres) |
2 acres |
River Name |
NEWFOUND RIVER |
Latitude |
43.6 |
Longitude |
-71.748 |
Regulatory Agency(ies) |
NHDES DAM BUREAU |
NID Number |
NH00480 |
Attachments |
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