|
Incident ID |
NH00519-3440 |
|
Dam Name |
MEADOW LAKE DAM |
|
Downstream Hazard Potential |
L |
|
State |
NH |
|
Incident Date |
07/29/2021 |
|
Incident Type |
Non-failure |
|
Incident Driver |
Deterioration Or Poor Condition |
|
Incident Mechanism 1 |
Spillway Riser Failure |
|
Incident Mechanism 2 |
Sinkhole |
|
Incident Mechanism 3 |
Spillway Pipe Failure |
|
Incident Description |
Corroded CMP riser and outlet created sinkhole around the riser and into the embankment. Corroded low-level outlet pipe with increased seepage. |
|
Named Hydrologic Event |
|
|
EAP Enacted (Y/N) due to Incident |
|
|
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 $) |
Unknown |
|
Volume released at failure (ac-ft) |
|
|
Response |
Emergency oulet was initially installed. Corroded low-level outlet failed some time after resulting in pond loss. Currently repair design is ongoing through consultant. Impoundment is lowered until repairs can be made. |
|
Additional Remarks or Updates |
|
|
Incident Time |
|
|
Incident Duration |
|
|
Incident Report Produced |
Yes |
|
Information Sources |
NHDES DAM BUREAU |
|
Owner Type |
S |
|
Dam Type |
RE |
|
Primary Purpose(s) |
R |
|
EAP |
NR |
|
Year Completed |
1975 |
|
Year Modified |
1991 |
|
Dam Height |
14 ft |
|
Max Storage (ac-ft) |
105 ac-ft |
|
Surface Area (acres) |
18 acres |
|
River Name |
LAMPREY RIVER |
|
Latitude |
43.201 |
|
Longitude |
-71.2054 |
|
Regulatory Agency(ies) |
NHDES DAM BUREAU |
|
NID Number |
NH00519 |
|
Attachments |
|
