|
Incident ID |
NH00191-1820 |
|
Dam Name |
GORHAM |
|
Downstream Hazard Potential |
L |
|
State |
NH |
|
Incident Date |
10/17/2013 |
|
Incident Type |
Non-failure |
|
Incident Driver |
Deterioration Or Poor Condition |
|
Incident Mechanism 1 |
Spillway Chute Failure |
|
Incident Mechanism 2 |
|
|
Incident Mechanism 3 |
|
|
Incident Description |
Appears structural members supporting upstream facing (timber crib design) in lower left section of spillway had given way resulting in a "V" shaped depression/void in the timber facing. Flow from this void exited through the downstream apron drains. |
|
Named Hydrologic Event |
|
|
EAP Enacted (Y/N) due to Incident |
|
|
Fatalities (Number) |
|
|
Number of People Evacuated |
0 |
|
Number of Habitable Structures Evacuated |
|
|
Number of Habitable Structures Flooded |
0 |
|
Other Infrastructure Impacts |
None |
|
Economic Damages (in $) |
NONE |
|
Volume released at failure (ac-ft) |
|
|
Response |
|
|
Additional Remarks or Updates |
Structural concerns found on upstream face of timber crib dam during dive inspection. |
|
Incident Time |
|
|
Incident Duration |
|
|
Incident Report Produced |
|
|
Information Sources |
|
|
Owner Type |
P |
|
Dam Type |
TCERRE |
|
Primary Purpose(s) |
H |
|
EAP |
NR |
|
Year Completed |
1904 |
|
Year Modified |
0 |
|
Dam Height |
24 ft |
|
Max Storage (ac-ft) |
370 ac-ft |
|
Surface Area (acres) |
45 acres |
|
River Name |
ANDROSCOGGIN RIVER |
|
Latitude |
44.4082 |
|
Longitude |
-71.1952 |
|
Regulatory Agency(ies) |
NH DEPARTMENT OF ENVIRONMENTAL SERVICES DAM BUREAU |
|
NID Number |
NH00191 |
|
Attachments |
Y |
