|
Incident ID |
DE00060-1206 |
|
Dam Name |
HEARNS POND DAM |
|
Downstream Hazard Potential |
H |
|
State |
DE |
|
Incident Date |
09/08/2011 |
|
Incident Type |
Non-failure |
|
Incident Driver |
Hydrologic/flooding |
|
Incident Mechanism 1 |
Overtopping |
|
Incident Mechanism 2 |
|
|
Incident Mechanism 3 |
|
|
Incident Description |
Overtopping occurred in two separate low areas on the crest of the dam. Minor erosion occurred on the grass downstream slope near the left abutment, and some minor displacement of riprap occurred on the downstream slope near the right abutment. |
|
Named Hydrologic Event |
|
|
EAP Enacted (Y/N) due to Incident |
No |
|
Fatalities (Number) |
|
|
Number of People Evacuated |
0 |
|
Number of Habitable Structures Evacuated |
|
|
Number of Habitable Structures Flooded |
0 |
|
Other Infrastructure Impacts |
|
|
Economic Damages (in $) |
|
|
Volume released at failure (ac-ft) |
0 ac-ft |
|
Response |
|
|
Additional Remarks or Updates |
Dam started overtopping around 7 or 8 pm on 9/08/2011 and overtopping continued until about 8 am on 9/09/2011. Sandbags were placed across each of the low areas on 9/08/2011, which helped to spread out the overtopping flow and reduce erosion. |
|
Incident Time |
12:00 AM |
|
Incident Duration |
|
|
Incident Report Produced |
|
|
Information Sources |
|
|
Owner Type |
S |
|
Dam Type |
REPG |
|
Primary Purpose(s) |
RF |
|
EAP |
N |
|
Year Completed |
1912 |
|
Year Modified |
2002 |
|
Dam Height |
14 ft |
|
Max Storage (ac-ft) |
1434 ac-ft |
|
Surface Area (acres) |
24 acres |
|
River Name |
CLEAR BROOK |
|
Latitude |
38.6793 |
|
Longitude |
-75.594 |
|
Regulatory Agency(ies) |
DNREC |
|
NID Number |
DE00060 |
|
Attachments |
|
