|
Incident ID |
SD00026-3415 |
|
Dam Name |
MENNO DAM |
|
Downstream Hazard Potential |
H |
|
State |
SD |
|
Incident Date |
06/12/1984 |
|
Incident Type |
Failure |
|
Incident Driver |
Hydrologic/flooding |
|
Incident Mechanism 1 |
Overtopping |
|
Incident Mechanism 2 |
Insufficient Spillway Capacity |
|
Incident Mechanism 3 |
|
|
Incident Description |
Heavy rainfall on the evening of June 11, 1984 along with high reservoir levels from heavy rain in the days prior caused the dam to overtop and fail. |
|
Named Hydrologic Event |
|
|
EAP Enacted (Y/N) due to Incident |
|
|
Fatalities (Number) |
0 |
|
Number of People Evacuated |
unknown |
|
Number of Habitable Structures Evacuated |
1 |
|
Number of Habitable Structures Flooded |
1 |
|
Other Infrastructure Impacts |
Other |
|
Economic Damages (in $) |
|
|
Volume released at failure (ac-ft) |
|
|
Response |
|
|
Additional Remarks or Updates |
The hog barn and approximately 450 hogs, farmstead buildings, and farm equipment associated with the downstream farm house. There was a court case over damages (Heer vs the State of South Dakota) that made it to the South Dakota Supreme Court which awarded the Heers approximately $650,000 in damages. Dam was reconstructed about 400 feet downstream of original dam site -ground breaking April 1995, dedication June 1996, and first flow through spillway March 1997. |
|
Incident Time |
7:00 |
|
Incident Duration |
|
|
Incident Report Produced |
|
|
Information Sources |
SD Dam Safety |
|
Owner Type |
S |
|
Dam Type |
RE |
|
Primary Purpose(s) |
R |
|
EAP |
Y |
|
Year Completed |
1935 |
|
Year Modified |
1996 |
|
Dam Height |
53 ft |
|
Max Storage (ac-ft) |
2050 ac-ft |
|
Surface Area (acres) |
48 acres |
|
River Name |
JAMES RIVER TRIBUTARY |
|
Latitude |
43.2617 |
|
Longitude |
-97.6167 |
|
Regulatory Agency(ies) |
DENR |
|
NID Number |
SD00026 |
|
Attachments |
|
