|
Incident ID |
ND00027-2609 |
|
Dam Name |
TOLNA DAM NO. 1 |
|
Downstream Hazard Potential |
S |
|
State |
ND |
|
Incident Date |
03/13/2015 |
|
Incident Type |
Non-failure |
|
Incident Driver |
Deterioration Or Poor Condition |
|
Incident Mechanism 1 |
Spillway Chute Failure |
|
Incident Mechanism 2 |
|
|
Incident Mechanism 3 |
|
|
Incident Description |
Caused by water flowing under the spillway and causing erosion under the spillway |
|
Named Hydrologic Event |
|
|
EAP Enacted (Y/N) due to Incident |
|
|
Fatalities (Number) |
0 |
|
Number of People Evacuated |
0 |
|
Number of Habitable Structures Evacuated |
0 |
|
Number of Habitable Structures Flooded |
0 |
|
Other Infrastructure Impacts |
|
|
Economic Damages (in $) |
|
|
Volume released at failure (ac-ft) |
|
|
Response |
|
|
Additional Remarks or Updates |
This is an old dam built in the 1930s and it has a history of problems with seepage under the spillway. No evacuations were necessary, but ND Highway 15, immediately downstream of the dam, was closed overnight as a precaution. The dam did not fail completely, and is currently being repaired. |
|
Incident Time |
|
|
Incident Duration |
|
|
Incident Report Produced |
|
|
Information Sources |
|
|
Owner Type |
L |
|
Dam Type |
RE |
|
Primary Purpose(s) |
R |
|
EAP |
Y |
|
Year Completed |
1936 |
|
Year Modified |
1941 |
|
Dam Height |
36 ft |
|
Max Storage (ac-ft) |
3080 ac-ft |
|
Surface Area (acres) |
166 acres |
|
River Name |
TOLNA COULEE |
|
Latitude |
47.8045 |
|
Longitude |
-98.3943 |
|
Regulatory Agency(ies) |
NDSWC |
|
NID Number |
ND00027 |
|
Attachments |
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