|
Incident ID |
CO00759-2094 |
|
Dam Name |
TWO BUTTES |
|
Downstream Hazard Potential |
H |
|
State |
CO |
|
Incident Date |
08/08/2013 |
|
Incident Type |
Non-failure |
|
Incident Driver |
Hydrologic/flooding |
|
Incident Mechanism 1 |
Insufficient Spillway Capacity |
|
Incident Mechanism 2 |
|
|
Incident Mechanism 3 |
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|
Incident Description |
Due to heavy rainfall reservoir went from dry 55 feet above the outlet between 8-1 & 8-8. There was concern that the spillway could flow and potentially the dam could overtop due to a spillway not meeting the Rules. |
|
Named Hydrologic Event |
|
|
EAP Enacted (Y/N) due to Incident |
Yes |
|
Fatalities (Number) |
|
|
Number of People Evacuated |
|
|
Number of Habitable Structures Evacuated |
|
|
Number of Habitable Structures Flooded |
|
|
Other Infrastructure Impacts |
|
|
Economic Damages (in $) |
|
|
Volume released at failure (ac-ft) |
|
|
Response |
|
|
Additional Remarks or Updates |
Since the design event has a low probability of occurrence, allowances were made to the owner to temporarily store over the restricted storage level. Activated EAP at a Level 1, unusual condition level; Communication with Emergency Managers, and increased surveillance of the dam on a daily basis is required and being performed by the owner's staff. |
|
Incident Time |
|
|
Incident Duration |
|
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Incident Report Produced |
|
|
Information Sources |
|
|
Owner Type |
S |
|
Dam Type |
RE |
|
Primary Purpose(s) |
RF |
|
EAP |
Y |
|
Year Completed |
1908 |
|
Year Modified |
0 |
|
Dam Height |
106 ft |
|
Max Storage (ac-ft) |
40654 ac-ft |
|
Surface Area (acres) |
1182 acres |
|
River Name |
TWO BUTTE CREEK |
|
Latitude |
37.6359 |
|
Longitude |
-102.538 |
|
Regulatory Agency(ies) |
DWR |
|
NID Number |
CO00759 |
|
Attachments |
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