|
Incident ID |
CO00363-3169 |
|
Dam Name |
JEFFERSON LAKE |
|
Downstream Hazard Potential |
H |
|
State |
CO |
|
Incident Date |
06/22/2017 |
|
Incident Type |
Non-failure |
|
Incident Driver |
Seepage/internal Erosion |
|
Incident Mechanism 1 |
Excessive/increased Seepage |
|
Incident Mechanism 2 |
Erosion |
|
Incident Mechanism 3 |
|
|
Incident Description |
Owners staff observed a small whirlpool in the reservoir at the reservoir edge adjacent to the dam. Possible contact erosion PFM. Resulted in an emergecy field investigation and a reservoir storage restriction. |
|
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 |
restrictred water level and observation |
|
Additional Remarks or Updates |
Resulted in an emergency field investigation and a reservoir storage restriction. Owner is working with Engineer to develop a repair plan |
|
Incident Time |
14:20 |
|
Incident Duration |
2 days |
|
Incident Report Produced |
Yes |
|
Information Sources |
CO DWR |
|
Owner Type |
L |
|
Dam Type |
RE |
|
Primary Purpose(s) |
S |
|
EAP |
Y |
|
Year Completed |
1951 |
|
Year Modified |
0 |
|
Dam Height |
33 ft |
|
Max Storage (ac-ft) |
3417 ac-ft |
|
Surface Area (acres) |
126 acres |
|
River Name |
JEFFERSON CREEK |
|
Latitude |
39.4506 |
|
Longitude |
-105.863 |
|
Regulatory Agency(ies) |
DWR |
|
NID Number |
CO00363 |
|
Attachments |
|
