Router No. 11 Reservoir Report
Nearby: Router No. 49 Sandstone No. 1
Last Updated: December 13, 2025
Router No.
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Summary
11 is a private earth dam located in Johnson, Wyoming, along Flicker Creek. Built in 2007 by designer Hugh Lowham, this dam serves primarily for irrigation purposes, with secondary functions including fire protection, stock, and small fish pond support. Standing at a height of 35 feet and a length of 560 feet, the dam has a storage capacity of 56 acre-feet and a surface area of 3.59 acres.
Despite its low hazard potential, Router No. 11 is currently in poor condition, as assessed during its last inspection in June 2017. The dam features an uncontrolled spillway 40 feet wide and a single valve outlet gate. With a moderate risk rating of 3, there is a clear need for improved risk management measures to ensure the safety and reliability of this infrastructure moving forward.
Located in a picturesque setting surrounded by rock and soil foundations, Router No. 11 presents both a challenge and an opportunity for maintenance and rehabilitation efforts to enhance its performance and contribute to sustainable water resource management in the region. The dam's historical significance and ecological impact underscore the importance of proactive stewardship and investment in its upkeep for the benefit of local communities and the environment.
Year Completed |
2007 |
Dam Length |
560 |
Dam Height |
35 |
River Or Stream |
FLICKER CREEK |
Primary Dam Type |
Earth |
Surface Area |
3.59 |
Hydraulic Height |
30 |
Drainage Area |
0.06 |
Nid Storage |
56 |
Structural Height |
35 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Rock, Soil |
Nid Height |
35 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Wild Horse Creek Near Arvada
|
0cfs |
Powder River At Arvada
|
180cfs |
Clear Creek Near Buffalo
|
18cfs |
Stonepile Creek At Mouth
|
3cfs |
Donkey Creek Near Gillette
|
0cfs |
Rock Creek Near Buffalo
|
70cfs |
Dam Data Reference
Condition Assessment
SatisfactoryNo existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.
Hazard Potential Classification
HighDams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
Router No. 11