Banner Lake #1 Reservoir Report
Nearby: Banner Lake #3 Banner Lake #5
Last Updated: December 13, 2025
Banner Lake #1, located in Weld County, Colorado, is a state-regulated Earth dam completed in 1968 for the primary purpose of serving as a Fish and Wildlife Pond.
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Summary
With a dam height of 10 feet and a length of 747 feet, this reservoir has a storage capacity of 52 acre-feet. The dam is situated on Jim Creek and covers a drainage area of 2 square miles, providing a surface area of 7 acres.
Despite its low hazard potential, Banner Lake #1 poses a high risk due to its condition assessment not being rated. The dam has not been inspected recently, with an inspection frequency of 6 years. The spillway type is listed as 'None', with a spillway width of 15 feet. The reservoir's normal storage capacity is 25 acre-feet, and it has a maximum discharge of 204 cubic feet per second.
For water resource and climate enthusiasts, Banner Lake #1 offers a unique opportunity to study a well-maintained reservoir that serves as a habitat for fish and wildlife. With its strategic location and purposeful design, this Earth dam contributes to the local ecosystem while providing recreational opportunities for the community. However, the lack of recent inspections and condition assessments highlight the need for ongoing monitoring and maintenance to ensure the safety and sustainability of this valuable resource.
Year Completed |
1968 |
Dam Length |
747 |
Dam Height |
10 |
River Or Stream |
JIM CREEK |
Primary Dam Type |
Earth |
Surface Area |
7 |
Hydraulic Height |
10 |
Drainage Area |
2 |
Nid Storage |
52 |
Structural Height |
10 |
Hazard Potential |
Low |
Nid Height |
10 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
Banner Lake #1