Norall No. 1 Reservoir Report
Nearby: Brown Shearing Pen
Last Updated: December 8, 2025
Norall No.
°F
°F
mph
Wind
%
Humidity
Summary
1 is a privately owned earth dam located on Dry Willow Creek in Campbell County, Wyoming. The dam stands at a height of 38 feet with a hydraulic height of 29 feet and a length of 550 feet. Its primary purpose is for water supply, with a storage capacity of 271 acre-feet and a surface area of 24 acres. The dam has a low hazard potential and is classified as being in fair condition as of the last inspection in August 2018.
This dam plays a crucial role in water resource management in the region, serving as a reliable source for the surrounding areas. With a drainage area of 3.3 square miles and a maximum discharge of 1363 cubic feet per second, Norall No. 1 helps regulate water flow and supply in the watershed. Although the dam has not been modified in recent years, it undergoes regular inspections and is equipped with an uncontrolled spillway with a width of 120 feet to manage excess water during peak flows.
Despite its moderate risk assessment, Norall No. 1 remains a vital infrastructure for water supply and climate resilience in the area. With state jurisdiction, regulation, inspection, and enforcement in place, the dam continues to fulfill its intended purpose effectively. As water resource enthusiasts, staying informed about the condition and management of structures like Norall No. 1 is essential for ensuring sustainable water management practices and mitigating potential risks associated with climate variability.
Dam Length |
550 |
Dam Height |
38 |
River Or Stream |
DRY WILLOW CREEK |
Primary Dam Type |
Earth |
Surface Area |
24 |
Hydraulic Height |
29 |
Drainage Area |
3.3 |
Nid Storage |
271 |
Structural Height |
38 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
38 |
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.
Norall No. 1