Glen Hills 8 Reservoir Report
Nearby: Glen Hills 7 Glen Hills 5
Last Updated: December 5, 2025
Glen Hills 8, located in St.
°F
°F
mph
Wind
%
Humidity
Summary
Croix, Wisconsin, is a vital flood risk reduction structure designed by the USDA NRCS and completed in 1974. This earth dam stands at a height of 30 feet with a hydraulic height of 16 feet, serving the primary purpose of flood risk reduction along with other functions such as debris control and recreation. With a storage capacity of 238 acre-feet and a drainage area of 2 square miles, Glen Hills 8 plays a crucial role in managing water resources in the area.
The dam, part of the Detroit District, has a significant hazard potential and undergoes inspections every 3 years to ensure its satisfactory condition. With a moderate risk assessment rating, the structure is regulated, permitted, inspected, and enforced by the Wisconsin Department of Natural Resources. Despite its age, Glen Hills 8 continues to meet safety guidelines and provides essential flood protection to the surrounding community. This earth dam stands as a testament to effective water resource management and climate resilience in the region.
As a key component in the watershed, Glen Hills 8 has a spillway type of uncontrolled and a maximum discharge of 65 cubic feet per second. It covers a surface area of 15 acres and has a normal storage capacity of 43 acre-feet. With Sean P. Duffy as the representative for the area, this dam serves as a crucial infrastructure for water management, highlighting the importance of sustainable practices in safeguarding communities from flooding and ensuring long-term water resource sustainability.
Years Modified |
2002 - Other |
Year Completed |
1974 |
Dam Length |
398 |
Dam Height |
30 |
River Or Stream |
Tributary to Sandy Creek |
Primary Dam Type |
Earth |
Surface Area |
15 |
Hydraulic Height |
16 |
Drainage Area |
2 |
Nid Storage |
238 |
Structural Height |
30 |
Hazard Potential |
Significant |
Nid Height |
30 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Hay River At Wheeler
|
235cfs |
Eau Galle River At Spring Valley
|
16cfs |
Red Cedar River At Menomonie
|
599cfs |
Red Cedar River Near Colfax
|
593cfs |
Willow River @ Willow R State Park Nr Burkhardt
|
130cfs |
St. Croix River At St. Croix Falls
|
1470cfs |
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.
Area Campgrounds
| Location | Reservations | Toilets |
|---|---|---|
Prairieview Campground
|
||
Glen Hills Park - Picnic Area Campground
|
||
Glen Hills Park Campground
|
||
Glen Hills County Park
|
||
Clear Lake City Park
|
Glen Hills 8