Glen Hills 8 dam
Glen Hills 8
Glen Hills 8, located in St. 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.
Dam data reference
Condition Assessment
- Satisfactory
- No 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.
- 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.
- 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.
Hazard Potential Classification
- High
- Dams 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, environmental 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.
Plan around the weather
Same NOAA / yr.no feed Snoflo's iOS app uses. Watch the precipitation column on the meteogram -- rain on the basin upstream typically lifts inflow 24-72 hours later.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day temperature & precipitation
Daily temperatures, snow, and rain projected over the next two weeks.
Nearby streamflow gauges
USGS streamgauges around Glen Hills 8 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Hay River At Wheeler | 348 cfs | → |
| Eau Galle River At Spring Valley | 19 cfs | → |
| Red Cedar River At Menomonie | 1,280 cfs | → |
| Red Cedar River Near Colfax | 850 cfs | → |
| Willow River @ Willow R State Park Nr Burkhardt | 130 cfs | → |
| St. Croix River At St. Croix Falls | 3,830 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Glen Hills 8.
Boat launches
- Glen Lake -- Access
- Pine Lake -- Access
- Clear Lake -- Access Nr 7th And D
- Prairie Farm Flowage -- Access
- Magnor Lake -- Access
- Black Brook Flowage -- Access
Campgrounds
- Prairieview Campground
- Glen Hills Park - Picnic Area Campground
- Glen Hills Park Campground
- Glen Hills County Park
- Clear Lake City Park
- Pioneer Park - Prairie Farm
More reservoirs
Track Glen Hills 8 in the Snoflo app
Save this dam as a favorite and get the local NOAA / yr.no forecast plus regional flow context wherever you are.
About Glen Hills 8
Where does the data for Glen Hills 8 come from?
Structural and regulatory data come from the U.S. Army Corps of Engineers' National Inventory of Dams (NID). Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.
How often is the report updated?
NID structural data refreshes annually as the Corps publishes updated assessments. The weather forecast refreshes throughout the day.
What does the Significant hazard rating mean?
The Corps of Engineers' hazard potential classification grades probable consequences if the dam fails: High = probable loss of human life; Significant = no probable loss of human life but possible economic loss / environmental damage; Low = no probable loss of human life, only minor economic / environmental losses. See the Dam Data Reference card above for the full definitions.
What's "% of normal"?
The current storage value compared to the historical average storage on this calendar day. 100% = right on average; values above 100% mean above-normal storage (wet year); values below mean below-normal (dry year or drought).
Can I get alerts when storage crosses a threshold?
Yes -- alerts are managed in the Snoflo iOS app. Favorite this dam, set a threshold, and you'll get a push the moment conditions cross.
Other water bodies near here
Snoflo-tracked reservoirs and dams within driving distance of Glen Hills 8.