Gnirk Family Trust dam
Gnirk Family Trust
The Gnirk Family Trust in Mauston, Wisconsin, is a privately owned earth dam constructed in 1969 for the primary purpose of flood risk reduction along the TR Brewer Creek. With a structural height of 27 feet and a length of 310 feet, the dam has a storage capacity of 25 acre-feet and a drainage area of 0.2 square miles. Despite being classified as low hazard potential, the dam is regularly inspected by the Wisconsin Department of Natural Resources and has a fair condition assessment as of October 2019.
Located in Juneau County, the Gnirk Family Trust dam plays a crucial role in managing water resources and minimizing the risk of flooding in the surrounding area. With a low hazard potential and a moderate risk assessment rating of 3, the dam provides essential flood protection for the community. In the event of an emergency, the dam's emergency action plan and inundation maps ensure that appropriate measures are in place to safeguard lives and property.
Managed by the private owners, the Gnirk Family Trust dam continues to be a vital infrastructure for flood risk reduction in Wisconsin. With its uncontrolled spillway and a maximum discharge of 180 cubic feet per second, the dam serves as a key component of the local water resource management system. Despite its age, the dam's condition remains fair, and regular inspections and maintenance uphold its functionality and reliability in protecting the community from potential flooding events.
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 Gnirk Family Trust -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Lemonweir River At New Lisbon | 326 cfs | → |
| Yellow River At Necedah | 253 cfs | → |
| Kickapoo River At State Highway 33 At Ontario | 149 cfs | → |
| Wisconsin River Near Wisconsin Dells | 9,040 cfs | → |
| Kickapoo River At La Farge | 250 cfs | → |
| La Crosse River At Sparta | 209 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Gnirk Family Trust.
Boat launches
- Beach Street 199, Mauston
- Little Yellow River/Wisconsin River -- Access
- Field Veterans Memorial Lake Boat Ramp
- Dutch Hollow Lake -- Access Off Dutch Hollow Road
- Dutch Hollow Lake -- Access Nr Auble Landing Rd
- Castle Rock Lake -- County Park Access (Juneau Co)
Campgrounds
- Schultz City Park
- Elroy Campground
- Riverside Park - New Lisbon
- Kennedy County Park
- Kennedy Park
- Wonewoc Legion Park
Paddle runs
- Honey Creek (County Road Y On The Southern Bank) To The State Route 130 Highway Bridge Crossing At Lone Rock
- Lone Rock To The Confluence Of The Green And Wisconsin Rivers
More reservoirs
Track Gnirk Family Trust 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 Gnirk Family Trust
Where does the data for Gnirk Family Trust 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 Low 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 Gnirk Family Trust.