Knottnerus dam
Knottnerus
Knottnerus is a privately owned dam located in Chouteau, Montana, along TR-Little Sandy Creek. Built in 1965, this earth dam stands at 18 feet tall and has a storage capacity of 57 acre-feet. Its primary purpose is for fire protection, stock, or as a small fish pond. The dam is regulated by the Montana Department of Natural Resources and Conservation (DNRC) and is inspected, permitted, and enforced by the state.
With a low hazard potential and a "Not Rated" condition assessment, Knottnerus has not been evaluated for its current structural integrity. Despite this, its location in the HOLE IN THE WALL LANDINGREC area makes it a vital resource for water storage and protection in the region. Its maximum discharge capacity is 337 cubic feet per second, ensuring adequate water management during times of heavy rainfall or flooding events. While the dam has not been assessed for emergency action planning or risk management measures, its presence plays a crucial role in maintaining water resources in the surrounding area.
As water resource and climate enthusiasts, understanding the significance of dams like Knottnerus in water management is essential. With its storage capacity, structural design, and regulatory oversight, Knottnerus serves a vital role in the local ecosystem and economy. Monitoring and maintaining this earth dam will be crucial in safeguarding water resources for both human and environmental needs in Chouteau, Montana.
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 Knottnerus -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Missouri River At Virgelle Mt | 7,010 cfs | → |
| Teton River At Loma Mt | 26 cfs | → |
| Marias River Near Loma Mt | 504 cfs | → |
| Missouri River At Fort Benton Mt | 6,420 cfs | → |
| Big Sandy Creek Near Havre Mt | 4 cfs | → |
| Judith River Nr Mouth | 425 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Knottnerus.
Boat launches
- Little Sandy Coulee Rec Site
- Coal Banks Landing
- Lone Tree Coulee
- Monroe Island
- Eagle Creek Rec Site
- Hole In The Wall Rec Site
Campgrounds
- Little Sandy Coulee Rec Site
- Coal Banks Landing
- Lone Tree Coulee
- Monroe Island
- Eagle Creek Rec Site
- Hole In The Wall Rec Site
Fishing spots
More reservoirs
Track Knottnerus 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 Knottnerus
Where does the data for Knottnerus 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 Knottnerus.