Lyle Nelson #6 dam
Lyle Nelson #6
Lyle Nelson #6 is a privately owned earth dam located in McCone, Montana, along the South Fork Rock Creek. Built in 1945 by the USDA NRCS, this dam stands at a height of 14 feet and has a storage capacity of 105 acre-feet, primarily used for fire protection, stock, or small fish pond purposes. With a low hazard potential and a condition assessment of "Not Rated," this dam plays a crucial role in water resource management in the region.
Managed by the Montana Department of Natural Resources and Conservation (DNRC), Lyle Nelson #6 is subject to state regulations, inspections, and enforcement measures to ensure its safety and functionality. Despite being classified as low risk, the dam's emergency action plan status, risk assessment, and other management measures are currently not available. As a key structure in the area, maintaining the integrity and effectiveness of Lyle Nelson #6 is essential for water resource and climate enthusiasts to monitor and support.
Located in a remote area with no designated town, Lyle Nelson #6 serves as a vital asset for the local community and ecosystem. With its historical significance and ongoing role in water management, this dam represents a blend of natural resource conservation and infrastructure development efforts in Montana. For enthusiasts interested in water resource sustainability and climate resilience, understanding the significance and operational aspects of Lyle Nelson #6 is crucial for promoting informed stewardship and decision-making in the region.
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 Lyle Nelson #6 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Nelson Creek Near Van Norman Mt | 0 cfs | → |
| Milk River At Nashua Mt | 77 cfs | → |
| Redwater River At Circle Mt | 14 cfs | → |
| Missouri River Near Wolf Point Mt | 6,880 cfs | → |
| Milk River At Tampico Mt | 39 cfs | → |
| Poplar River Near Poplar Mt | 32 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Lyle Nelson #6.
Track Lyle Nelson #6 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 Lyle Nelson #6
Where does the data for Lyle Nelson #6 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 Lyle Nelson #6.