Nelson Dam No. 1 dam
Nelson Dam No. 1
Nelson Dam No. 1 is a privately owned earth dam located in Mosby, Missouri, along TR-Carroll Creek. Built in 1994 for grade stabilization purposes, this 32-foot tall structure has a maximum storage capacity of 94 acre-feet and serves to protect the surrounding area from potential erosion and flooding. With a surface area of 5 acres and a drainage area of 480 acres, the dam plays a crucial role in managing water flow and ensuring the stability of the ecosystem.
Despite being classified as having a low hazard potential, Nelson Dam No. 1 is considered to have a moderate risk rating due to its location and the potential consequences of failure. The dam features an uncontrolled spillway with a width of 25 feet and no outlet gates. While it has not been inspected recently and is not currently regulated by the state, the dam remains an important infrastructure for water resource management in the area. The risk management measures and emergency action plan for Nelson Dam No. 1 are not specified in the data provided, highlighting the need for continued monitoring and maintenance to ensure its safety and effectiveness in the face of changing climate conditions.
As a significant component of the local water infrastructure, Nelson Dam No. 1 showcases the importance of earth dams in maintaining water resources and protecting against the impacts of climate change. The dam's location in a moderate risk area underscores the need for ongoing assessment and planning to address potential hazards and ensure its continued functionality. With its role in grade stabilization and water storage, Nelson Dam No. 1 serves as a vital asset for the community, highlighting the intersection of water resource management and climate resilience in the face of an uncertain future.
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 Nelson Dam No. 1 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Little Platte River Near Plattsburg | 6 cfs | → |
| Little Platte River At Smithville | 20 cfs | → |
| Crooked River Near Richmond | 55 cfs | → |
| Little Blue River Near Lake City | 250 cfs | → |
| Platte River At Sharps Station | 12,700 cfs | → |
| Missouri River At Kansas City | 71,700 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Nelson Dam No. 1.
Track Nelson Dam No. 1 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 Nelson Dam No. 1
Where does the data for Nelson Dam No. 1 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 Nelson Dam No. 1.