Grant Lake Dam - South dam
Grant Lake Dam - South
Grant Lake Dam - South, located in Platte City, Missouri, was completed in 1956 for the primary purpose of flood risk reduction along the TR-Platte River. This private-owned earth dam stands at a height of 20 feet and has a storage capacity of 86 acre-feet, with a normal storage level of 40 acre-feet. The dam also serves purposes such as debris control, fire protection, and recreation, making it a multifunctional structure in the region.
Despite its important role in flood risk management, Grant Lake Dam - South has a high hazard potential and is currently not rated for its condition. As a non-Federal structure, it is not regulated by the state or inspected regularly. The dam's emergency action plan status, risk assessment, and inundation maps preparedness are also unknown, raising concerns about the readiness for potential emergencies. With its location in a high-risk area, it is crucial for stakeholders to prioritize the assessment and maintenance of this vital infrastructure to ensure the safety of surrounding communities and the sustainability of water resources in the region.
With its strategic location in Buchanan County, Missouri, Grant Lake Dam - South plays a crucial role in managing flood risks along the TR-Platte River and supporting various activities such as recreation and stock pond management. As climate change continues to impact water resources and weather patterns, the importance of maintaining and enhancing infrastructure like this dam becomes even more evident. By prioritizing inspections, risk assessments, and emergency preparedness measures, stakeholders can ensure the long-term resilience of Grant Lake Dam - South and its ability to support water resource management and climate adaptation efforts 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 Grant Lake Dam - South -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Platte River Near Agency | 13,800 cfs | → |
| Missouri River At St. Joseph | 51,700 cfs | → |
| Platte River At Sharps Station | 14,200 cfs | → |
| Little Platte River At Smithville | 32 cfs | → |
| Little Platte River Near Plattsburg | 10 cfs | → |
| Stranger C Nr Potter | 199 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Grant Lake Dam - South.
Track Grant Lake Dam - South 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 Grant Lake Dam - South
Where does the data for Grant Lake Dam - South 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 High 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 Grant Lake Dam - South.