Grassy Creek Watershed Dam G- 56 dam
Grassy Creek Watershed Dam G- 56
Grassy Creek Watershed Dam G-56, located in Ewing, Missouri, was completed in 1990 with the primary purpose of flood risk reduction. Managed by the local government and designed by USDA NRCS, this earth dam stands at a height of 32 feet and has a hydraulic height of 21 feet. With a storage capacity of 63 acre-feet and a drainage area of 211.2 square miles, the dam serves multiple purposes including fire protection, stock or small fish pond, fish and wildlife pond, and flood risk reduction.
This low hazard potential dam on Grassy Creek boasts a spillway width of 30 feet and a maximum discharge capacity of 168 cubic feet per second. Although not rated for condition assessment, the dam has been inspected periodically, with the last inspection conducted in September 1999. The risk assessment for this structure is moderate, with a DSAC assigned date and no documented emergency action plan currently in place. Despite its modest surface area of 7 acres, Grassy Creek Watershed Dam G-56 plays a crucial role in managing water resources in the Lewis County area.
Overall, Grassy Creek Watershed Dam G-56 is a vital asset for flood risk reduction in the region, designed and managed by USDA NRCS and local government entities. With its strategic location on Grassy Creek, this earth dam ensures the safety of surrounding communities and wildlife by providing essential storage and drainage capabilities. While the dam's condition assessment is pending, its low hazard potential and moderate risk assessment highlight the importance of continued monitoring and maintenance to uphold its functionality and resilience in the face of changing climate conditions.
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 Grassy Creek Watershed Dam G- 56 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Wyaconda River Above Canton | 19 cfs | → |
| South Fabius River Near Taylor | 36 cfs | → |
| North River At Palmyra | 6 cfs | → |
| Bear Creek Near Marcelline | 17 cfs | → |
| Salt River Near Shelbina | 176 cfs | → |
| Fox River At Wayland | 53 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Grassy Creek Watershed Dam G- 56.
Track Grassy Creek Watershed Dam G- 56 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 Grassy Creek Watershed Dam G- 56
Where does the data for Grassy Creek Watershed Dam G- 56 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 Grassy Creek Watershed Dam G- 56.