Grace And Hawk No 1 dam
Grace And Hawk No 1
Grace and Hawk No 1, located in Alanthus, Missouri, is a privately owned earth dam serving the primary purpose of grade stabilization along the TR-West Fork Grand River. Built in 1992 by the Rock Island District of the US Army Corps of Engineers, this 27-foot high structure spans 460 feet and has a storage capacity of 29 acre-feet. Despite its low hazard potential, the dam is considered to have a moderate risk level, prompting the need for ongoing risk management measures.
With a drainage area of 102.4 square miles, Grace and Hawk No 1 plays a crucial role in regulating water flow and protecting the surrounding area from potential flooding. The dam features an uncontrolled spillway with a width of 35 feet to manage excess water during periods of high discharge. Although the dam has not been inspected recently and is currently rated as "not assessed," its design and construction meet operational standards for grade stabilization purposes.
While there are no associated structures or regulatory agencies overseeing its operation, Grace and Hawk No 1 remains an essential component of the local water resource infrastructure in Worth County. As climate change continues to impact precipitation patterns and water levels in the region, the proper maintenance and monitoring of this dam are essential to ensuring its effectiveness in mitigating flood risks and safeguarding the community against potential hazards.
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 Grace And Hawk No 1 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| East Fork 102 River At Bedford | 0 cfs | → |
| One Hundred And Two River At Maryville | 1,750 cfs | → |
| Nodaway River Near Burlington Jct | 2,430 cfs | → |
| Nodaway River At Clarinda | 1,080 cfs | → |
| East Fork Big Creek Near Bethany | 411 cfs | → |
| Nodaway River Near Graham | 3,620 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Grace And Hawk No 1.
Boat launches
Track Grace And Hawk 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 Grace And Hawk No 1
Where does the data for Grace And Hawk 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 Grace And Hawk No 1.