Allen- Ewing Dam dam
Allen- Ewing Dam
Allen- Ewing Dam, located in Wayne County, Iowa, is a privately owned earth dam with a primary purpose of fire protection, stock, or small fish pond. Completed in 1999 by the USDA NRCS, this dam stands at a height of 35 feet and stretches 632 feet in length, with a storage capacity of 54 acre-feet. Situated in the Rathbun Reservoir area, the dam plays a crucial role in regulating water flow from the TR- West Jackson Creek, helping to manage the drainage area of 0.05 square miles.
Despite being classified as having a low hazard potential, Allen- Ewing Dam is subject to state regulation and inspection by the Iowa DNR. The dam has not been rated for its condition assessment, but it is considered to have a moderate risk level. While the dam does not have a formal Emergency Action Plan (EAP) in place, it meets regulatory guidelines and has emergency contacts on file. With its uncontrolled spillway type and stone core structure, Allen- Ewing Dam serves as a vital component in the water resource management of the area, ensuring the safety and sustainability of the surrounding environment.
For water resource and climate enthusiasts, Allen- Ewing Dam presents an intriguing case study in dam engineering and management. Its location in an ecologically significant area, combined with its role in fire protection and stock pond maintenance, underscores the intersection between human infrastructure and natural ecosystems. With its low hazard potential and moderate risk assessment, the dam poses interesting questions about risk management and emergency preparedness in the face of changing climate patterns. As we continue to grapple with water resource challenges, Allen- Ewing Dam stands as a testament to the importance of sustainable water management practices in safeguarding our environment for future generations.
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 Allen- Ewing Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| South Fork Chariton River Near Promise City | 84 cfs | → |
| Chariton River Near Chariton | 37 cfs | → |
| Chariton River Near Rathbun | 29 cfs | → |
| Thompson River At Davis City | 150 cfs | → |
| Chariton River Near Moulton | 64 cfs | → |
| White Breast Creek Near Dallas | 33 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Allen- Ewing Dam.
⚓ Boat launches
- County Road S70 Appanoose County
- Red Haw Nature Trail Lucas County
- Islandview Place Appanoose County
- Husky Place Appanoose County
- Hornet Place Appanoose County
Track Allen- Ewing Dam 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 Allen- Ewing Dam
Where does the data for Allen- Ewing Dam 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 Allen- Ewing Dam.