Smothers Dam dam
Smothers Dam
Smothers Dam is a privately-owned structure located in Riverside, Iowa, along the TR-North English River. Built in 1978 by the USDA NRCS, this earth dam stands at a height of 37 feet and stretches 310 feet in length, with a storage capacity of 42 acre-feet. Its primary purpose is for fire protection, stock, or as a small fish pond, serving the local community while also regulating the water flow in the area.
Managed by the Iowa Department of Natural Resources, Smothers Dam is regulated and inspected regularly to ensure its safety and functionality. With a low hazard potential and a moderate risk assessment rating, this dam plays a crucial role in managing water resources in the region. Despite not being rated for its condition, Smothers Dam continues to serve its purpose effectively, contributing to the overall water management efforts in Iowa.
For water resource and climate enthusiasts, Smothers Dam presents an interesting case study of a privately-owned structure that plays a significant role in water management and regulation. With its location along the North English River and its design for fire protection and stock purposes, this dam showcases the importance of proper infrastructure in safeguarding water resources and supporting local communities. Through regular inspections and regulatory oversight, Smothers Dam continues to be a valuable asset in managing water flow and storage in the area.
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 Smothers Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Big Bear Creek At Ladora | 122 cfs | → |
| Iowa River At Marengo | 2,410 cfs | → |
| Iowa River Near Belle Plaine | 2,050 cfs | → |
| Walnut Creek Near Hartwick | 33 cfs | → |
| North Skunk River Near Sigourney | 319 cfs | → |
| Clear Creek Near Oxford | 26 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Smothers Dam.
Boat launches
- 216th Street Iowa County
- State Highway 21 Iowa County
- 360th Street Tama County
- County Road V5g Keokuk County
- W15 / 330th Avenue Keokuk County
- Mahaska County
Campgrounds
- Lake Iowa County Park
- Belva - Deer Rec Area
- Yenruogis County Park
- Diamond Lake County Park
- Hannen County Park
- Chacauqua River Access
More reservoirs
Track Smothers 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 Smothers Dam
Where does the data for Smothers 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 Smothers Dam.