Walling Subwatershed Sta 31+73 #1 dam
Walling Subwatershed Sta 31+73 #1
Located in Woodbury County, Iowa, the Walling Subwatershed Sta 31+73 #1 is a local government-owned earth dam designed by the USDA NRCS for fire protection, stock, or small fish pond purposes. Completed in 1953, this dam stands at a height of 28 feet and has a storage capacity of 31 acre-feet, serving to reduce flood risks in the area. With a surface area of 3.3 acres and a drainage area of 0.11 square miles, this structure plays a crucial role in managing water resources in the region.
Situated along the TR-Little Sioux River, the Walling Subwatershed Sta 31+73 #1 dam has a low hazard potential and is currently rated as "Not Rated" in terms of its condition assessment. While it does not have a designated emergency action plan (EAP) or updated inspection frequency, the dam's risk assessment is moderate. With the Iowa DNR overseeing state regulation, permitting, inspection, and enforcement, this structure remains an essential component of water resource management in the area, contributing to overall climate resilience and safety for the community.
Despite its simple design and relatively small size, the Walling Subwatershed Sta 31+73 #1 dam serves as a vital piece of infrastructure for fire protection, stock, and flood risk reduction. With a focus on maintaining water quality, managing potential hazards, and meeting regulatory standards, this dam plays a significant role in ensuring the sustainability of water resources in Woodbury County, Iowa. As climate change continues to impact the region, structures like these will be essential for adapting to shifting environmental conditions and protecting the local ecosystem.
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 Walling Subwatershed Sta 31+73 #1 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Little Sioux River At Correctionville | 1,400 cfs | → |
| Maple River At Mapleton | 264 cfs | → |
| West Fork Ditch At Hornick | 80 cfs | → |
| Little Sioux River Near Turin | 1,680 cfs | → |
| Monona-Harrison Ditch Near Turin | 187 cfs | → |
| Floyd River At James | 323 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Walling Subwatershed Sta 31+73 #1.
Boat launches
Track Walling Subwatershed Sta 31+73 #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 Walling Subwatershed Sta 31+73 #1
Where does the data for Walling Subwatershed Sta 31+73 #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 Walling Subwatershed Sta 31+73 #1.