Southridge Road Detention Basin dam
Southridge Road Detention Basin
Southridge Road Detention Basin, located in Marshalltown, Iowa, serves as a crucial flood risk reduction structure along Anson Creek. Constructed in 1996, this Earth-type dam stands at 18 feet tall and spans 800 feet in length, providing a maximum storage capacity of 101 acre-feet. With a drainage area of 2.15 square miles, this significant structure plays a vital role in managing floodwaters and protecting the surrounding area from potential inundation.
Managed by the local government and regulated by the Iowa Department of Natural Resources, Southridge Road Detention Basin has been designed by RUST Environmental Inc. The dam's spillway type is uncontrolled, and its hazard potential is deemed significant, with a moderate risk assessment rating of 3. While the condition assessment is currently marked as "Not Rated," the basin's operational effectiveness in mitigating flood risks highlights its importance in safeguarding the community and environment against water-related hazards.
As an essential component of the region's water resource infrastructure, Southridge Road Detention Basin exemplifies the collaborative efforts between local authorities and regulatory agencies in addressing flood risk reduction. With its strategic location and key role in managing stormwater runoff, this facility stands as a testament to sustainable water resource management practices and the importance of proactive measures in adapting to the impacts of climate change.
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 Southridge Road Detention Basin -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Timber Creek Near Marshalltown | 317 cfs | → |
| Iowa River At Marshalltown | 2,260 cfs | → |
| Richland Creek Near Haven | 69 cfs | → |
| South Fork Iowa River Ne Of New Providence | 504 cfs | → |
| Indian Creek Near Mingo | 933 cfs | → |
| Walnut Creek Near Hartwick | 108 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Southridge Road Detention Basin.
Boat launches
- Marsh Avenue Marshall County
- C Avenue Tama County
- Bb Avenue Tama County
- Richards Drive 2165, Tama County
- Atv Trail Tama
- Arney Avenue Marshall County
Track Southridge Road Detention Basin 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 Southridge Road Detention Basin
Where does the data for Southridge Road Detention Basin 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 Significant 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 Southridge Road Detention Basin.