South 6th St Stormwater Detention Basin dam
South 6th St Stormwater Detention Basin
Located in Marshalltown, Iowa, the South 6th St Stormwater Detention Basin is a vital structure designed by VEENSTRA & KIMM to assist in flood risk reduction along Anson Creek. Completed in 1997, this earth dam stands at a height of 9 feet and spans a length of 220 feet, with a capacity to store 69 acre-feet of water. With a primary purpose of flood risk reduction, this basin plays a crucial role in managing stormwater during heavy rainfall events.
Owned and regulated by the local government, the South 6th St Stormwater Detention Basin is under the jurisdiction of the Iowa Department of Natural Resources. Despite its low hazard potential and moderate risk assessment, the structure has not been rated for its condition assessment. However, it serves as a key asset in protecting the surrounding area from potential flooding, with a normal storage capacity of 32 acre-feet and a surface area of 4.3 acres.
With its uncontrolled spillway type and location in a designated flood risk area, the South 6th St Stormwater Detention Basin stands as a critical infrastructure for water resource and climate enthusiasts. As a key component in the flood risk reduction strategy for Marshalltown, this earth dam plays a crucial role in managing stormwater flow and protecting the community from potential flood events along Anson Creek.
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 South 6th St Stormwater Detention Basin -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Timber Creek Near Marshalltown | 94 cfs | → |
| Iowa River At Marshalltown | 815 cfs | → |
| South Fork Iowa River Ne Of New Providence | 190 cfs | → |
| Richland Creek Near Haven | 38 cfs | → |
| Indian Creek Near Mingo | 211 cfs | → |
| South Skunk River At Colfax | 631 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near South 6th St Stormwater Detention Basin.
Boat launches
- Marsh Avenue Marshall County
- C Avenue Tama County
- Bb Avenue Tama County
- Richards Drive 2165, Tama County
- Arney Avenue Marshall County
- Atv Trail Tama
Track South 6th St Stormwater 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 South 6th St Stormwater Detention Basin
Where does the data for South 6th St Stormwater 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 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 South 6th St Stormwater Detention Basin.