Iowa Noname35 dam
Iowa Noname35
Iowa Noname35 is a significant earth dam located in Sioux City, Iowa, designed by the USDA NRCS and completed in 1967 for fire protection, stock, and small fish pond purposes. With a dam height of 35 feet and a length of 952 feet, it provides a storage capacity of 147 acre-feet and covers a surface area of 5.1 acres. The dam is regulated by the Iowa DNR and is inspected, permitted, and enforced by state authorities, ensuring its safety and compliance with regulations.
Situated on the TR-West Branch Perry Creek, Iowa Noname35 plays a crucial role in flood risk reduction in the area, with a moderate risk assessment rating. The dam has a significant hazard potential and is under state jurisdiction for permitting, inspection, and enforcement. Although the condition assessment is currently not rated, the dam's purpose and design reflect its importance in water resource management for the local community. With its strategic location and design features, Iowa Noname35 stands as a key infrastructure for water conservation and climate resilience in Plymouth County, Iowa.
Owned by the local government, Iowa Noname35 is an essential asset for water management in the region, serving multiple purposes and providing necessary storage capacity. As part of the Omaha District, the dam contributes to fire protection, stock maintenance, and small fish pond activities while also serving as a flood risk reduction measure. With its regulated status and compliance with state permitting and inspection requirements, Iowa Noname35 exemplifies the commitment to water resource stewardship and climate adaptation 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 Iowa Noname35 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Perry Creek Near Milnerville | 25 cfs | → |
| Floyd River At James | 323 cfs | → |
| Missouri River At Sioux City | 26,000 cfs | → |
| Big Sioux River At Akron | 1,120 cfs | → |
| Omaha Cr At Homer | 31 cfs | → |
| Vermillion River Nr Vermillion Sd | 42 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Iowa Noname35.
Boat launches
- 220th Street Plymouth County
- Bacon Creek Sioux City
- Scenic Park S Sioux City
- 180th Street Plymouth County
- State Highway 3 Plymouth County
- Crystal Cove Park
Track Iowa Noname35 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 Iowa Noname35
Where does the data for Iowa Noname35 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 Iowa Noname35.