Vander Zyl Dam dam
Vander Zyl Dam
Vander Zyl Dam, located in Jasper County, Iowa, is a privately owned earth dam completed in 1994 for fire protection, stock, and small fish pond purposes. With a dam height of 37 feet and a length of 430 feet, the dam has a storage capacity of 158 acre-feet and covers a surface area of 11.2 acres. It is situated on Turner Creek and is regulated by the Iowa Department of Natural Resources.
Despite its low hazard potential and moderate risk assessment, Vander Zyl Dam has not been rated for its condition assessment. The dam does not have controlled spillways or outlet gates, making it an uncontrolled spillway type structure. With its location in a rural area, the dam serves as an important resource for the surrounding community for water storage and fire protection purposes.
Overall, Vander Zyl Dam plays a vital role in water resource management in the area, providing necessary storage capacity for agricultural and fire protection needs. As a privately owned structure, it is subject to state regulations and inspections to ensure its safety and functionality. Water resource and climate enthusiasts can appreciate the significance of this dam in sustaining the local ecosystem and supporting community resilience in times of need.
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 Vander Zyl Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Richland Creek Near Haven | 34 cfs | → |
| Timber Creek Near Marshalltown | 88 cfs | → |
| South Skunk River At Colfax | 631 cfs | → |
| Walnut Creek Near Hartwick | 33 cfs | → |
| South Skunk River Near Oskaloosa | 1,230 cfs | → |
| Des Moines River Near Pella | 6,780 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Vander Zyl Dam.
Boat launches
- Jade Street Jasper County
- Rock Creek East Street Jasper County
- Atv Trail Tama
- C Avenue Tama County
- 198th Place Marion County
- Marion County
Track Vander Zyl 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 Vander Zyl Dam
Where does the data for Vander Zyl 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 Vander Zyl Dam.