Big Park Watershed Site D-1 dam
Big Park Watershed Site D-1
Big Park Watershed Site D-1 is a vital water resource in Crawford County, Iowa, designed by the USDA NRCS with a primary purpose of fire protection, stock, or small fish pond, as well as flood risk reduction. This earth dam, completed in 1960, stands at a height of 43 feet and has a storage capacity of 68 acre-feet. Situated along the TR-Boyer River, this dam covers a surface area of 4 acres and serves a drainage area of 0.42 square miles.
Managed by the Iowa DNR, Big Park Watershed Site D-1 is regulated and permitted by the state, with inspections and enforcement in place to ensure its safety and functionality. With a low hazard potential and a moderate risk assessment rating of 3, this dam plays a crucial role in water management and protection in the region. While its condition is currently not rated, ongoing monitoring and risk management measures are in place to safeguard this important water infrastructure.
Located in Dow City, Iowa, this watershed site is a testament to the collaborative efforts of local government and federal agencies in safeguarding water resources for various purposes, including fire protection, stock, and flood risk reduction. With a focus on sustainability and risk management, Big Park Watershed Site D-1 stands as a vital component of the water infrastructure in Crawford County, contributing to the overall resilience and conservation of 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 Big Park Watershed Site D-1 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Soldier River At Pisgah | 151 cfs | → |
| Boyer River At Logan | 484 cfs | → |
| Maple River At Mapleton | 337 cfs | → |
| Little Sioux River Near Turin | 1,870 cfs | → |
| Monona-Harrison Ditch Near Turin | 330 cfs | → |
| West Nishnabotna River At Hancock | 318 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Big Park Watershed Site D-1.
Track Big Park Watershed Site D-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 Big Park Watershed Site D-1
Where does the data for Big Park Watershed Site D-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 Big Park Watershed Site D-1.