Grubbs Dam dam
Grubbs Dam
Grubbs Dam, located in Adair County, Iowa, serves multiple purposes including fire protection, stock watering, and as a small fish pond. Constructed in 2000 by the USDA NRCS, this private dam stands at a height of 25 feet and has a length of 635 feet, providing a storage capacity of 131 acre-feet. The dam is primarily regulated by the Iowa Department of Natural Resources and is subject to state permitting, inspection, and enforcement.
With a surface area of 10.1 acres and a drainage area of 0.31 square miles, Grubbs Dam plays a crucial role in managing water resources in the region. The dam's spillway is uncontrolled, and it poses a low hazard potential with a moderate risk assessment rating. The dam's condition is currently not rated, but it undergoes regular state inspections to ensure its structural integrity and safety.
Enthusiasts of water resources and climate will appreciate Grubbs Dam for its contribution to local water management and conservation efforts. As a key feature in the TR-West Fork Middle Nodaway River system, this earth dam provides essential water storage for various uses while also serving as a habitat for aquatic life. With its low hazard potential and moderate risk assessment, Grubbs Dam stands as a testament to responsible water infrastructure development and management in Iowa.
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 Grubbs Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Middle Raccoon River At Panora | 243 cfs | → |
| Middle Raccoon River Near Bayard | 261 cfs | → |
| South Raccoon River At Redfield | 692 cfs | → |
| East Nishnabotna River Near Atlantic | 226 cfs | → |
| Raccoon River At Van Meter | 2,970 cfs | → |
| North Raccoon River Near Jefferson | 1,270 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Grubbs Dam.
Track Grubbs 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 Grubbs Dam
Where does the data for Grubbs 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 Grubbs Dam.