Nutt Hollow Subwatershed Site 2-6161 dam
Nutt Hollow Subwatershed Site 2-6161
Nutt Hollow Subwatershed Site 2-6161, located in Monona County, Iowa, is a local government-owned earth dam constructed in 1958 by the USDA NRCS for fire protection, stock, and small fish pond purposes. This dam, situated on TR- GARD CREEK, has a height of 18 feet and a length of 380 feet, providing a storage capacity of 55 acre-feet. With a low hazard potential and a moderate risk assessment rating, this dam serves as a vital infrastructure for flood risk reduction within the region.
Managed by the Iowa Department of Natural Resources, Nutt Hollow Subwatershed Site 2-6161 is subject to state regulation, permitting, inspection, and enforcement to ensure its structural integrity and functionality. Despite being not rated in terms of condition assessment, this dam has a normal storage capacity of 11 acre-feet, covering a surface area of 3 acres within its drainage area of 0.68 square miles. As a key component of the local water resource management system, this dam plays a crucial role in mitigating potential flood risks and enhancing water availability for various purposes.
With a spillway type of uncontrolled and no outlet gates, Nutt Hollow Subwatershed Site 2-6161 is designed to manage water flow efficiently during periods of heavy rainfall or flooding. Although the dam has not been modified in recent years and lacks an emergency action plan, it remains a significant asset for the community. As water resource and climate enthusiasts, understanding the importance of structures like this dam in sustainable water management efforts is essential for ensuring the resilience of our ecosystems and communities in the face of climate change challenges.
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 Nutt Hollow Subwatershed Site 2-6161 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Maple River At Mapleton | 264 cfs | → |
| Little Sioux River Near Turin | 1,680 cfs | → |
| Monona-Harrison Ditch Near Turin | 187 cfs | → |
| West Fork Ditch At Hornick | 80 cfs | → |
| Missouri River At Decatur | 26,300 cfs | → |
| Soldier River At Pisgah | 125 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Nutt Hollow Subwatershed Site 2-6161.
Boat launches
Campgrounds
Track Nutt Hollow Subwatershed Site 2-6161 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 Nutt Hollow Subwatershed Site 2-6161
Where does the data for Nutt Hollow Subwatershed Site 2-6161 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 Nutt Hollow Subwatershed Site 2-6161.