East Aldrich Subwatershed B-6603 dam
East Aldrich Subwatershed B-6603
East Aldrich Subwatershed B-6603 in Danbury, Iowa, is a critical water resource managed by the USDA NRCS, with a dam completed in 1954 primarily for fire protection, stock, and small fish pond purposes. This earth dam stands at 35 feet in height, providing a storage capacity of 138 acre-feet and covering an 8-acre surface area. Despite its low hazard potential, the subwatershed is regulated and permitted by the Iowa DNR, ensuring regular inspections and enforcement to maintain its structural integrity.
Located in Ida County, the subwatershed's Aldrich Creek tributary plays a vital role in flood risk reduction for the surrounding area. With a drainage area of 0.73 square miles, the dam controls the flow of water and manages the risk of inundation, contributing to a moderate risk assessment score of 3. Although the condition assessment is currently not rated, the subwatershed's management measures and emergency protocols are in place to address any potential issues and ensure the safety of the community.
As part of the Rock Island District, East Aldrich Subwatershed B-6603 serves as a prime example of sustainable water resource management in the region. With its strategic design by the Natural Resources Conservation Service and state-regulated operations, the subwatershed showcases a collaborative effort to protect the environment, support local agriculture, and mitigate the impacts of climate change on water resources.
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 East Aldrich Subwatershed B-6603 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Little Sioux River At Correctionville | 1,610 cfs | → |
| Maple River At Mapleton | 314 cfs | → |
| West Fork Ditch At Hornick | 80 cfs | → |
| North Raccoon River Near Sac City | 439 cfs | → |
| Little Sioux River Near Turin | 1,910 cfs | → |
| Monona-Harrison Ditch Near Turin | 387 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near East Aldrich Subwatershed B-6603.
Boat launches
Track East Aldrich Subwatershed B-6603 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 East Aldrich Subwatershed B-6603
Where does the data for East Aldrich Subwatershed B-6603 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 East Aldrich Subwatershed B-6603.