Amana Millrace Diversion Dam dam
Amana Millrace Diversion Dam
The Amana Millrace Diversion Dam, located in Iowa along the Iowa River, serves as a vital piece of infrastructure for hydroelectric purposes. Owned privately, this dam is regulated by the Iowa Department of Natural Resources, ensuring that it meets state permitting, inspection, and enforcement requirements. The dam stands at a height of 9 feet and has a storage capacity of 165 acre-feet, playing a crucial role in water resource management in the area.
This diversion dam, with a low hazard potential and a current condition assessment of "Not Rated," has not been modified in recent years. It does not have a designated primary dam type or spillway type and does not feature any outlet gates. Despite its basic structure, the Amana Millrace Diversion Dam contributes significantly to the region's water supply and energy production. As a key component of the local water management system, it plays a vital role in maintaining the ecological balance and supporting the surrounding communities.
While the dam lacks certain detailed data points such as completion year and inspection frequency, its presence is essential for maintaining water flow and supporting hydroelectric operations in the area. With its historical significance and ongoing role in water resource management, the Amana Millrace Diversion Dam remains a notable structure for water resource and climate enthusiasts to study and appreciate in the Iowa landscape.
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 Amana Millrace Diversion Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Iowa River At Marengo | 3,750 cfs | → |
| Big Bear Creek At Ladora | 508 cfs | → |
| Clear Creek Near Oxford | 103 cfs | → |
| Iowa River Near Belle Plaine | 3,140 cfs | → |
| Salt Creek Near Elberon | 203 cfs | → |
| Cedar River At Cedar Rapids | 6,180 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Amana Millrace Diversion Dam.
Boat launches
- 216th Street Iowa County
- State Highway 21 Iowa County
- J Avenue Northeast 201, Cedar Rapids
- Poplar Avenue Northeast Big Grove Township
- Mehaffey Bridge Road Northeast , 52333 Iowa
- Falcon Lane Big Grove Township
Track Amana Millrace Diversion 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 Amana Millrace Diversion Dam
Where does the data for Amana Millrace Diversion 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 Amana Millrace Diversion Dam.