Lower Beaver Subwtrshd Sta 80+04 #7a dam
Lower Beaver Subwtrshd Sta 80+04 #7a
Lower Beaver Subwatershed Station 80+04 #7a is a crucial water resource structure located in Monona, Iowa, designed by USDA NRCS to serve multiple purposes such as fire protection, stock, small fish pond, and flood risk reduction. This earth dam, completed in 1965, stands at 26 feet tall and spans 679 feet in length, with a storage capacity of 99 acre-feet. Situated on TR-Beaver Creek, this structure covers a drainage area of 1.15 square miles and maintains a normal storage level of 37 acre-feet over a surface area of 6.5 acres.
Owned and regulated by the Iowa Department of Natural Resources, Lower Beaver Subwatershed Station 80+04 #7a is subject to regular state permitting, inspection, and enforcement to ensure its functionality and safety. Classified as having a low hazard potential, this dam is rated as "Not Rated" in terms of condition assessment, with moderate risk due to its location and purpose. While lacking in detailed risk management measures and emergency action planning, this structure plays a vital role in water resource management and protection in the area.
Despite its relatively low hazard potential, the Lower Beaver Subwatershed Station 80+04 #7a remains a critical infrastructure for water storage, flood risk reduction, and wildlife habitat in Monona, Iowa. With its long history of service since 1965, this earth dam continues to be a key element in the local water resource system, serving the community's needs for fire protection, livestock, and small fish pond while actively contributing to the management of flood risks in the region.
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 Lower Beaver Subwtrshd Sta 80+04 #7a -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Little Sioux River Near Turin | 1,740 cfs | → |
| Monona-Harrison Ditch Near Turin | 180 cfs | → |
| Soldier River At Pisgah | 127 cfs | → |
| Maple River At Mapleton | 278 cfs | → |
| Missouri River At Decatur | 26,500 cfs | → |
| West Fork Ditch At Hornick | 80 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Lower Beaver Subwtrshd Sta 80+04 #7a.
Boat launches
Campgrounds
Track Lower Beaver Subwtrshd Sta 80+04 #7a 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 Lower Beaver Subwtrshd Sta 80+04 #7a
Where does the data for Lower Beaver Subwtrshd Sta 80+04 #7a 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 Lower Beaver Subwtrshd Sta 80+04 #7a.