Dam Report

Lake Panorama Dam dam

Iowa, USA Middle Raccoon River Hazard Significant
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Tonight low
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Dam height
70ft
Hazard rating
Significant
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Lake Panorama Dam -- None dam
Lake Panorama Dam None · Middle Raccoon River
About this dam

Lake Panorama Dam

Lake Panorama Dam in Panora, Iowa, is a privately owned structure that serves multiple purposes, including recreation and water supply. Completed in 1969, this earth dam stands at a height of 70 feet and has a storage capacity of 60,200 acre-feet, with a normal storage level of 19,700 acre-feet. The dam, located on the Middle Raccoon River, covers a surface area of 1,260 acres and has a drainage area of 440 square miles.

With a significant hazard potential and a satisfactory condition assessment as of the last inspection in May 2017, Lake Panorama Dam is regulated by the Iowa Department of Natural Resources. The dam features an uncontrolled spillway with a width of 100 feet, and it is designed to manage potential risks and emergencies, although specific emergency action plans and inundation maps were not reported as of the last update in April 2021. Despite moderate risk levels, the dam continues to provide essential services to the community while maintaining a balance between recreational activities and water supply management in the area.

StateNone
River / streamMiddle Raccoon River
NID IDIA00415
Owner typePrivate
Primary purposeRecreation
Dam typeEarth
Year built1969
Dam height70 ft
Dam length815 ft
Max storage60,200 AF
Normal storage19,700 AF
Surface area1,260.0 ac
Drainage area440.0 sq mi
Hazard potentialSignificant
ConditionSatisfactory
Last inspectionMon, 08 May 2017 00:00:00 GMT

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.
Detailed forecast

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.

Hourly detail

Next 5 days, hour by hour

Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.

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Deep dive

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.

TimeConditionTemp (°F)Snow (in)Rain (in)Humidity (%)Wind (mps)Wind dir
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Long-term outlook

15-day temperature & precipitation

Daily temperatures, snow, and rain projected over the next two weeks.

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Regional inflow

Nearby streamflow gauges

USGS streamgauges around Lake Panorama Dam -- inflows here typically show up in storage 24-72 hours later.

Track Lake Panorama 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.

FAQ

About Lake Panorama Dam

Where does the data for Lake Panorama 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 Significant 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.

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