Dam Report

Legend Lake Number One dam

Wisconsin, USA Tr Wolf Hazard High
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Tonight low
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Dam height
21ft
Hazard rating
High
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Legend Lake Number One -- None dam
Legend Lake Number One None · Tr Wolf
About this dam

Legend Lake Number One

Legend Lake Number One in Menominee, Wisconsin, is a private water resource managed by the Wisconsin Department of Natural Resources. This earth dam, completed in 1968, stands at a height of 21 feet and boasts a storage capacity of 20,000 acre-feet. With a surface area of 1304 acres and a drainage area of 21.8 square miles, this recreational lake provides ample opportunities for water enthusiasts to explore and enjoy the natural beauty of the area.

Despite its high hazard potential, Legend Lake Number One has been evaluated as being in satisfactory condition during the last inspection in July 2019. The dam's emergency action plan is up to date, meeting regulatory guidelines, although risk assessments indicate a level 2 risk due to its location and potential impact of failure. With a regular inspection frequency and enforcement of safety measures, this water resource continues to provide a safe and enjoyable environment for visitors and residents alike.

For water resource and climate enthusiasts, Legend Lake Number One offers a prime example of responsible management and maintenance of a recreational dam in Wisconsin. With its serene surroundings, ample storage capacity, and regulatory oversight ensuring safety and compliance, this earth dam stands as a testament to the importance of sustainable water resource management in the face of changing climate conditions. Explore Legend Lake and experience the beauty and resilience of this natural oasis in the heart of Menominee County.

StateNone
River / streamTr Wolf
NID IDWI00235
Owner typePrivate
Primary purposeRecreation
Dam typeEarth
Year built1968
Dam height21 ft
Dam length190 ft
Max storage20,000 AF
Normal storage12,000 AF
Surface area1,304.0 ac
Drainage area21.8 sq mi
Hazard potentialHigh
ConditionSatisfactory
Last inspectionThu, 18 Jul 2019 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 Legend Lake Number One -- inflows here typically show up in storage 24-72 hours later.

Track Legend Lake Number One 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 Legend Lake Number One

Where does the data for Legend Lake Number One 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 High 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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Snoflo-tracked reservoirs and dams within driving distance of Legend Lake Number One.