Dam Report

Crow Wing 8th Lake dam

Minnesota, USA Crow Wing River Hazard Low
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Dam height
8ft
Hazard rating
Low
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Crow Wing 8th Lake -- None dam
Crow Wing 8th Lake None · Crow Wing River
About this dam

Crow Wing 8th Lake

Crow Wing 8th Lake, located in Nimrod, Minnesota, is a state-owned dam on the Crow Wing River with a primary purpose classified as "Other." Built in 1938, this gravity dam stands at a height of 8 feet and has a structural height of 9 feet, serving to store water for various purposes. With a normal storage capacity of 21,033 acre-feet and a maximum storage of 26,000 acre-feet, this dam plays a crucial role in managing water resources in the area.

Managed by the Minnesota Department of Natural Resources, the Crow Wing 8th Lake dam has been deemed to have a low hazard potential and is reported to be in satisfactory condition as of the last assessment in 2009. The dam is inspected every 8 years to ensure its continued safety and functionality. The surrounding area boasts a drainage area of 39.2 square miles, with a maximum discharge capacity of 560 cubic feet per second, highlighting the importance of this structure in regulating water flow and levels in the region.

Overall, Crow Wing 8th Lake serves as a vital component in water resource management and climate resilience efforts in Hubbard County, Minnesota. With its strategic location on the Crow Wing River and its role in storing and regulating water, this dam contributes to environmental sustainability and flood control measures in the area. Its satisfactory condition and regular inspections ensure its continued effectiveness in serving the community and protecting the surrounding ecosystem.

StateNone
River / streamCrow Wing River
NID IDMN00189
Owner typeState
Primary purposeOther
Dam typeGravity
Year built1938
Dam height8 ft
Dam length48 ft
Max storage26,000 AF
Normal storage21,033 AF
Drainage area39.2 sq mi
Hazard potentialLow
ConditionSatisfactory
Last inspectionTue, 31 Jul 2018 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 Crow Wing 8th Lake -- inflows here typically show up in storage 24-72 hours later.

Track Crow Wing 8th Lake in the Snoflo app

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FAQ

About Crow Wing 8th Lake

Where does the data for Crow Wing 8th Lake 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.

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Manage alerts in the Snoflo app

Custom alerts are configured in the iOS app -- favorite this dam, set a threshold, and you'll get a push the moment conditions cross.

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