Dam Report

Hoist dam

Michigan, USA Dead River Hazard High
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Dam height
63ft
Hazard rating
High
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Hoist                                                             -- None dam
Hoist None · Dead River
About this dam

Hoist

Hoist is a hydroelectric dam located in Marquette, Michigan, along the Dead River. Completed in 1941, this structure stands at a height of 65 feet and has a dam length of 3,642 feet. With a maximum storage capacity of 41,666 acre-feet and a normal storage capacity of 31,563 acre-feet, this dam serves multiple purposes including hydroelectric power generation and recreation.

Managed by the Federal Energy Regulatory Commission, Hoist poses a high hazard potential and has a moderate risk assessment rating. The dam features an uncontrolled spillway with a width of 440 feet and one other controlled outlet gate. Despite its age, the condition assessment of Hoist is currently not available, highlighting the need for ongoing monitoring and maintenance to ensure its safety and efficiency.

Water resource and climate enthusiasts will find Hoist to be a fascinating structure, combining historic significance with modern functionality. Its location in the picturesque surroundings of Marquette, Michigan adds to its appeal, offering opportunities for recreation and appreciation of the vital role it plays in generating clean energy for the region. As efforts to address climate change continue to gain momentum, the role of dams like Hoist in sustainable water resource management becomes increasingly important.

StateNone
River / streamDead River
NID IDMI00175
Owner typeNot Listed
Primary purposeHydroelectric
Year built1941
Dam height63 ft
Dam length3,642 ft
Max storage41,666 AF
Normal storage31,563 AF
Surface area2,429.0 ac
Drainage area138.0 sq mi
Hazard potentialHigh
ConditionNot Available
Last inspectionWed, 30 Sep 2020 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 Hoist -- inflows here typically show up in storage 24-72 hours later.

Track Hoist 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 Hoist

Where does the data for Hoist 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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