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Redgranite Quarry

Redgranite Quarry

Wisconsin, United States

Depth
Depth Icon

48m

Visibility
Visibility Icon

5m - 14m

Entry
Shore Entry Icon

Shore

Experience Level

Advanced

Redgranite Quarry

Wisconsin, United States

Redgranite Quarry
Depth
Depth Icon

48m

Visibility
Visibility Icon

5m - 14m

Entry
Shore Entry Icon

Shore

Experience Level

Advanced


About Redgranite Quarry

This is the site where red granite was first discovered. Today this beautiful lake is used for advanced diving courses. Here you will find many steep drop offs and cliffs. Suitable for advanced dive levels only.

Redgranite Quarry Dive Info

Terrain & Features

Rock, Other, Deep

Entry Type

Shore

Max Depth

48m

Visibility Range

5m 14m

Experience Level

Advanced

Best Gas Mix

21% – 24%

O2

13% at 46m / 25%

O2
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Marine Life

  • Freshwater Fish
Weather Conditions

Air temperature range (℃)
Average air temperature (℃)
Wind speed (km/h)
Precipitation (mm)
Dive Operators near Redgranite Quarry

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Location

Dive Site Hazards

  • Bubble Trapping Under Overhangs — Rock overhangs can trap exhaled bubbles, reducing visibility and causing disorientation.

  • Reflected Surge Patterns — Surge reflecting off rock faces can create irregular and unpredictable water movement.

  • Current Funnel Effect — Narrow gaps between rocks can accelerate water flow unexpectedly.

  • Gradual Narcosis Onset — Narcosis may develop slowly, making self-assessment unreliable.

  • Task Fixation at Depth — Cognitive narrowing at depth can reduce awareness of time and ascent rate.

  • Increased Gas Density Breathing Load — Higher gas density at depth increases work of breathing.

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