CastScience

Gaukler Point boulder ledge, Grosse Pointe Shores

WaterMichigan
Depth6-12 ft
BottomBoulders and rock; ledge rises to 2 ft
CurrentNo
River plumeNo
Well-known spotNo
Position42.474, -82.860 (approximate center)

Rock edge; navigation hazard on top

Waves by wind direction and speed

SPM shallow-water wave model (SPEC 5.5) at the area's wave depth of 2.7432000000000003 m, over-water wind, fetch from the lake outline. Hmax = 1.86 x Hs, the largest wave in about an hour.

Wind fromFetch10 mph15 mph20 mph25 mph
N7.4 km0.6 ft / 1.1 ft0.9 ft / 1.7 ft1.3 ft / 2.3 ft1.6 ft / 2.9 ft
NE22.6 km0.8 ft / 1.6 ft1.3 ft / 2.4 ft1.7 ft / 3.1 ft2.0 ft / 3.8 ft
E36.8 km0.9 ft / 1.8 ft1.4 ft / 2.6 ft1.8 ft / 3.3 ft2.1 ft / 3.9 ft
SE27.0 km0.9 ft / 1.6 ft1.3 ft / 2.5 ft1.7 ft / 3.2 ft2.1 ft / 3.8 ft
S16.6 km0.8 ft / 1.4 ft1.2 ft / 2.2 ft1.6 ft / 2.9 ft1.9 ft / 3.6 ft
SW1.9 km0.3 ft / 0.6 ft0.5 ft / 1.0 ft0.7 ft / 1.4 ft0.9 ft / 1.8 ft
W1.8 km0.3 ft / 0.6 ft0.5 ft / 0.9 ft0.7 ft / 1.3 ft0.9 ft / 1.7 ft
NW2.5 km0.4 ft / 0.7 ft0.6 ft / 1.1 ft0.8 ft / 1.5 ft1.1 ft / 2.0 ft

Each cell: significant wave height / largest wave in about an hour. Above 2 ft: caution.

Wave heights are model estimates from forecast wind, not measurements, and actual waves can be 25% or more higher. Check the marine forecast and the water at the launch before you go. The decision to go out is yours. Full text

Evidence

  • NOAA Coast Pilot 6
    Boulder ledge 1.5 mi NNE of Gaukler Point