and enjoyable, please consider the following:
- Lakes Superior and Michigan are
famous for violent weather. Monitor weather conditions and
marine weather forecasts.
- Water temperatures vary with the
season. Surface temperatures can reach 65°F in summer,
but divers will find underwater temperatures in the 40s
and 50s. Drysuits are recommended, but they require additional
training.
- Visibility normally ranges from
10 to 80 feet, but can be reduced to zero under certain
weather conditions. Murky runoff after storms can cloud
visibility near mainland sites.
- Diving parties should know CPR
and emergency procedures. Carry an adequate first-aid kit,
including an oxygen delivery system.
- For diving emergencies, call local
emergency medical services first. Then call the Diver's
Alert Network (DAN) at 1-919-684-8111.
- Rangers (at Apostle Islands National
Lakeshore) and the U.S. Coast Guard monitor marine channel
16.
- All boaters should use up-to-date
NOAA charts for navigational purposes.
CAUTION: Diving can be a hazardous sport, and participants dive at
their own risk. The Wisconsin Historical Society and UW
Sea Grant accept no responsibility for loss of any kind,
including personal injury or property damage. This information
is provided for the exclusive use of certified recreational
scuba divers or persons under the supervision of a certified
dive instructor. Misuse of this information could result
in injury or death. Always follow safe diving procedures:
Monitor changing site conditions and weather; use a "diver down" flag;
do not dive alone. Wisconsin law prohibits unauthorized
disturbance or removal of artifacts, structure, cargo and
human remains. Please keep these sites intact for other
divers to explore.
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