The Lake Guardian Explores Lake Superior
Lake
Guardian was excited to start her journey in Lake Superior,
the largest of all the Great Lakes and the one with the least amount of
pollution. Lake Superior is so large and deep that all the other Great
Lakes plus three more lakes the size of Lake Erie could fit in it. It
is well-known for its lovely beaches and clear blue water. The water is
so clear you can see fish swimming way down deep. Lake
Guardian knew she needed to be careful, for Lake Superior's
mood can be so peaceful and serene one minute, and the next minute a ferocious
and lashing storm will rise out of its depths.
Lake
Guardian started in the town of Duluth, Minnesota, and headed
northeast towards Thunder Bay, Canada. As she cruised, Lake
Guardian learned that very few people live around this Lake
area compared to the rest of the Great Lakes, and she knew that this was
a large part of they Lake Superior is so beautiful and clean. The more
people there are in an area, the more pollution problems Lake
Guardian knew she'd find. How did she know this?
The vast expanse of the water and
many pretty hills around Lake Superior would make it hard for Lake
Guardian to leave. As Lake
Guardian cruised toward Thunder Bay, she saw people hiking,
swimming, fishing, skiing, and boating. Then she looked over and was so
shocked she almost dropped her anchor! As a motor boat passed her bow
she watched a family toss a six ring plastic can holder overboard with
a plastic grocery bag. Lake
Guardian was very upset because beautiful birds can get their
beaks or heads caught in the rings, and then they can't eat. She was concerned
that the fuel from the motor boats was polluting the water too. People
often forget that when they have fun, they need to be careful that they
don't harm nature. Lake Guardian
wished all people had respect for the Great Lakes like the Chippewa culture
does. In the Chippewa language the work "Wayzhigwanaad" means
"water spirit" and they emphasize that the health of our water
is directly related to the quality of life for all livings things on the
planet.
Lake
Guardian collected some samples of water to study how much fuel spills
from the motorboats and freighters into the water. As she passed by Thunder
Bay she saw big paper mills and large fishing boats. Crossing over to
Marquette Michigan, she followed the coastline towards Sault Ste. Marie,
where she would travel to get to Lake Huron. The Lake is so big that sometimes
Lake Guardian thought she was in an ocean. "Where did all
this water come from?" Lake Guardian asked the scientists
on board. Dave, the environmental scientist, told her about the pathways
of water on Earth, called the hydrologic cycle. Dave told her that rain
helps keep the Great Lakes full. The rain that falls on the land either
runs off the surface back into the Lakes through streams and creeks, or
soaks into the ground. As she was talking to Dave, a speckled trout swam
by. Lake Guardian asked the trout if he knew how water in the ground
finds its way back to the Lakes. The trout explained that the water travels
underground and enters creeks and stream which drain into the lakes, and
sometimes enters the Lakes directly below the surface. Dave then added
that when it is hot, water evaporates up into the air. When the water
gets high enough in the air, it cools off and comes back down as rain
and the cycle starts all over again.
"Lake
Guardian, it will be important for you to understand how water
finds its way to the Great Lakes, because pollution sometimes follows the
same paths to enter that lakes and hurts them," Dave explained. Lake
Guardian thought a lot about what Dave said, and quickly began
collecting samples of water and fish to study. She wanted to see what kinds
of pollution were already using some of those pathways into Lake Superior.
Story
Highlights |
Hydrologic Cycle:
Evaporation, transpiration, condensation,
precipitation, infiltration, and runoff.
Recreational Activity
is a Source of Pollution:
Environmental damage can be
caused by many recreational activities. Campers, hikers, and boaters
crate problems by littering , dumping sewage and other wastes into
the lakes, or letting gas from boats leak into the waters. Soil
erosion problems result from removal of trees and grasses for development
of marinas and summer homes.
Hot Spots: 8
Peninsula Harbor, Jackfish Bay,
Nipigon Bay, Thunder Bay, St. Louis River, Torch Lake, Deer Lake/Carp
Creek/Carp River, St. Marys River.
Vocabulary |
anchor |
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coastline |
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condensation |
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creek |
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evaporation |
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expanse |
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ferocious |
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hydrologic cycle |
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infiltration |
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