The Grand and Rogue River Confluence EarthCache
The Grand and Rogue River Confluence
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River - A large natural stream of water emptying into an
ocean, lake, or other body of water and usually fed along its
course by converging tributaries.
Tributary - a stream or river which flows into a larger
stream or river.
Confluence - The meeting of two or more bodies of water. It
can be where a river meets a lake, sea, or ocean. Or in our case
here, the junction point of a river and its tributary.
The Grand and Rogue River Confluence
Down river, 150 yards or so to the right from where you stand, the
Rogue River enters the Grand River. This spot where the two rivers
join together is called a confluence.
From here the mouth of the Rogue River may be hard to see at times
because the Rogue is a much smaller river. But the contribution of
its waters and their effect on the Grand River are
unmistakable.
The Rogue River is 42 miles long and has 234 square miles of
watershed. It varies from 15 feet wide in the upper sections to 80
feet wide near its end and is between 1 - 4 feet deep. There is one
dam along its length- the Rockford dam.
The Grand River is Michigan’s longest river and has 8,592
square miles of watershed. Its headwaters are in Somerset Township,
Hillsdale County and it flows into Lake Michigan approximately 260
miles downstream at Grand Haven. It has numerous dams along its
length. Its major tributaries are the Red Cedar River, Looking
Glass River, Maple River, Flat River, Thornapple River, and the
Rogue River.
Early in our country's history both the Rogue River and the Grand
were used as an important transportation routes by Indians,
explorers, traders, and finally white settlers. During Michigan's
lumber era in the late 1800s their waters floated timber to the
mills along the shores of the Grand River. Today their uses are
mainly recreational.
Logging Requirements
To log this cache we ask you to complete the following. All that
should be posted with your log will be a photo. All answers should
be e-mailed to us and not posted in your log. Go ahead and log your
find at the same time you're sending your email answers. We reserve
the right to delete find logs that haven't emailed their
answers.
- Please post a picture of yourself/team with the Grand River in
the background.
Many times at a confluence the tributary will have a dramatic
effect on the course and width of the river it is entering. Email
us the answers to the following questions which can be found by
observing the rivers from the posted coordinates.
- Describe what happens at the confluence of the Rogue River and
the Grand River. Is there any change in the course of the Grand
River?
- Is there any change in the width of the Grand River after the
confluence?
Congratulations to Fanugler on the first to log and Frank and
Peggy on the FTF! (sorry about the confusion)
Additional Hints
(No hints available.)