EROSION ON THE OTONABEE RIVER
Erosion is defined as the gradual destruction of something by natural forces such as wind water and ice to name a few. Erosion may also be caused by humans.
The Otonabee River is a river in Peterborough County in Central Ontario, Canada. The river flows from Katchewanooka Lake, at the north end of the community of Lakefield, through the city of Peterborough to Rice Lake. It is in the Great Lakes Basin and forms part of the Trent-Severn Waterway. The Trent Severn waterway consists of rivers and canals which raise boats from Lake Ontario (74 meters above sea level) to Georgian Bay (174 meters above sea level) via a series of locks.
You are going to be looking at several sites along the river south of Peterborough to see if the erosion is caused naturally of is caused by humans.
This Earthcache is accessible only by water. You will need some sort of water craft to reach the waypoints.
There is no reason to leave your water craft to answer any of the questions.
At waypoint 1 East Bank
N44 13.259 W078 20.986
What material is the bank of the river (mud, sand, gravel, rocks)?
Are there signs of erosion? Explain your reasoning.
If there are signs of erosion are they caused naturally or man made?
At waypoint 2 West Bank
N44 13.233 W078 21.066
What material is the bank of the river (mud, sand, gravel, rocks)?
Are there signs of erosion? Explain your reasoning.
If there are signs of erosion are they caused naturally or man made?
Waypoint 3
N44 12.808 W078 21.156
Along the shore you will see a large tree. This trunk appears to be a lighter colour near the ground. This ring shows the water high mark when the river is in flood stage. You can see this lighter colour on trees as you paddle the river.
Estimate the distance from the water level to the top of this light mark.
Does one side of the river suffer from erosion more than the other? Explain.
Do you think the erosion is mild, moderate, severe or extreme?
Please send me your answers through my GC.com profile. If there is more than one cacher in your party, include the names of all cachers in your group. Only one person needs to send the answers for their group. Please include the names of all cachers in your group. No spoiler photo's please. Found logs posted without answering the questions will be deleted.
Launch Point
Whitfields Landing
N44 12.717 W078 21.304