A watershed is a region that drains into a body of water. One example of a watershed is the Credit River watershed, which is located in Southern Ontario. The Credit River is similar to the branches of a tree because there are many tributaries that join into one. The creeks empty into streams, which then empties into the river, eventually forming one main body of water. This relates to the branches on a tree, joining eventually, to the trunk. The tributaries go from small to big because they join bigger bodies of water as shown in my physical model. The top of Credit River Watershed is on high land and the bottom of the watershed is on low land. Since water cannot flow uphill, it flows downhill to the lowest point because of the pull of gravity.
