Downstream of bridge #7
Downstream of Bridge #7
Downstream of Bridge #7

25 feet tall by 150 feet long

Actively eroding all the way to the base

Channel starting to become embedded, but little here

Whenever Amity Creek rounds a bed as it comes down the hill, the water cuts into the clay banks. Many of these banks have poor stability and are actively eroding during high water flows, as is in evidence here and in succeeding photographs. Our interpretation is that the stream channel is carrying more water during storm events than it is capable of handling well at its present stream size and the stream is in the process of growing bigger by blowing out the banks on the outside bends.

While this may sound like a rather natural condition, the cause of the excess water during storm events likely has a significant human component. When humans cut the original forests in Amity’s watershed, the amount of water running off the land into the stream during storms and snowmelt greatly increased. While some of the watershed has regrown forest, much of it remains open as lawns, roads, fields, houses, parking lots, etc. Thus, Amity Creek receives a lot more stormwater and snowmelt runoff than its channel appears able to handle.