https://www.youtube.com/watch?v=dQw4w9WgXcQ
Our section of the stream had a big problem with bank erosion. Some of the causes of this is a lack of vegetation in certain areas there is also a lack of structure to help support the bank. The fast flowing channel can also create erosion which causes the meandering of the stream.
Some of the things we can do to prevent further erosion is sloping the bank at a 45 deg angle, adding more vegetation to the bank to support the soil and adding structure to the shoreline to prevent the water from washing away the bank (Example of this would be rocks or logs). All of this would prevent more sediments getting into the water and destroying fish habitat.
Our stream features a fallen willow tree over the bank though this is one of the only overhanging plants on our section. The addition of vegetation would highly benefit this stream.
Our stream features woodland and grasses on the shoreline with a canopy cover of about 50%. The flat bank causes structural issues on the bank and also allows for flooding over the bank creating more siltation and erosion. Shrub type plants such as serviceberries, wild roses, also give structure.
Planting vegetation on the shoreline will create shade over the stream which cools the water. Maintaining cool temperatures is vital for fish life especially trout species. Planting trees such as willow, red osier dogwood, and oaks are adapted to wet environments and the soil conditions of banks. The vegetation creates detritus which is fallen leaves or dead vegetation. Detritus is the beginning of a food chain where the macroinvertebrates decompose the dead organic matter.
Adding more structure to the shoreline such as large rocks and root wads will prevent further erosion by strengthening the bank. This works because the water will deflect off the rock or log instead of the bank. These also provide cover and feeding areas for fish species by creating a dead space. The creation of a fascine which is a long tube of willow and dogwood branches creates a barrier between the sandy bank and the water, so it prevents the further erosion. Willow and dogwood are also very versatile species because they can be cloned just through a clipping.