Enviornment Southland

Today we had a lady from E.S ( Enviornment Southland) come in. She talked about the Waihopai River and Seaward Bush. The main thing that was wrong with the Waihopai river is that there is way too much mud on the river bed. There is so much mud there because river banks don't have trees or plants to hold the mud together and it is falling into the river.