How to stop erosion on a river bank<br>Use coir netting that's 700-900 grams per square meter (gsm). Coir netting is made from coconut fibers and is biodegradable. Normal or heavy duty netting should be used when there is a large amount of water flow.
Coir netting is not biodegradable 
( z1 possible :polarity - :ARG1 ( z2 biodegradiate :ARG1 ( z3 net :mod ( z4 coir ) ) ) )