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.
Some netting is heavy duty.
( z1 duty :mod ( z2 heavy ) :domain ( z3 net :quant ( z4 some ) ) )