Portions of the river are in trouble due to practices like in-stream sand dredging, which causes erosion, and non-compliant wastewater plants which pollute water supplies for their downstream neighbors.
(Portions of the river; are; in trouble) (in-stream sand dredging; causes; erosion) (non-compliant wastewater plants; pollute; water supplies)
Portions of the river in-stream sand dredging non-compliant wastewater plants
are causes pollute
in trouble
erosion
water supplies