flooded stream led to a narrow riverbed where the water drains quickly, the bends must be laid out with a stone so that water ero

amphibian bends bent biotope bottom cladding country creek curved curves damage does down drainage drains ecology edge ero erosion flood flooded flooding forest grass green impassable irrigation laid land landscape lawn led meadow meander must narrow natural nature not outdoor park path pipeline pond quickly rapids reclamation renovation restoration river riverbed road rock scenery sewage shallow slow stone stream supplies that them through timber transportation wall water watercourse where wood wooden