cornwall countryside England english farm fast flowing Great Britain hillside Natural landscape nature Riparian zone rocks spring stream water water resources watercourse waterway autumn brook burn cascade green leaves moss mossy narrow rapids river tumble waterfall wet beak bill bird calm down feather feathers fowl lake neck swan swim swimming white beach dark ebb landscape light low natural rural sand sea tide wild backlight backlit branch branches canoe canoeing family group ocean people sailing silhouette sunset afloat cascading colors colours cool cooling edges edging floating flow foliage greenery grove lily-pad multi-level multiple-levels peace peaceful plants pond public reflecting reflections ripples rippling running shade shadows steps still stones stonework streaming sunlight sunshine tranquil trees vegetation water-lilies water-plants waterfalls