on the grassy bank of the reservoir, a concrete hydraulic structure was built with a damper on a worm mechanism to regulate the wa

waterway fence walkway grass agriculture transport farm bridge field track lawn pasture wetland tree wall reservoir vehicle grassy bank concrete hydraulic structure was built damper worm mechanism regulate water level behind meadow village power line poles runs buildings clouds cloudy coastal background structure poles dam dull fence gate valve grass bank shore engineering engineering it#39aph39#s raining lake land reclamation lifting mechanism man-made pond manual drive meadow metal metal municipal nature pillar plants line railings level safety scenic view technology tree trees vegetation village adjustment reservoir system worm-operated valve