on the grassy bank of the reservoir is a concrete hydraulic structure with a gate on a worm mechanism to regulate the water level.

waterway walkway transport bridge garden river track grass tree vehicle backyard agriculture water yard farm plant canal flower grassy bank reservoir concrete hydraulic structure gate worm mechanism regulate level far are city buildings cranes thunderstorm coming buildings clouds cloudy coastal background structure poles dam dull fence valve grass shore engineering it#39aph39#s raining lake land reclamation man-made pond manual drive meadow mechanism metal metal municipal nature pillar plants power line railings level safety scenic view technology tree trees vegetation village adjustment system worm-operated valve