Water Dam-hydraulic complex (Polygon mesh 3D model) is available on CGTrader for $38. Original author: Lila-Rose-Cole.
BLEND (Blender, filesize: 31.2 MB), MAX (Autodesk 3ds Max, filesize: 366 MB), JPG (JPG, filesize: 366 MB), PSD (Adobe Photoshop, filesize: 366 MB), SKP (Sketchup, filesize: 220 MB)