A low-impact water conserving dam includes a dam body and reinforcing ribs arranged on a rear portion of the dam body. The reinforcing ribs comprise transverse reinforcing ribs and vertical reinforcing ribs interlaced with the transverse reinforcing ribs. A front portion of the dam body is an inclined surface and a rear end of the dam body is a platform surface. A planting bin is arranged on the platform surface of the dam body for planting vegetation. A plurality of water flow through holes are arranged in a matrix manner at a bottom of the planting bin. A water storage bin is arranged in an interior of the dam body. The water flow through holes are communicated with the water storage bin. A water drainage channel communicated with the water storage bin is formed in a middle upper portion of the inclined surface of the dam body.