Noun
a series of ascending pools providing a passage for salmon to swim upstream past a dam
Source: WordNetDUC built a 250-metre dike, converting the salt marsh into an artificial freshwater site, complete with a fish ladder, which allowed fish to access the habitat within the upper tributary. Source: Internet
An estimated 500 interlocking concrete blocks are being used in the construction of the fish ladder. Source: Internet
As of mid-August, the lake level was five inches below the spillway, due mostly to evaporation and seepage at the fish ladder. Source: Internet
The fish ladder at Sheepscot Pond is designed to use about 6 cubic feet per second. Source: Internet