noun

• A series of pools built like steps to enable fish to ascend a dam or waterfall.

  ‘A fish ladder was built into the 29-foot-high dam.’

  More example sentences

  • ‘City officials proposed using the revenue to cover the cost of removing 620 miles of road, building fish ladders, and other environmental protections.’
  • ‘Dams prevent upstream migration of adult salmon, but this can be overcome to some extent by the construction of fish ladders in which the salmon jump up a long series of waterfalls.’
  • ‘With farmers' cooperation, fish ladders were improved, five dams were removed entirely, and alternate water sources were found for some irrigators.’
  • ‘We also have constructed fish ladders and we developed quite a few parks for the public to come and see, and learn about the potential of the river restoration.’