“Even if they are not what we have historically considered migratory species, all fish need to be able to move freely within a given stream,” says Phil Herzig, a fisheries biologist with the U.S. Fish and Wildlife Service. “The goal” explains Devers “is to maintain connectivity for species like brook trout so that we don’t cut a population off so that it doesn’t have genetic mixing with other downstream populations.” Credit: Stever Droter

All aquatic species, whether they be migratory fish, resident species, or turtles can benefit from these passages. Credit: Steve Droter