Why did the salmon cross the road?
New data on culverts fish habitat added to CRWP's fish passage database.
"To swim to their spawning grounds" is the more common response. From our first introduction to salmon we are taught about their remarkable life cycle that finds them returning to the very stream from which they hatched years before. But juvenile salmon, or fry, also try to cross the road in search of food and shelter. Depending on salmon species, they will spend up to 4 years moving between lakes, ponds, wetlands and streams before migrating out to the ocean.
How do salmon cross roads?
Under bridges in some places, and through culverts in most places. Unfortunately, under-sized and/or failed culverts can impede fish passage at all life stages, and upgrading culverts is costly. That is why CRWP has been working since 2009 to develop a method for prioritizing fish passage projects.
By generating a score for fish habitat and culvert condition at each crossing we are able to identify the worst-functioning culverts associated with the highest quality fish habitat and direct limited restoration funding towards improving these crossings.
For more information and to access the online mapping tool, visit our culvert project webpage.