06/11/2026
Fish Passage. At RIVHAB, we specialize in designing fish passage solutions to restore access to critical spawning, rearing, and refuge habitat. From fish ladders, nature-like fishways, and dam removals to aquatic organism passage (AOP) road crossings, our team combines fisheries science, engineering, geomorphology, and construction expertise to deliver solutions that work for both fish and infrastructure.
The photos highlight two of our core specialties:
✔️ A restored creek following dam removal and channel reconstruction, to include new irrigation diversion infrastructure
✔️ Before-and-after replacement of a barrier culvert with a fish-friendly stream simulation crossing
We're currently advancing several nature-like fishway projects across the Pacific Northwest and recently completed design of four road-crossing AOP projects, helping reconnect miles of habitat for native fish populations.
Whether the barrier is a dam, diversion, or road crossing, our goal remains the same: reconnect rivers, restore processes, and improve fish passage.