Fall-run striped bass!?

For many years most anglers and fisheries biologist had a rough idea of striped bass (Morone saxatilis) movements between the fresh water Delta and tributaries, and marine Read More…

Dead or alive

There are numerous advantages to using a fish counting weir instead of traditional carcass surveys to enumerate spawning migrations of anadromous fish. A weir (aka Alaskan weir, Read More…

Vaki Riverwatcher

Once you have a Fish Counting Weir how will you actually count the fish? A fish weir essentially creates an artificial fish barrier in the river and Read More…

Fish counting weir

How do you count adult salmon migrating upriver to spawn if they don't pass a fish ladder on their journey? We went looking for an answer to Read More…