Fish counting weir: substrate rail

One of the challenges of building your own fish counting weir is it requires every component to be custom fabricated. This post will focus on fabrication of Read More…

Fish counting weir: how to series

This is the first post in a series that will chronicle the fabrication of a fish counting weir from site selection to installation. Check out our post Read More…

Escapement surveys

Have you ever wondered what the term salmon "escapement" means? To some it may be counterintuitive, but the "escapement" is actually the number of salmon that ‘escape' Read More…

Night shift

If you follow our Field Notes page, you should be aware of the strange hours and activities required for fisheries research, including working nights in all kinds 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…