Corralling Steelhead: Carmel River Weir
One of the most fundamental challenges for freshwater fisheries biologists in California is monitoring the peaks in migratory fish movement that tend to happen shortly after rains Read More…
fish weir
Flashback Friday: Heavy Metal
In today's Flashback Friday, we describe the installation of a rigid weir to monitor both upstream and downstream fish passages – including with a video of the Read More…
Moonwalk passage
Adding a little humor to an otherwise routine task, this crewmember shows off his dance moves after cleaning algae from the viewing window of a fish counting 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…
All your eggs in one basket?
The California Department of Fish & Game (CDFG) operates a kokanee salmon stocking program with support from Kokanee Power, a California and Oregon non-profit. Kokanee salmon are 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…
Largest fish trap ever built found in Amazon!?
Weirs have long been used as a means to collect fish by indigenous people throughout North America. Recently, archeologists discovered a large rock tidal weir used to Read More…