lava Blueprint surface screw trap Downward Barren income
Smolt Trapping Underway on River Frome - Game and Wildlife Conservation Trust
Sacramento River Juvenile Anadromous Fish Monitoring Project at Red Bluff. An overhead view of a rotary screw trap on the Sacramento River at the base of the Red Bluff Diversion Dam Stock
Salmon smolt counting - Game and Wildlife Conservation Trust
Check Rotary Screw Trap | FISHBIO | Flickr
Sacramento River Juvenile Anadromous Fish Monitoring Project at Red Bluff. Closeup view of one of the rotary screw traps at the base of the Red Bluff Diversion Dam on the Sacramento River
A CATALOG OF ROTARY SCREW TRAPS THAT HAVE BEEN OPERATED IN THE CENTRAL VALLEY OF CALIFORNIA SINCE 1992