Trinity River salmon fishing June 2014 Dave Jacobs June 23, 2014 Fishing Report Trinity River salmon fishing June 2014. The Trinity River salmon fishing in June 2014 is really improving with the dropping river flows and arrival of king salmon throughout the Trinity River. There are king salmon moving through the entire upper river from Lewiston downriver through Grays Falls as reported by Trinity River salmon fishing guide Dave Jacobs. Side drifting roe and tuna balls working for bank anglers. Trinity salmon are averaging 8 to 15 pounds with large fish to 20 pounds being landed. Back bouncing sardine wrapped flatfish style lures or back bouncing roe and tuna balls are working from our drift boats. We are available for guided salmon fishing trips in June and July for Spring king salmon. Summer steelhead are also showing along with brown trout.