I was there out there March 9-10 fishing with my brother who lives in Seattle area but he used to live in the tri-city area. The Tri-city area is Kenniwick, Pasco and Richland and a good section of the river to fish. We hired a guide both nights and planned it around a full moon. More specifically 3-4 days before a full moon. The guide service starts doing night trips in February and the days he will not miss is those 3-4 days before and 3-4 days after. We would start fishing around 5 and go until 1-2 in the morning. As with any river, it’s all about timing and water conditions. The water temps for the time we were there were quite a bit warmer than normal. In the low to mid 40’s when normally it’s in the mid to high 30’s. Also, the flow was down spreading the fish out. On March 9, first night, it was calling for high winds so guide decided to fish a section of river bordering Oregon and landed in the town of Umatilla. Water was quite a bit dirtier here then by the tri cities area and fishing not nearly as good as we would have night two. Managed only a few fish and nothing to brag about. Wind ended up being a non issue as it was fairly calm, in hindsight, wished we would have fished towards the tri-city areas. Second night was quite a bit better, water clearer in that area and we put a descent amount of fish in the boat. We didn’t get any of the big girls that area is know for but I did get a 29”, which ended up being the biggest for us. I’m pretty sure this was a big male and majority, if not all, were all males. My brothers biggest out of the Columbia is 13lbs, which he caught when he lived in that area. He also caught some dandy kings when that run is on. All we did both nights was troll. Smithwick rogues are popular out there. That’s usually what the guide does as he doesn’t know skill level of his clients. Afterwords he said he would have done some jigging, casting etc since we were experienced. The wind was quiet a bit stronger second night actually and he was thankful we could manage our own lines as boat control was difficult on its own. We trolled island breaks, points, and big flat breaks generally staying in the 15-20’ range.
State of WA has some strange and complicated fishing regs. Some parts of the river you are allowed two lines, some aren’t. If you are in a two line area you need a two line endorsement to fish the second line. Tri city section was two line area.
There is no slot or limit on walleyes but the guides are pretty protective of them. We kept smaller males that my brother brought home but all the big ones would be going back. It’s a big river with lots of fishy areas so it would be nice to spend some more time out there. There is some nice protective landings that your stuff will be safe in. Other areas to avoid is my understanding. Killing time during the day we would drive around and check out different landings, pretty much all of them had trucks with license plates from North and South Dakota.
Let me know if you have any questions and will try to answer them.
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