Depending upon where you were planning to fish; you may be turned away. Not even homeowners are being allowed into some of the burned areas yet.
The long term affects, one would surmise, likely won't be known for a long time. The current estimate range from 900,000 to 1 million acres burned so far. FAR surpassing the previous record of the infamous "Tillamook Burn". Which only consumed 355,000 acres. But actually happened over a period from 1933 - 1951 at 6-year intervals. Most of what we've just seen...happened in ONLY ONE WEEK!!! Which would have much more sudden impacts, and on a greater scale.
You might want to call ahead, or look online. Before you venture out. To see if you can even get where you're going. To be sure it isn't closed OFF. It it's anywhere near, or in, the fire zones.