That's what it's like out west of where I live. Hundreds of square miles of uninterrupted red (and many now gray) trees. This has presented another problem regarding water, though opposite of what has been already pointed out. Since most of the trees are dead in many areas, there is nothing to suck up the water from the soil. Vast areas west of here are fairly flat and are turning into swampland for months at a time. Breakup season used to last a couple to three months, now we're looking at almost twice that in some areas.
The sad thing is that I remember 20 years ago when really nobody knew about the pine beetle, and it was limited to a very small stand of Pines out west of here, near the coast in Tweedsmuir Park. But since it was a park, the government at the time was unwilling to step in and work on the problem, and instead let nature take its course. We've had some incredibly warm winters in the years between - whether a cycle or climate change or whatever - and now here we are. They did the same thing in 2003 with a forest fire in almost exactly the same area. The estimated cost to fight the original fire was about a quarter of a million dollars, but they decided to let it burn itself out because it was a park. But because of the beetle-killed trees and some unfortunate wind, instead it grew into one of the largest fires in BC history and cost many millions to put out, after destroying massive amounts of forest and property. I agree with letting some fires go, especially in light of the beetle problem, but uncontrolled, unprepared fires in beetle-kill is unwise at best.