the clack would not be my choice, in the winter you can read a little water from home, the clack, willy columbia and many other rivers are fed by hundreds of feeder streams at low elevation= more water, so in the event of rain, fish higher in the systems or choose rivers who's tribs are in the snow zone.. moisture falling as snow will not fill your river up, the other option is to pick a coastal system, many coast streams are only 15 or 20 miles from their headwaters to the ocean with less tribs...= clearing up faster after the rain, some do it in meer hours.. others take days... its the science of steelheading... or just one of 100's of details that will make or break a day- Good luck!