cold weather fishing

Hi Folks, Guided a large party yesterday afternoon with the fly rods.  We fished a river that has an influence of lake run rainbows, browns, smelt, suckers, and smallmouth bass.  Cool day with morning sun and afternoon clouds.  Not much wind to speak of and it was a chilly day.  Water temperatures have not really warmed up with night time temperatures still in the thirties. Water temperature was 43 degrees.  River levels are slightly above average but very fishable and the clarity was good.  Saw a decent hatch of Stenonema mayflies #12 to #14.  Looked like March Browns or Gray Fox.  It would make sense since this particular river has large gravel with heavy riffles that is not typically kind to the Ephemerella family of mayflies.  Did not see any trout rise.  We did manage to catch two brook trout who ate weighted nymphs.  A #12 Dave's Red Fox nymph and a #14 Hare's Ear nymph.  Lots of casts for a few fish.  The river fishing will only get better and it appears that once the waters warms a bit things will really turn on.  Look for Hendricksons #14/#16, Caddis dark bodied #16, Caddis candy apple bodied #14, and Gray Fox #14, Blue Quills #16, and March Browns #10/#12.  Will be running my boat this afternoon looking for northern.  Remember to clean your gear and keep the non-native species at home.  Have Fun, Willy