Hi Alex as sb Dave said it will be tough, this is a hard time of year for the fly but not impossible.
Look for features especialy bridges and boats, also look for deep water as this may be a degree or so warmer depending on weather conditions. In the summer fish are more active and spread about in the water but in the winter they shoal up tight, and I mean tight!
Water clarity is important the clearer the better though I have caught fish in only 12 inches af clarity. Use lighter leaders and tippets and fish deep, and keep moving from swim to swim. Perch and pike are your best bet though a roach or two may put in an appearence. Location is everything find out were the coarsefishers are catching from and go for the most productive areas. Let us know how you do