I fished the St. Vrain river yesterday about 3 miles up the road from Lyons. For the first time in a LONG time I got skunked. I am very new to Colorado but have fished here several times before with great success. Most of the elements seem to be in place for a good day of fishing with the exception of some mossy slime, tree branches and leaves on the bed of the stream. But it wasn't un managable. The water was 42 degrees and by mid day climed to 50 degrees. On a scale of 1-10 (10 being gin clear) the water clarity was almost a 7. I was able to identify specific insects by flipping over rocks and had the corresponding flies. (nymphs) I saw some sporadic caddis hatches alot of micro midges, a few may flies. I was using 9-10 feet of leader on 6X tippet. I worked all the usual fishy holds in a creek. Can anyone crack the code for me here?