The Farmington is currently a medium-low total flow of 229cfs in the permanent Catch & Release area- this is a very wadeable level, and great for dry fly & wet fly fishing. The entire river outside of the Catch & Release section has been stocked multiple times in March & April. Don't limit yourself to only the more popular sections of the river, as there is literally excellent fishing all over it. The permanent C&R section is slated to be stocked sometime this week, including the large Farmingtion River Survivor Strain Two Year Olds that typically are obese and average 14-18", with a few even bigger.
Nymphing has been a very consistent way to catch trout early in the season on the Farmington, and some truly large fish are getting caught on them. It's how I (Torrey) personally catch most of my bigger trout. Underneath the water use Hendrickson Nymphs #12-14, Hendrickson Soft-Hackles, Olive/green Caddis larva #14-16, Prince Nymphs #12-16, Quasimodo Pheasant Tails #12-18, Strolis Dark Brown Quill Jigs #10-14, Strolis Rock Candy (olive, green) 10-12, Black Stoneflies #12-16, Golden Stoneflies #8-12, Zebra Midges #18-20, and Hot Spot Nymphs #12-16.