With spring knocking on the door, now is a great time to start doing a bit of river fishing, especially at lower elevations. Although tailwaters such as the Blue River below Dillon and Green Mountain reservoirs are popular options, the Blue River at both locations is running low and clear, making for difficult catching. Fine tippets and midge patterns will produce a few fish, but action has been slow as of late.
A better option is to head over toward Glenwood Springs. Before you reach the canyon, the Eagle River is open and running low and clear. The fish are still in winter mode, so concentrate on the deeper, slower runs. Most standard nymph patterns, such as pheasant tails, copper Johns, princes and midges such as the Mercury Brassie, will work. Fish slowly and thoroughly for the best results. The Roaring Fork above Glenwood is fishing much the same.
If the Eagle River doesn't produce, take a quick detour to Sylvan Lake with an ice auger. With a good 10 inches of ice capped with a few inches of snow, ice fishers will be comfortable fishing for brook trout in shallow waters. Small, dark crappie jigs tight to the bottom frequently will do the trick.
Green Mountain Reservoir is still very low and likely will remain that way until the thaw gets going in earnest. This remains a good place to catch fair numbers of small lake trout. Most anglers are finding them near the bottom in water from 40-90 feet down. The bite is light, so dead sticking isn't recommended. Small tubes with a bit of sucker are the most popular approach. If the lake trout are uncooperative, move shallow and try worms in shallow water for trout.
South Park's Elevenmile Reservoir has been seeing a lot of anglers, but the reports are mixed. While a few nice fish are being caught, there are a lot better waters right now.