Blue River Silverthorne

Fishing Report

UPDATED: 5/15/25

The "tailwater" section of Blue River through Silverthorne fishes fairly consistently year round. Water temps normally stay within the lower forties (fahrenheit), which doesn’t produce a large variety of hatches. For the most part, small midge larva, and Mysis Shrimp (small clear/white shrimp inhabiting Dillon Reservoir), are staples of the trouts diet. Things start to get more interesting if Dillon Reservoir reaches capacity and “spills” through the top release of the dam, instead of the bottom. This causes a larger variety of aquatic insects that live in the Blue River to become active, and therefore more available to trout.

The best technique is usually nymphing under a small, inconspicuous indicator. Adjust your weight and indicator depth depending on the depth of the piece of water you are working, and to the depth at which the fish are holding. Seeing rising fish is a possibility, as is seeing some action on streamers.

Current Conditions:

RIVER FLOW:

100 CFS

WATER TEMPERATURE (DEGREES F):

30's - 40's

WATER CLARITY:

Clear

CURRENT FOOD SOURCES:

| Midges | Mysis Shrimp | small mayflies(BWO and PMD) | leeches, smaller fish, worms and eggs etc.

Flies to Try

NYMPHS:

DRIES:

STREAMERS:

Guide Tip of the Week:

The Blue's flows are around 100 CFS. Expect to see more water in the coming weeks. Focus on small nymph flies like the RS-2, pure midge any Midge in sizes 18-22. A small pheasant tail or egg pattern is a great attractor fly all winter long. Mysis shrimp have also been very productive up high in the town section as a small attractor fly. We still recommend sight fishing and using enough split shot to get your flies in the strike zone so you can present the flies as efficiently as possible. Be ready for the crowds! The Blue in town has been stacked with just about as many anglers as there are fish. Consider heading north or to the Arkansas for more seclusion.