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 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.
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River Flow (Cubic Feet Per Second):
Flows have risen from 400 to near 800CFS this week. These could be near peak flows for the blue in town this spring
Water Temperature (degrees F):
low 40's, typical bottom release temperatures from Dillon Reservoir.
Crystal clear most of the time, fresh snow combined with warm temps, or rapid rise in flow can cause off color water.
Current Food Sources:
midges | Baetis | Mysis Shrimp | micro caddis larva | small golden stonefly nymphs | eggs | worms |
Flies to Try:
Guides Choice Dozen $24.99
Epoxy Mysis size 18-20 | Mayer's Mysis size 18-20 | Solitude Mysis Srimp size 16, 18, 20 | Pheasant Tail black size 18-22 | Poison Tung olive/black size 18 | Mercury Black Beauty size 18-24 | Pure Midge cream | UV Midge black size
Parachute Adams size 16-24 | Griffith’s Gnat size 18-24 | Umpqua Adult Midge Dark 20-22 | CDC Morgan's Midge size 20-22 | Fowler’s Biot Midge black size 20-24
Near Nuff Sculpin olive size 04-06 | Super Bugger Tan size 6 | Pop’s Bugger pearl/grizzly size 8 | Pine Squirrel Leech in black size 12 | Slump Busters in olive and natural | Crystal Bugger white sizes 8-12 | Halebop Leech wine no bead size 8
guide tip of the week:
As more water is released from Dillon Reservoir, more Mysis Shrimp enter the river system. This is a good time to fish Mysis patterns. Higher flows, also stir up more bugs from the river bottom than usual, such as golden stoneflies and cranefly larva.
A look at the water through town at 700 CFS...
After a bump in release from Dillon Reservoir, the flows have leveled out at about 400 CFS, and the river in town was nice and clear this Morning (5/8).
Flows from Dillion Reservoir where increased yesterday evening, and the water was a bit off color.
Picture 1 is a specimen of the Baetis nymphs currently found in town, we are seeing a ton of these in sizes 20-24.
Pictures 2 and 3 are from Michelle's outing on the Blue...... Sighting (the trout is underlined in black), and catching a brood stock rainbow trout on a black Crystal Bugger.