Los Pinos River

Its about gametime above Vallecito. Get your hiking boots on, get out early, and get after it. Dry/droppers tend to be a good setup through the summer, but full nymph rigs in the deeper holes if nothing is rising. Look for caddis and stonefly hatches with mayflies showing up as well.
The outflow of the dam is high but steady, and fishing will be decent. With the higher flows below, fishing a heavy nymph rig with worms, stonefly nymphs, or a mop.

Patterns/Bugs:
Nymphs: Prince nymphs 14-18, Pats Rubberlegs 8-12 or Jigged Pats 8-12, Black and Blue Copper Johns 14-18, Pheasant tails 18-22, Juju Baetis 18-20, Disco Midge 18-20, Rainbow Warrior 18-22. San Juan Worms.
Stonefly Dries: Stimulators #6-12, Rogue Foam Stone #4-8, Sofa Pillow #4-10, Chubbies 6-12.
Caddis #14-16: Barrs Graphic Caddis, Prarie Dog Pupa, RIOs Big Boned Caddis, Elk Hair Caddis, Parachute Caddis

Above Vallecito the flows are still a bit pushy, but cold and clear.
Below, the outflow of the dam has been raised, and fishing will be decent. With the higher flows below, fishing a heavy nymph rig with worms, stonefly nymphs, and baetis is a good idea.

Patterns/Bugs:
Nymphs: Prince nymphs 14-18, Pats Rubberlegs 8-12 or Jigged Pats 8-12, Black and Blue Copper Johns 14-18, Pheasant tails 18-22, Juju Baetis 18-20, Disco Midge 18-20, Rainbow Warrior 18-22. San Juan Worms.