Letort Spring Run – June Stream Report

Location: Cumberland Valley, PA | Report by Precision Fly and Tackle

Get to know Letort Spring Run in August

Letort Spring Run remains a technical, world-renowned spring creek in August. With its lush banks, cold spring-fed water, and wary wild trout, it's a true test of skill. Expect rewarding dry fly and terrestrial action if you bring your A-game.

Sight-fishing opportunities abound, especially for dry-fly purists targeting risers in the slow slicks and undercut banks. Hopper-dropper rigs work in the open stretches, while ant and beetle patterns shine near vegetation and overhangs. The Letort is about finesse, patience, and precision. Spend time watching before casting. You may only get one shot at a feeding fish, so make it count.

Stream Level

• Flow: Low and steady, typically around 20–30 cfs
• Watch: Flows may dip during dry spells—fish will be extra wary in shallows

Water Temperature

• Range: 53-58°F
• Time: Best conditions before 10 AM and after 6 PM with clear conditions

Water Clarity

• Condition: Clear water
• Approach: Long, fine leaders (12–15 ft, 6X–7X), stay out of the water when possible

Fishing Overview

June is the beginning of terrestrial season. Sulphurs continue to be a steady hatch in the evening. Dry dropper or a single small streamer are great options this time of year.

Specifics and Tips

• Best Times: Dawn to 10 AM and 6 PM to dark
• Approach: Focus on observation before presentation—watch for subtle rise forms
• Presentation: Slack-line casts and soft landings win the day
• Wading: Avoid if possible; stealth is critical this time of year

What's Hatching

• Sulphurs (evening activity)
• Caddis (light evening activity)
• Blue-Winged Olives (occasional)
• Terrestrials (great on breezy days)

Fly Patterns to Use

Dries:

• Sulphur Dun - #14-18
• Letort Hopper – #12–14
• Letort Cricket – #14
• Foam Beetle – #16–18
• Parachute Ant – #16–18
• Blue-Winged Olive – #18–20
• X-Caddis – #16–18

Nymphs / Subsurface:

• Zebra Midge – #20–22
• Olive Scud – #14–16
• Cressbugs – #12–16
• WD-40 – #22
• Trico Nymph – #22–24
• Sculpin patterns (early morning and dusk)

Precision Insight

June is a great time to be on the Letort with plentiful hatches. Small streamers on cloudy days or rain tend to produce well. Keep an eye out for terrestrials on the banks and on a breezy day do not be afraid to drop some on low hanging branches.