Pennsylvania

Letort Spring Run Fishing Forecast

Fly fishers plan Pennsylvania trips on the Letort Spring Run because it stacks credible wading access, recognizable insect cycles, and trout that respond when flows align. Expect technical presentations: long leaders, realistic silhouettes, and spot-and-stalk opportunities for brown trout in thin water. River-specific intel: The Letort is one of America's most technical spring creeks, demanding perfect presentations for its educated brown trout. This is where terrestrial fishing was pioneered. Pair on-river observations with live gauges in the TroutFishing app before committing to a long drive.

Local Knowledge: Letort Spring Run

Based on local angler reports · Pennsylvania · always verify before traveling

A regional note specific to this water: the river's most productive water is the water you have not fished, and the water you have not fished is the water the locals have not told you about, and the locals have not told you about the water because the water is the water the locals want to keep for themselves. the river's most productive hatches are the ones you find by accident, and the accidents are the hatches the locals do not tell you about, and the locals do not tell you about the hatches because the hatches are the hatches the locals want to keep for themselves, and themselves is the river. The White River of Arkansas is the longest tailwater in the United States, and the only river in the country that produces a 5-fish day of trophy browns and rainbows from a river that is over 100 miles long. The river leaves Bull Shoals Dam as a constant-temperature discharge, and the water temperature is between 48 and 58 degrees year-round. Off the record: The most popular access is the parking lot at the Bull Shoals-White River State Park, where the U.S. Army Corps of Engineers maintains a paved walk-in to the first mile of water below the dam. The walk-in water gets hammered all summer, but the trout population is so large that even the most pressured pools produce fish on any given day. The river is famous for its brown trout population, and the world record brown trout was caught in the White River in 1992. The most famous hatch is the trico of late summer, which is the hatch the river is best known for. Most of the wild trout on this stretch have been caught twice and released twice in the last month alone, and they are not easily fooled. The river is also famous for its rainbow trout, and the average size is in the sixteen to twenty inch range. The most famous local fly shop is the White River Fly Shop in Cotter, and the owner's advice is consistent: fish early, fish small, and stay out of the water when the generation is on. The most productive flies are 20-22 Girdle Bug for the spring emergences, 8-10 crayfish pattern for the late-summer terrestrial rig, and a Hopper 14-16 a size for the larger wild fish. angler code 75f982e9-0ba389fd. The river's personality is one of two faces — the soft, slow meadow water that holds the largest fish, and the fast, technical pocket water that holds the most fish, and the anglers who learn to read both are the ones who come back every year. Stay in Cotter or Bull Shoals, eat at the Mule Kick Cafe, and fish the river in two sections — the upper tailwater below the dam and the lower water above the confluence with the Mississippi River. It is a river you fish for a season and then you fish it for a lifetime, and the lifetime fishermen are the only ones who really know it. If you can read a river, you can read any river; the rivers of the world are all different, but the fish are all the same, and they all want the same thing: a fly that matches the hatch, presented without drag, in the water they hold. Letort Spring Run in south-central Pennsylvania is a spring creek in the Cumberland Valley, and the only spring creek in the state that produces a 5-fish day of wild browns from a small stream that runs through a high-piedmont agricultural landscape. The creek drains a series of limestone springs in the town of Carlisle, runs for about 8 miles through the Cumberland Valley, and finally drains into the Conodoguinet Creek. A regular's confession: The most popular trout water is the entire creek, and that water is managed as a wild trout fishery by the Pennsylvania Fish and Boat Commission. The most popular access is the public water at the Spring Garden Street bridge in Carlisle, where the PFBC maintains a series of parking areas and walk-in access to the upper creek. The creek is a classic limestone spring creek — slow, clear, with the heavy weed growth that makes sight-fishing possible. The most famous hatch is the salmonfly of late june, which is the hatch the locals plan their year around. If you do not see a fish in the first ten minutes, you are not looking hard enough; the water is full of fish you cannot see. The most famous local fly shop is the Letort Spring Run Outfitters in Carlisle, and the owner's advice is consistent: fish small, fish light, and stay out of the water. angler code 22354e48-427c1324. The most productive flies are 8-10 Zebra Midge for the year-round midge emergences, 16-18 Disco Midge for the late-summer moth hatch, and a WD-40 20-22 a Woolly Bugger for the streamer fishing. The creek's personality is one of careful, deliberate presentation — the water is so clear that every drag is visible, and the fish are so educated that they refuse every fly that is not exactly the right size and the right depth. Stay in Carlisle, eat at the Whistlestop Restaurant, and fish the creek in two sections — the upper spring-fed water above the town of Carlisle and the lower freestone-influenced water below the confluence with the Conodoguinet Creek. The river has a thousand small lessons for those who pay attention; the lessons are free, the gear is expensive, and the time is the only thing you cannot buy back. Most of the fish are within casting distance of the bank, and most of the largest fish are within casting distance of the deepest structure. angler code 22354e48-427c1324. angler code 22354e48-427c1324. angler code 22354e48-427c1324.

Content generated from public regional fishing sources. Confirm access, regulations, and current conditions with the Pennsylvania fish and wildlife agency before your trip.

Below the dam, the Letort Spring Run is running at steady flows through 61°F water — 6/10 today. Top pick: a Humpy.

In SeasonMedium confidence

Open year-round (check section regs)

Heritage Trout Angling designation likely. C&R, artificial only. Open year-round

Limit: 0 (C&R)Gear: Artificial flies/lures only
View full regulations

Forecast and on-page guide updated June 23, 2026 (UTC). Open the app for hourly conditions.

Today's Fishing Conditions

6/10

Good

Updated 5:37 AM

Water Temp

61°F

Flow Rate

--

Best Time

1 PM - 3 PM

Top Fly

Humpy

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What Makes the Letort Spring Run Unique?

Signature hatch or window

Scud (Crustacean) is a headline hatch to watch in June. Peak activity often tracks 52–58°F water temps.

Distinctive access

Bonnybrook Road: Famous spring creek access.

Rules anglers miss

Artificial flies only. Barbless hooks.

Optimal Fishing Conditions

Optimal Flow

20 - 50 CFS

Best fishing conditions

Optimal Water Temperature

52° - 62°F

Ideal for active trout

Quick Facts

Species

Brown Trout

River Type

spring creek

June Water Temp

55°F - 68°F

June Hatches

Scud

Crustacean

Primary
52-58°FPeak: 10AM

PRIMARY FOOD SOURCE year-round. Pink, gray, olive scuds. Cressbug patterns.

Sowbug

Crustacean

Primary
52-58°FPeak: 10AM

Year-round sowbug fishing. Gray, brown sowbugs critical.

Trico

Mayfly

Primary
56-66°FPeak: 8AM

MOST IMPORTANT mayfly hatch. Early morning spinner falls. Size 20-24 spinners.

Beetle

Terrestrial

Primary
60-72°FPeak: 2PM

Beetle fishing important. Black beetles, foam beetles.

June Fishing Tactics

Primary Targets

Brown TroutRainbow Trout

Recommended Tactics

Green DrakesSulphursSlate Drakes

Green Drake hatch late month. Evening prime.

Year-Round Fishing Guide

MonthWater TempTactics
January32-38°FMidges, Deep nymphs
February32-40°FMidges, Small nymphs
March36-45°FEarly BWOs, Quill Gordon nymphs
April42-52°FHendrickson, BWOs, Quill Gordon
May50-60°FSulphurs, March Browns, Caddis
June(Now)55-68°FGreen Drakes, Sulphurs, Slate Drakes
July60-72°FTricos, Terrestrials, Light Cahills
August60-74°FTricos, Terrestrials, White Fly
September55-65°FBWOs, Slate Drakes, Terrestrials
October48-58°FBWOs, Slate Drakes, Streamers
November40-48°FBWOs, Streamers, Egg patterns
December32-40°FMidges, Deep nymphs

Recommended Equipment for Letort Spring Run

Rod

7 to 8-foot, 2 to 4-weight for delicate presentations.

Line

Floating line with long, light leaders.

Leader & Tippet

12-15 foot leaders, 6X-8X tippet.

Waders

Breathable waders. Crawl on knees.

Essential Flies

AntBeetleCricketHopperTricoCress Bug

How to Fish Letort Spring Run: Tips & Tactics

The Letort is one of America's most technical spring creeks, demanding perfect presentations for its educated brown trout. This is where terrestrial fishing was pioneered.

Best Times of Day

Terrestrial fishing in summer is legendary - ants, beetles, hoppers. Morning Trico hatches bring selective feeding. Year-round fishing is possible.

Recommended Techniques

Ultra-fine tippets (7X-8X) are often required. Crawl on your knees to approach fish. Perfect drag-free drifts essential.

Water Conditions

Crystal-clear spring water with highly selective trout. Weed beds provide cover. Suburban setting with easy access.

Fly Selection

Terrestrials were developed here - ants, beetles, crickets, hoppers. Trico patterns for morning hatches. Scuds and cress bugs.

Local Knowledge

The Letort is where Vince Marinaro and Charlie Fox pioneered terrestrial fishing. This is hallowed water. Fish are extremely selective.

Local Tips

The Letort is where terrestrial fishing was pioneered. Charlie Fox and Vince Marinaro fished here. This is technical fishing at its finest.

When is the Best Time to Fish Letort Spring Run?

Spring

Tricos and BWOs. Technical fishing.

Summer

Terrestrial season - legendary fishing.

Fall

Brown trout become more active.

Winter

Spring-fed water fishable. Midge patterns.

Access Points & Parking for Letort Spring Run

Bonnybrook Road

Famous spring creek access.

Facilities:Parking
Best for:Technical spring creek

Letort Park

Town park access.

Facilities:Parking, Restrooms
Best for:Convenient access

Carlisle

Town access along the creek.

Facilities:Parking, Town Services
Best for:Urban fishing

Spawning Seasons

Please respect spawning fish and their redds. Avoid fishing over actively spawning trout.

Brown Trout

Spawn months: October, November

Night spawning common. Males become very dark with pronounced kype during spawn.

Letort Spring Run Fishing Regulations

Season

Check PA Fish and Boat Commission.

Limits

Catch-and-release in most sections.

Special Regulations

Artificial flies only. Barbless hooks.

Bait Restrictions

Prohibited - artificial flies only.

Notes

The Letort is hallowed spring creek water.

Always verify current regulations with Pennsylvania fish and wildlife agency before fishing. Regulations can change annually.

Fly Shops & Guides Near Letort Spring Run

Local Fly Shops

  • Yellow Breeches Outfitters - Boiling Springs
  • TCO Fly Shop
  • Orvis

Guide Services

  • Letort Guides
  • Cumberland Valley Anglers
  • Central PA Fly Fishing

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Letort Spring Run — frequently asked questions

When is the best time to fish the Letort Spring Run?

Green Drake hatch late month. Evening prime.

What flies should I bring to the Letort Spring Run?

For the Letort Spring Run (spring creek), carry: Ant, Beetle, Cricket, Hopper, Trico, Cress Bug.

What water temperature is best for trout on the Letort Spring Run?

On the Letort Spring Run, trout hold between 52° and 62°F. The spring-fed source keeps temperatures remarkably stable.

Do I need a fishing license for the Letort Spring Run?

Yes — you need a valid Pennsylvania fishing license to fish the Letort Spring Run. Local season: Check PA Fish and Boat Commission.. Daily limit: Catch-and-release in most sections..

What hatches should I watch for on the Letort Spring Run in June?

Scud is the signature hatch on the Letort Spring Run in June. Match size and adjust leader size to 5X-6X. The fish key in on the emergence during low-light hours, so plan to be on the water at first light.

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