What You'll Find at LeTort Spring Run

LeTort Spring Run is a limestone spring creek in Cumberland County, Pennsylvania, roughly 8 miles long, that flows from its source near Boiling Springs through Mechanicsburg before joining the Conodoguinet Creek. The stream is known for clear, cold water year-round — fed by limestone springs that keep temperatures stable — and a population of wild brown trout. The water clarity and consistent conditions make it a technical fishery where trout see a lot of pressure and respond to precise presentations.

The creek holds both wild browns and stocked trout, though the wild population is what draws most serious anglers. Fish here are selective and often small to medium-sized, rarely exceeding 14 inches, but they are present in good numbers in the deeper pools and undercut banks. The limestone geology means the water is alkaline and productive, supporting robust aquatic insect populations that keep trout feeding throughout the season.

Key Takeaways

  • LeTort Spring Run holds wild brown trout in clear, cold limestone water that stays fishable year-round, but trout are selective and require small flies and careful presentation.
  • Public access is limited to specific sections; the Boiling Springs area and Mechanicsburg sections have marked public water, while much of the stream runs through private land.
  • Fly fishing with small nymphs, dry flies, and streamers is the standard method; spin fishing is allowed but less common due to the stream's technical nature.
  • Pennsylvania trout season runs year-round on LeTort, but spring (March through May) and fall (September through November) are peak times for both water conditions and insect activity.
  • You will need a Pennsylvania fishing license and a trout stamp; check current regulations for any special restrictions on this specific stream before you go.

Access Points and Where to Fish

Public access on LeTort Spring Run is concentrated in two main areas. The Boiling Springs area, near the source, has a small parking area and public water managed by the Boiling Springs Fish and Game Association. This section is popular and can be crowded on weekends, but it holds good numbers of trout and is a reliable starting point if you are unfamiliar with the stream.

The Mechanicsburg section, downstream, has public access near the town itself, with parking and marked public water. This stretch is slightly less crowded than Boiling Springs and offers a mix of pool and run habitat. Between these two areas, much of the stream flows through private property, and access is restricted unless you have permission from the landowner.

The stream is small — typically 20 to 40 feet wide — so wading is straightforward in most places, though the limestone bottom can be slippery. Water levels are stable due to the spring-fed nature, so seasonal fluctuations are minimal compared to freestone streams. This consistency is one reason the trout are so selective; they see the same flies and presentations repeatedly.

Seasons and Water Conditions

LeTort Spring Run is open year-round under Pennsylvania regulations, but fishing quality varies by season. Spring (March through May) brings increased insect activity — particularly small mayflies and caddisflies — and water temperatures in the 45–55°F range. This is when the stream is most productive, though runoff from rain can cloud the water temporarily.

Summer (June through August) sees water temperatures climb into the upper 60s, which can stress trout during the hottest weeks. Early morning and evening fishing is most productive; midday can be slow. The water remains clear, but trout often retreat to deeper pools and spring-fed side channels where the water stays cooler.

Fall (September through November) is excellent. Water temperatures drop back into the 50s, trout become more active, and fall mayfly hatches bring consistent feeding. October and early November are often the best months of the year on this stream. Winter (December through February) is fishable but slower; water temperatures hover in the 40s, and insect activity drops. Winter fishing requires patience and small flies, but it can produce if you time it right.

Fly Patterns and Techniques

Trout on LeTort Spring Run are accustomed to heavy fly pressure, so patterns must be small and presentations must be precise. Nymphs are the workhorse — size 16 to 20 Pheasant Tail, Hare's Ear, and Copper John patterns work year-round. Fish these on a dead drift close to the bottom in pools and runs. A strike indicator is standard; watch for the slightest hesitation.

Dry flies are effective during hatches and when trout are actively feeding on the surface. Small patterns — size 18 to 22 — in Adams, Pale Morning Dun, and Caddis imitations match the natural insects. Trout here are selective about size and color, so having multiple patterns in your box is important. Fish dries during the morning and evening when hatches are most active.

Streamers can be productive, especially in fall and winter when trout are more aggressive. Small patterns in black, brown, and olive, fished on a tight line or with a slow strip, can draw strikes from larger fish. Streamers are less common on LeTort than nymphs and dries, but they are worth trying if you want to target bigger trout.

Spin fishing is legal but uncommon; the stream is narrow and technical, and fly fishing is the dominant method. If you spin fish, small spoons and spinners in sizes 1 to 3 can work, particularly in deeper pools.

Regulations and Licensing

You will need a Pennsylvania fishing license and a trout stamp to fish LeTort Spring Run. Licenses are available online through the Pennsylvania Fish and Boat Commission website, at sporting goods retailers, and at some convenience stores. A one-day license is available if you want to try the stream without committing to an annual license.

LeTort Spring Run follows standard Pennsylvania trout season regulations: open year-round with a daily limit of five trout. However, check the current Pennsylvania Fish and Boat Commission regulations before you go, as special restrictions or catch-and-release sections may apply to specific areas of the stream. Some sections may have different rules, and regulations can change.

Barbless hooks are not required on LeTort, but many anglers use them anyway to reduce injury to fish and to make catch-and-release easier. The stream is not designated as a special regulation area, so standard trout regulations apply.

What to Expect and How to Prepare

LeTort Spring Run is a technical stream that rewards patience and precision. Trout are abundant but selective, and you may spend an hour catching two or three fish. This is not a high-volume fishery; it is a place to practice your technique and enjoy the clarity of the water and the beauty of the limestone valley.

Bring a good pair of polarized sunglasses — the clear water makes spotting trout possible if you know how to look, and you can often see fish before you cast. A small fly box with nymphs and dries in sizes 16 to 22 is essential. Waders are recommended even in summer, as the water is cold year-round and wading in shorts limits your access to the best holding water.

The stream is close to Harrisburg and Mechanicsburg, so it is accessible for a day trip. Parking is limited at both public access points, so arrive early on weekends. The area is popular with local anglers, so expect company during peak seasons, particularly on Saturday and Sunday mornings.

Nearby Streams and Alternatives

If you fish LeTort Spring Run and want to explore other options in the region, the Conodoguinet Creek (into which LeTort flows) is a larger limestone stream with similar trout populations and more public access. The Conodoguinet is less technical than LeTort and can be a good option if you want a change of pace or if LeTort is crowded.

The Yellow Breeches Creek, also in Cumberland County, is another limestone spring creek with excellent trout populations and more public access than LeTort. It is slightly larger and offers a mix of technical and easier water. Both streams are within 20 minutes of LeTort, so a day trip can include multiple streams if you want to move around.

Frequently Asked Questions

Can I fish LeTort Spring Run in winter?

Yes, the stream is open year-round. Winter fishing is slower and requires patience, but trout are still present and feeding. Water temperatures stay in the 40s due to the spring-fed nature, so the stream does not freeze solid. Small nymphs and streamers are most effective.

Do I need to hire a guide to fish LeTort Spring Run?

No, the stream is open to the public in the marked access areas, and you can fish it on your own. A guide can be helpful if you are new to technical limestone streams or want to learn the specific holding water, but it is not necessary. Local fly shops in the area can point you to productive sections.

What is the best time of year to fish LeTort Spring Run?

Spring (March through May) and fall (September through November) are the most productive seasons. Fall is often considered the best, with cooler water temperatures, active trout, and consistent hatches. Summer can be slow during the day due to warm water, and winter is fishable but requires more effort.

Are there bigger trout on LeTort Spring Run?

Most trout on LeTort are 8 to 12 inches, with occasional fish to 14 inches. Larger trout are present but uncommon. Fishing streamers and focusing on deeper pools and undercut banks increases your chances of connecting with a bigger fish, but this is not a stream known for trophy-sized trout.

What fly shop is closest to LeTort Spring Run?

Several fly shops serve the Harrisburg and Mechanicsburg area and stock flies and gear specific to LeTort and other local streams. A quick search for fly shops near Mechanicsburg or Boiling Springs will show current options. Local shops can also provide up-to-date information on recent hatches and conditions.