What Lower Greens Run Offers

Lower Greens Run is a limestone creek in Perry County, Pennsylvania, that holds smallmouth bass and a native population of brook trout in its upper reaches. The stream runs clear most of the year, with a moderate gradient and plenty of structure—undercut banks, fallen timber, and rocky ledges—that hold fish predictably. Access is straightforward from several road crossings, and the water is fishable year-round, though spring and fall are the most reliable seasons for consistent action.

The lower section, which is what most anglers fish, runs roughly 6 miles from the PA Route 274 crossing near Ickesburg downstream to its confluence with the Juniata River. This stretch is wide enough to wade in most places but narrow enough that you can cover water efficiently without spending half your day moving between spots. The limestone geology keeps the water cool and stable, which matters for both the smallmouth and the trout that hold here.

Key Takeaways

  • Lower Greens Run holds smallmouth bass year-round and native brook trout in the upper sections, with the best fishing from March through May and September through October.
  • Access points exist at PA Route 274 near Ickesburg, at Shermans Valley Road, and at several farm crossings downstream, all reachable within an hour of Harrisburg or Carlisle.
  • The stream is wadeable in most places, with depths ranging from 2 to 6 feet in the main channel and plenty of shallow flats and pocket water for sight-fishing.
  • Smallmouth respond to crawfish patterns and small crankbaits in spring; brook trout prefer small nymphs and dry flies in the upper reaches during summer low water.

Seasonal Patterns and What to Expect

Spring (March through May) is when Lower Greens Run fishes best. Smallmouth move shallow to spawn, and the water temperature climbs into the 50s and 60s, triggering feeding. Crawfish imitations—tubes, craws, and small jigs—work consistently. The upper creek above Route 274 holds brook trout that are active during this window, and you can sight-fish to them in the clearer water if you move slowly and keep your shadow off the stream.

Summer brings lower water and warmer temperatures, especially by July and August. The smallmouth retreat to deeper holes and undercut banks. Brook trout in the upper sections become selective and move to the coldest water they can find—usually near springs or in the deepest pools. Early morning and late evening are your only reliable windows. Small nymphs fished tight to the bottom work better than anything flashy.

Fall (September through October) is nearly as good as spring. Water temperatures drop back into the comfortable range, smallmouth feed aggressively again, and the creek clears after summer algae growth. This is also when you might encounter spawning brook trout in the upper reaches, though regulations on that vary—check the current Pennsylvania fishing guide before targeting them.

Winter is fishable but slow. Smallmouth are lethargic, and brook trout are deep. If you go, fish the deepest holes and move slowly. Nymphs and small jigs are your only realistic options.

Access Points and How to Reach Them

The most popular access is at PA Route 274 near Ickesburg, about 30 minutes south of Carlisle. There is a small pull-off on the north side of the road where the creek runs under the bridge. Parking is tight—room for maybe three or four vehicles—and the bank is steep, but it puts you directly into productive water. From here you can fish upstream into the upper creek or downstream toward Shermans Valley Road.

Shermans Valley Road crosses the creek roughly 2 miles downstream of Route 274. There is a wider shoulder here and easier bank access, though you will need to ask permission at the nearby farm before parking. This section is wider and deeper than the upper creek, with more smallmouth and fewer trout.

A third option is the Juniata River confluence area, accessible from Ickesburg Road on the south bank. This is where Lower Greens Run meets the Juniata, and it can hold larger smallmouth, especially in spring. The walk is longer, and you are closer to the main river, but the fishing can be worth it if you want bigger fish.

All three access points are on public roads, and fishing from the road shoulder is legal. Always ask at nearby farms before crossing private land to reach the water.

What Gear and Tackle to Bring

A 6- to 7-foot medium-light spinning rod works for everything on Lower Greens Run. Pair it with 6- to 8-pound monofilament or braided line—the water is clear, but the limestone bottom is rough and you will lose tackle. For smallmouth, bring crawfish tubes (2 to 3 inches), small crankbaits in natural colors, and 1/8- to 1/4-ounce jigs. For brook trout, pack small nymphs (size 14 to 18) in olive, tan, and black, plus a few dry flies in size 16 and 18 if you want to fish the surface.

Wading boots with good grip are essential—the limestone is slippery when wet, and the bottom is uneven. A wading staff helps in the deeper sections. Polarized sunglasses are worth their weight; the water is clear enough that you can sight-fish to both smallmouth and trout if the sun is right.

Bring a net if you plan to keep fish. The banks are steep in places, and trying to land a 14-inch smallmouth by hand on a slick limestone ledge is a good way to lose it.

Regulations and What You Need to Know

Lower Greens Run is in Perry County and follows Pennsylvania's general statewide regulations. You need a valid Pennsylvania fishing license, which you can purchase online through the Pennsylvania Fish and Boat Commission website or at any sporting goods store. A one-day license costs less than a full-year license if you are just trying the stream once.

Smallmouth bass have a 12-inch minimum length and a 5-fish daily limit. Brook trout have a 7-inch minimum and a 5-fish daily limit. Check the current Pennsylvania fishing guide before you go—regulations can change, and there may be special rules for specific sections of the creek.

The stream is open year-round for smallmouth. Brook trout season runs from the second Saturday in April through Labor Day, though the upper creek may have different dates. Verify the exact dates in the current guide.

When to Fish and How to Plan Your Trip

Lower Greens Run is close enough to Harrisburg and Carlisle that you can fish it on a half-day trip. Most anglers fish from sunrise to mid-morning in spring and fall, then again in the late afternoon. Summer requires early morning or dusk fishing if you want consistent action.

The stream is rarely crowded, even on weekends. You might see one or two other anglers, but you will usually have long stretches to yourself. This makes it a good choice if you want to practice sight-fishing or work on your technique without pressure.

Plan for 2 to 3 hours of fishing per access point. The creek is not long, and you can cover most of a section thoroughly in that time. If you want to fish multiple sections in one trip, plan for a full day and bring lunch.

Frequently Asked Questions

Can I fish Lower Greens Run in winter?

Yes, the stream is open year-round for smallmouth. Winter fishing is slow, though—water temperatures drop into the 30s and 40s, and fish are deep and inactive. If you go, fish the deepest holes and move slowly. Expect to catch fewer fish than in spring or fall.

Are there bigger smallmouth in the lower sections near the Juniata?

Yes. The lower creek and the confluence area hold larger smallmouth than the upper sections, especially in spring when they move shallow to spawn. The trade-off is that you see fewer fish overall and the walk is longer.

What is the best time to fish for brook trout on Lower Greens Run?

Spring (March through May) and early fall (September through October) are best. Summer is difficult because the water warms and trout retreat to the coldest holes. Fish early morning or late evening if you go in summer.

Do I need to cross private land to reach the stream?

Not at the main access points. Route 274 and Shermans Valley Road are public road crossings. If you want to fish between access points, you will need to ask permission at nearby farms first.

What should I do if the water is high or muddy?

High water after rain makes the creek harder to fish—smallmouth become less active, and sight-fishing is impossible. Wait a day or two for the water to clear. Muddy water usually clears within 24 to 48 hours on a limestone creek like this one.