Fish Hatchery Road: the old Heritage water
Park at the lot by the Lil-Le-Hi trout nursery on Fish Hatchery Road in the Lehigh Parkway, not at the nursery itself, which posts against angler parking, and you are on the water most people mean when they say the Little Lehigh. The 2026 PFBC summary lists 0.82 mile from the upstream face of the Fish Hatchery Road bridge downstream to near the Oxford Drive bridge as Catch and Release Fly-Fishing Only; older guides and signs call it the Heritage Trout Angling section and give the lower end as the 24th Street bridge. Bogert's covered bridge and the footbridge near Route 309 are the other parking points, and the Parkway's paved trails run both banks.
This is the most pressured stretch of limestone water in eastern Pennsylvania, and it fishes like it. Wild East Outfitters' advice is to sit on the bank and watch before you cast, stay out of the water where you can, wear drab clothing, and make the first cast count because every cast after it lowers your odds. Long leaders to 6X and 7X, flies from 16 down to 24.
Wild Cherry Lane to Millrace Road
The upper fly-only water is 1.54 miles from the downstream face of the Wild Cherry Lane (T-508) bridge to the upstream face of the Millrace Road (T-510) bridge, in Lower Macungie, where Swabia Creek comes in. It is the same regulation as the hatchery stretch, Catch and Release Fly-Fishing Only, and it gets stocked, so it carries rainbows and golden rainbows alongside the wild browns. There is a lot at the Wild Cherry Lane bridge and pull-offs along Krick Lane. It sees a fraction of the Parkway's traffic and is the better bet on a weekend.
The Parkway and the stocked water
Downstream of Oxford Drive the creek runs through the rest of the Lehigh Parkway, past Klines Bridge and Fountain Park, picking up Cedar Creek, Trout Creek and Jordan Creek before it hits the Lehigh River. It is stocked several times a year by the PFBC and takes the hardest hit of any section because the parking is everywhere. Above the Fish Hatchery water, from 0.25 mile above the Country Club Road bridge down to the Fish Hatchery Road bridge, the stream is stocked but any brown trout you catch goes back. Wild East considers Route 29 and below, where the largest springs enter, the best of the creek and says the wild population has slipped over the last 10 to 15 years; it blames the stocking. The Little Lehigh is also a spawning tributary for the Lehigh River's wild browns.
Tricos at first light
Be on the water at dawn from about the Fourth of July through September and you will see what the creek holds. DIY Fly Fishing dates the Trico hatch to the holiday; Wild East says any summer morning until 10 a.m. will bring every fish out to feed on the spinners. Size 22 to 26, 7X, and a fish that refuses your fly ten times is normal. The rest of the calendar from Wild East's month-by-month list for the Lehigh Valley limestoners: midges and scuds every month; Little Black and Little Brown Stoneflies January through April; Blue-Winged Olives March and April and again in October; Blue Quills, Hendricksons and caddis in April; Pale Evening Duns, Sulphurs and Light Cahills in May and June; ants, beetles, crickets and hoppers from July through September. Because the water rarely leaves the 50s, winter midging is real fishing here, not a novelty.
Two fly-only stretches, two no-kill-for-browns stretches
From the 2026 PFBC summary. Catch and Release Fly-Fishing Only, open year-round, 24 hours, artificial flies and streamers only, no trout may be killed or possessed: Little Lehigh Creek, 1.54 miles from the downstream face of the bridge on T-508, Wild Cherry Lane, to the upstream face of the bridge on T-510, Millrace Road; and Little Lehigh Creek, 0.82 mile from the upstream face of the Fish Hatchery Road bridge downstream to near the Oxford Drive bridge. Barbless hooks are the local custom on the hatchery stretch and were the rule under the old Heritage regulation.
Miscellaneous Special Regulations, all tackle permitted: from the confluence with Spring Creek downstream to the Wild Cherry Lane bridge, and from 0.25 mile upstream of the Country Club Road bridge downstream to the Fish Hatchery Road bridge, brown trout are catch and release at all times; other trout species are 7 inches and 5 per day from 8 a.m. on opening day (April 4 in 2026) through Labor Day, then no harvest until the third Sunday in February, with the water closed to all fishing from the third Monday in February until 8 a.m. on opening day. Everything else on the creek is under inland rules.
Flow on a spring creek: the near-Allentown gauge
No shop publishes a wading range for the Little Lehigh because you should not be wading much of it. The number to watch is clarity, and the gauge tells you that: the USGS record at the near-Allentown gauge in the Parkway shows a median of about 60 to 125 cfs across the year, 85 to 125 from January through May and 60 to 75 from July through October, with the 10th percentile around 36 to 63. This page compares the live gauge to 40 to 120 cfs, which is the band the creek lives in most of the time; a reading well above it after a storm means Jordan and Cedar Creeks have muddied the Parkway, and a reading below 40 in August means low, gin-clear water and fish that see everything. Spring flow keeps the temperature under 68 in summer and above freezing in winter.