Big Spring Creek
Big Spring Creek is a pristine limestone spring creek flowing through Cumberland Valley with exceptional water clarity, large wild brown trout, and highly technical fishing. This short but legendary creek is considered one of the most challenging spring creek destinations in Pennsylvania, demanding expert presentation and stealth from anglers.
Overview
Big Spring Creek flows only about 6 miles from its source at Big Spring in Newville to its confluence with the Conodoguinet Creek, but those 6 miles contain some of the most pristine and challenging spring creek fly fishing in the eastern United States. The creek rises from a massive limestone spring that produces approximately 25 million gallons of water per day, creating a stable flow and constant temperatures year-round.
The most famous section is approximately 1 mile of catch-and-release water managed by the Pennsylvania Fish and Boat Commission. This regulated stretch features gin-clear water (often 15+ feet of visibility), lush weed beds, stable flows (60-100 cfs year-round), and wild brown trout that have seen countless flies. The creek averages 20-30 feet wide through this section with depths ranging from ankle-deep riffles over gravel to waist-deep pools.
Wild brown trout in Big Spring Creek grow to impressive sizes on the abundant food supply. Fish in the 14-18 inch range are common in the catch-and-release section, and trout exceeding 20 inches are caught regularly by skilled anglers. These fish are extremely selective, having been educated by heavy fishing pressure and perfect water clarity that allows them to inspect every fly at leisure.
Big Spring Creek supports prolific hatches including Sulphurs, Tricos, Blue Winged Olives, and caddis, along with abundant populations of scuds, sowbugs, and freshwater shrimp. This is advanced spring creek fishing requiring long leaders (15-18 feet), fine tippets (6X-8X), perfect drag-free drifts, and infinite patience. Many experienced anglers consider Big Spring more challenging than Spring Creek due to the extreme clarity and educated trout.
Water Characteristics
Big Spring Creek is the archetype of a limestone spring creek, rivaling Spruce Creek for water quality and clarity. Fed by a massive underground spring producing 25 million gallons daily, the creek maintains nearly constant flow (60-100 cfs) and temperature (48-55 degrees F) year-round. Water clarity is exceptional, often exceeding 15 feet of visibility, making this one of the clearest fishable streams in Pennsylvania.
The creek bottom supports thick beds of watercress and other aquatic vegetation providing habitat and food. Scuds, sowbugs, cress bugs, and freshwater shrimp populations are exceptionally dense. The insect community includes prolific mayfly hatches (Sulphurs, Tricos, Blue Winged Olives, Hendricksons), caddisflies, and midges. The limestone water's fertility and stable conditions produce extraordinary insect densities.
The wild brown trout population is among the finest in the East. The combination of limestone fertility, stable temperatures, abundant food, and protective management in the catch-and-release section produces trout of exceptional size and condition. These fish are extraordinarily selective and educated from heavy fishing pressure and perfect visibility.
Wading & Float Guide
Big Spring Creek offers physically easy but tactically demanding wading. The limestone bottom is clean gravel and silt with thick weed beds and gentle current. Water depth rarely exceeds waist-deep, and the constant flow (60-100 cfs year-round) means stable, predictable wading conditions. Footing is secure on the gravel bottom, though algae on rocks can be slippery in summer.
The tactical challenge is extreme stealth in the crystal-clear water (15+ feet of visibility). Trout can see approaching anglers from far away, and every ripple, footstep, and shadow alerts wary fish. Many experienced anglers fish from the bank, crouching or kneeling to maintain a low profile. Wading creates unavoidable disturbance; minimizing that disturbance is critical. Silt plumes from careless footsteps put fish down for hours.
Hip waders are sufficient for most of Big Spring Creek during normal conditions. The stable spring-fed flow eliminates dangerous wading situations, but the tactical demands require advanced skills. This is not a creek for learning to wade; it is a destination for experienced anglers testing their stealth and presentation skills.
Not a float fishery
Big Spring Creek is too small for floating. This is strictly wade-fishing water accessed from limited public access points.
Rod & Tackle Guide
Catch-and-Release Section
- Rod
- 9' 3-weight or 4-weight
- Line
- Weight-forward floating, double taper preferred for delicate presentations
- Leader & Tippet
- 15-18' tapered to 6X-8X fluorocarbon (sometimes 9X for Tricos)
Light rod essential for delicate tippets and presentations. Extra-long leader mandatory for spooky trout in gin-clear water. Bring multiple tippet spools (6X, 7X, 8X, possibly 9X). Polarized sunglasses with amber or copper lenses critical for spotting fish.
Seasonal Fishing Guide
Spring
Spring brings prolific Sulphur hatches to Big Spring Creek beginning in mid-May and lasting through June. The emergences typically occur from 6 PM to dark with spinner falls the following morning. Hendrickson hatches occur in late April. Blue Winged Olives hatch on overcast spring days. Nymphing with tiny scuds, sowbugs, and small mayfly nymphs (size 18-22) is productive between hatches. Use 6X-8X tippet for all fishing. Perfect drag-free drifts are mandatory.
Summer
Summer is defined by morning Trico spinner falls from July through September, typically occurring between 7 AM and 10 AM. These are tiny insects (size 22-26) demanding precise imitations, ultra-fine tippets (7X-8X), and delicate presentations. Terrestrial patterns (ants, beetles) work along banks in afternoons, though trout remain highly selective. The spring-fed water maintains ideal temperatures (52-58 degrees F) even during summer heat, keeping trout active. Midday fishing can be slow; focus on mornings and evenings.
Fall
Fall brings outstanding Blue Winged Olive hatches to Big Spring Creek from September through November. The overcast afternoons of autumn trigger reliable emergences. Brown trout feed aggressively preparing for spawning (late October through November; avoid redds). Fishing pressure decreases after summer. October combines excellent hatches with autumn colors and eager trout. This is many experienced anglers' favorite time on Big Spring.
Winter
Big Spring Creek's constant spring-fed water rarely freezes and maintains fishable temperatures year-round (48-52 degrees F). Winter fishing focuses on midges (size 24-28) hatching on mild days between 11 AM and 2 PM. Blue Winged Olives can hatch on warmer winter afternoons (40+ degrees F air temperature). Nymphing with tiny scuds, midge larvae, and sowbugs works throughout winter. Dress warmly in layers and fish the warmest part of the day. Pressure is minimal in winter, offering rare opportunities for solitude.
Fishing Pressure & Local Tips
Big Spring Creek's catch-and-release section receives very heavy fishing pressure year-round, particularly during major hatches. The short section (approximately 1 mile) concentrates anglers in a small area. During Sulphur and Trico hatches, the most productive runs may have multiple anglers. Parking is limited, and the creek can feel crowded on weekends and during peak hatches.
The fish here are among the most selective and educated in Pennsylvania, having seen thousands of perfect casts and presentations. Refusals are common even with excellent technique. Success rates are lower than on less-pressured waters, but the challenge and quality of fish draw dedicated anglers. Weekday fishing offers somewhat more solitude, though the creek is never empty during the fishing season.
Local Knowledge
Big Spring Creek demands the highest level of spring creek fishing skills. Long leaders (15-18 feet), fine tippets (6X-8X, sometimes 9X for Tricos), and absolutely perfect drag-free drifts are mandatory. Approach feeding fish from downstream and behind, staying low or kneeling. Many experienced anglers fish from the bank to avoid wading disturbance. Watch for rises for several minutes before casting; blind casting alerts fish to your presence.
Match the hatch precisely in size, color, and stage of emergence. During Trico and Sulphur hatches, trout will refuse patterns even one size off. Perfect presentation trumps fly pattern every time; a size 20 parachute Adams presented drag-free will out-fish a perfect Trico imitation with micro-drag. Consider this a Ph.D. program in spring creek fishing. The rewards are commensurate with the difficulty: wild brown trout of exceptional quality in pristine water. Local experts strongly recommend hiring a guide for first-time visits.
Species Present
Brown Trout
The brown trout is the most cunning and elusive trout species swimming in Montana's rivers, and it rewards patient, skilled anglers with some of the state's most memorable catches. Originally native to Europe and western Asia, brown trout were first introduced to North American waters in 1883 and arrived in Montana shortly thereafter. They have since established robust, self-sustaining populations in virtually every major trout stream in the state, from the legendary spring creeks of the Paradise Valley to the sweeping runs of the lower Madison and the deep pools of the Bighorn. Brown trout grow larger than any other trout species in Montana, and fish exceeding 24 inches are caught with regularity on premium waters. The lower Madison River, the Missouri River below Holter Dam, and the Bighorn River are particularly renowned for producing trophy-class browns. Unlike rainbows, brown trout spawn in the fall (October through November), and their aggressive pre-spawn behavior creates an exciting window for streamer fishing as large males become territorial and attack anything that enters their domain. Browns are notably more nocturnal than other trout species, and many of the biggest fish are caught during low-light conditions. What sets brown trout apart from other species is their wariness and selectivity. Large browns are notoriously difficult to fool, often refusing flies that are even slightly off in size, color, or presentation. They tend to establish and defend prime feeding lies (undercut banks, logjams, deep pools, and boulder gardens), and an angler who learns to read water and identify these holding spots will consistently catch more and larger fish. This combination of difficulty, size potential, and intelligence makes the brown trout the most prized quarry for many serious Montana fly fishers.
Brook Trout
The brook trout is widely considered the most beautiful freshwater fish in North America, and catching one in a pristine Montana mountain stream is an experience that captures the essence of backcountry fly fishing. Despite their common name, brook trout are not true trout at all; they are a species of char (genus Salvelinus), more closely related to lake trout and Arctic char than to rainbows or browns. Native to eastern North America from Georgia to Hudson Bay, brook trout were among the first salmonids introduced to Montana's waters in the late 1800s and have since established self-sustaining populations in cold, high-elevation streams and lakes throughout the state. In Montana, brook trout thrive best in small, cold headwater streams and high mountain lakes where competition from larger trout species is minimal. In these environments, they are often the dominant, or only, salmonid present. The trade-off is size: Montana stream-dwelling brook trout typically range from 6 to 10 inches, with fish over 12 inches considered noteworthy in most waters. What they lack in size, however, they more than make up for in beauty and willingness to eat a fly. Brookies are aggressive feeders that will strike attractor dry flies, nymphs, and small streamers with enthusiasm, making them an ideal species for beginning fly anglers and a delightful quarry for anyone who appreciates small-stream fishing. Brook trout do present a conservation paradox in Montana. While they are a beloved and beautiful gamefish, they are non-native and can negatively impact native species, particularly Yellowstone and westslope cutthroat trout. In headwater streams, brook trout often outcompete cutthroats for food and spawning habitat due to their higher reproductive rate and earlier maturation. As a result, Montana FWP has implemented brook trout removal projects on some streams to restore native cutthroat populations. In many waters, liberal harvest limits for brook trout are encouraged to reduce their numbers and benefit native fish. Anglers can enjoy excellent brook trout fishing while actively helping conservation by keeping a few for the pan.
Rainbow Trout
The rainbow trout is Montana's most widespread and popular gamefish, celebrated for its explosive surface strikes, aerial acrobatics, and willingness to take a well-presented dry fly. Native to Pacific Coast drainages from Alaska to Mexico, rainbows were first introduced to Montana's waters in the late 1800s and have since established thriving populations in nearly every major river system in the state. On legendary waters like the Madison, Missouri, and Bighorn, wild rainbow trout grow fat on prolific insect hatches and provide some of the finest dry-fly fishing in North America. Rainbow trout in Montana display remarkable variation depending on their home water. Fish in nutrient-rich tailwaters like the Missouri River below Holter Dam can exceed 20 inches with regularity, their deep bodies and broad tails reflecting the abundant food supply. Freestone river rainbows, such as those in the upper Madison and Gallatin, tend to be leaner and more athletic, shaped by faster currents and colder water temperatures. In many Montana rivers, rainbows spawn in the spring from March through June, and anglers should be mindful of spawning redds during this period to protect future generations of fish. Rainbows are arguably the most versatile trout species for fly anglers. They respond well to dry flies during hatches, aggressively chase streamers, and feed heavily on nymphs subsurface throughout the year. Their fighting ability is legendary: a hooked rainbow will often launch itself completely out of the water multiple times during a battle. Montana's catch-and-release regulations on many blue-ribbon streams have produced exceptional rainbow trout fisheries with high densities of large, healthy fish that continue to draw anglers from around the world.
Hatch Chart
| Insect | Suggested Fly | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Sulphurs (Ephemerella) evening | PMD Comparadun | ||||||||||||
Tricos morning | Trico Spinner | ||||||||||||
Blue-Winged Olive (Baetis) afternoon | RS2 | ||||||||||||
Blue-Winged Olive (Baetis) afternoon | BWO Emerger | ||||||||||||
Hendricksons afternoon | Parachute Adams | ||||||||||||
Caddisflies (various) evening | CDC Caddis Emerger | ||||||||||||
Midges morning | Zebra Midge | ||||||||||||
Scuds and sowbugs all day | Ray Charles |
Sulphurs (Ephemerella): Prolific Sulphur hatches mid-May through June. 6 PM to dark. Size 16-18.
Tricos: Dense morning spinner falls July-September. 7 AM to 10 AM. Size 22-26.
Blue-Winged Olive (Baetis): Spring BWOs on overcast days. Size 18-22.
Blue-Winged Olive (Baetis): Fall BWOs dominant September-November. Size 18-22.
Hendricksons: Late April Hendrickson hatches. Size 12-14.
Caddisflies (various): Evening caddis emergences. Size 16-18.
Midges: Year-round midge activity. Size 24-28.
Scuds and sowbugs: Abundant in weed beds year-round. Size 14-18.
Recommended Flies
Zebra Midge
Top PickYear-round midge essential
Best in winter
RS2
Top PickRS2 for BWO and midge emerger
Best in spring
Trico Spinner
Top PickTrico spinner for morning falls
Best in summer
PMD Comparadun
Top PickSulphur Comparadun for prolific hatches
Best in spring
BWO Emerger
Top PickBWO emerger for fall hatches
Best in fall
Ray Charles
Top PickScud/sowbug year-round
Best in winter
Pheasant Tail Nymph
Top PickPheasant Tail nymph
Best in spring
Also Effective
Access Points & Boat Launches
Newville Access (Catch-and-Release)
Wade AccessEasy (physically), Advanced (fishing)Primary and very limited access to Big Spring Creek catch-and-release section near Newville. Parking is extremely limited and the section is short (approximately 1 mile). This is some of the most technically demanding spring creek fishing in Pennsylvania with gin-clear water and highly selective wild brown trout. Respect private property boundaries.
Regulations
Regulations
Big Spring Creek catch-and-release section: Year-round catch-and-release, artificial lures only, no fishing from 9 PM to 5 AM. Other sections follow Pennsylvania regulations. Check current Pennsylvania Fish and Boat Commission regulations at fishandboat.com. Pennsylvania fishing license required. Access is limited; respect private property boundaries.
Always verify current regulations with Montana Fish, Wildlife & Parks before fishing.
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Quick Facts
- Region
- South Central Pennsylvania / Cumberland County
- Water Type
- Limestone Spring Creek
- River Length
- 6 miles total; approximately 1 mile of catch-and-release water
- Difficulty
- Advanced
- Best Seasons
- spring, summer, fall, winter
- Trout Per Mile
- 2,000-3,000 wild brown trout; exceptional average size
- Record Trout
- Brown trout exceeding 24 inches documented; fish over 6 lbs have been caught in the catch-and-release section
- Species
- Brown Trout, Brook Trout, Rainbow Trout
Nearby Rivers
Penns Creek
Central Pennsylvania / Centre County
Spring Creek
Central Pennsylvania / Centre County
Little Juniata River
Central Pennsylvania / Blair County
Spruce Creek
Central Pennsylvania / Huntingdon County
Big Fishing Creek
North Central Pennsylvania / Columbia County
Yellow Breeches Creek
South Central Pennsylvania / Cumberland County
Kettle Creek
North Central Pennsylvania / Clinton County
Slate Run
North Central Pennsylvania / Lycoming County
Tulpehocken Creek
Southeastern Pennsylvania / Berks County