Big Spring Creek – October Stream Report
Location: Cumberland Valley, PA | Report by Precision Fly and Tackle
Get to Know Big Spring Creek in October
Fall on Big Spring is quiet and rewarding. The spring-fed water stays clear and steady, and the crowds thin out. Big Spring has never been a heavy-hatch stream. Cress bugs and scuds make up most of what the trout eat, and fall adds a return of small olives and midges on overcast days. Big rainbows will still chase a small streamer, so don't leave one at home.
Fishing Clear Water
- Clear water makes fish extra wary.
- Stay back from the bank and keep casts short and soft.
- Use long, fine leaders (12–15 ft, 6X–7X).
- Stay out of the water.
Fishing Overview
October on Big Spring is mostly a subsurface game. Cress bugs, scuds and small nymphs do the most work, with a chance at olives and midges on gray days and a streamer for the bigger fish. Take your time and keep your approach quiet.
Specifics and Tips
- Best Times: Overcast days, and midday when olives start to come off
- Approach: Bank stalking with minimal false casting. Big Spring trout are easily spooked.
- Presentation: A cress bug dropped under a small dry into the little pools is a go-to rig
What's Hatching
- Blue-Winged Olives (best on overcast days)
- Midges (steady through the day)
- Caddis (light, fading activity)
- Terrestrials (occasional on warm afternoons)
Fly Patterns to Use
Dries:
- Blue-Winged Olive – #18–22
- Griffith's Gnat – #20–22
- Parachute Ant – #18–20
- Elk Hair Caddis – #16
Nymphs / Subsurface:
- Cressbugs – #12–16
- Scud – #14–16
- Zebra Midge – #20–22
- WD-40 – #22
- Flashback Pheasant Tail – #18–20
- Green Weenie – #14–16
- Woolly Bugger – #8–12 (olive or black)
- Sculpin patterns (low light and cloudy days)
Know Before You Go
The Catch & Release Fly-Fishing Only section runs from 100 feet below the spring source downstream to the Nealy Road bridge. Below Nealy Road, the creek is open to all tackle under standard trout regulations. Check current regulations with the PA Fish & Boat Commission before you fish.
Precision Insight
October on Big Spring is about patience and small flies. Fish a cress bug or small nymph on overcast days, watch the film for olives and midges, and keep your approach quiet. The Green Weenie remains a Big Spring favorite, especially fished upstream with no indicator.
