Montana · Spring creek · Rockies
Big Spring Creek — Lewistown
Spring creek with public-access reaches.
Montana · public-access reaches. This page is what the desk knows about the water itself. What it is doing today — flow, water temperature, weather, and the hazards those produce — is a reading with a date on it, and it lives in Trip Prep.
Plan a trip on Big Spring Creek — LewistownStores this page so it opens with no signal. Live flow and weather are never stored.
Who manages it
Montana Fish, Wildlife & Parks
These links were checked against the live agency site on 2026-09-01. Rules for a water change inside a season, so the agency’s own page on the day you go is the only current answer — this desk does not hold one.
Directory review
Review provenance unavailable
The fleet directory holds no record by this name in Montana, so there is no directory review to show.
The agency links on this page were checked on 2026-09-01; check the agency’s own page the day you go.
How access works here
Short public reaches, mostly walk-in
Spring creeks are small, heavily fished, and frequently bordered by private ground. Public reaches can be short, and some are fee- or reservation-managed even where the water is public.
Launch · Too small to launch. This is a walking water.
Parking · Parking is usually a small designated lot or a signed pullout, and it is genuinely limited. Arrive early or pick another reach.
Montana runs a numbered Fishing Access Site (FAS) network — most named reaches have signed FAS points with parking, and many have a ramp. Montana also has a stream access law: below the ordinary high-water mark of most rivers is public, but you still have to get there from a public point.
Gauge
A public gauge is mapped
Flow and water temperature for this water are read from USGS site 06111500, Big Spring Creek near Lewistown, MT. It is an official public gauge, not a fishing pin: it describes the river at one point, and the reach you stand in may be doing something else.
Species · derived
3 plausible here
Derived from water class (spring creek) and Rockies range — not a stocking record. Confirm species, seasons and any closures with Montana Fish, Wildlife & Parks.
Brown trout
54–67°F published preference · handling becomes a conservation problem at 68°F
Rainbow trout
52–64°F published preference · handling becomes a conservation problem at 68°F
Cutthroat trout
48–62°F published preference · handling becomes a conservation problem at 66°F