St. Croix River Fishing Guides
The Maine and New Brunswick border river below Spednic Lake, one of the best smallmouth bass floats in the Northeast.

Guides on the St. Croix River
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About the St. Croix River
The St. Croix River forms the international border between eastern Maine and New Brunswick, and the gauge at Vanceboro sits at the outlet of Spednic Lake where the river proper begins. Below that outlet the river runs south through a corridor of undeveloped forest toward Grand Falls Flowage and eventually Calais and Passamaquoddy Bay. Very little of the land along it is developed, and the float from Vanceboro down is one of the best-known multi-day canoe trips in the Northeast.
The smallmouth bass fishing is what carries the river’s reputation. The population is dense, the fish are willing, and the water is shallow and broken enough that they can be caught on the surface through much of the summer. It is a river where a beginner can have a genuinely good day and an experienced angler can fish hard and still be surprised. Landlocked salmon are present, chain pickerel are common in the slower flowages, and brook trout hold in the colder feeder streams.
Flow on the St. Croix is managed at the Vanceboro dam, so the gauge reading is a release figure as much as a runoff figure. Paddlers and anglers watch it closely because the character of the river between Vanceboro and Little Falls changes substantially with a few hundred cubic feet per second either way. A low release exposes ledges and slows the trip; a high one makes the rips pushy and the fishing harder to read.
Access is concentrated at a few points because of the border and the forest ownership through the corridor. Vanceboro at the top and the landings around Grand Falls Flowage at the bottom are the practical ends of most trips, with Loon Bay and the campsites along the way serving as intermediate stops for those floating the full run.
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Access
Vanceboro - the gauge reach and the standard put-in at the Spednic Lake outlet.
Spednic Lake - the large flowage above the dam, with launch access.
Little Falls - a rip below Vanceboro reached from the river.
Loon Bay - an intermediate access point on the middle river.
Grand Falls Flowage - the downstream flowage with several public landings.
Kellyland - lower-river access near the Grand Falls dam.
Calais - the tidal end of the system, below the freshwater river.
Seasons
Spring: high, cold water with the smallmouth fishing arriving late in the month of May.
Summer: the peak season, with surface fishing for smallmouth through the rips and flats.
Fall: cooling water, fewer paddlers, and smallmouth feeding hard before the close.
Winter: the river is locked up and fishing moves to the ice on the flowages.
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Questions
What is the current flow on the St. Croix River?
As of Sep 17, 6:30 am, the USGS gauge St. Croix River at Vanceboro, Maine reads 498 cfs. Conditions update every 15 minutes.
What species can you catch on the St. Croix River?
Anglers target Brook Trout, Chain Pickerel, Landlocked Atlantic Salmon, Muskellunge, Smallmouth Bass on the St. Croix River in Maine.
Where can you access the St. Croix River?
Vanceboro - the gauge reach and the standard put-in at the Spednic Lake outlet. Spednic Lake - the large flowage above the dam, with launch access. Little Falls - a rip below Vanceboro reached from the river. Loon Bay - an intermediate access point on the middle river. Grand Falls Flowage - the downstream flowage with several public landings. Kellyland - lower-river access near the Grand Falls dam. Calais - the tidal end of the system, below the freshwater river.
When is the best time to fish the St. Croix River?
Spring: high, cold water with the smallmouth fishing arriving late in the month of May. Summer: the peak season, with surface fishing for smallmouth through the rips and flats. Fall: cooling water, fewer paddlers, and smallmouth feeding hard before the close. Winter: the river is locked up and fishing moves to the ice on the flowages.
Where are the fishing regulations for the St. Croix River?
Regulations change by season and section. Read the current rules on the Maine agency site: https://www.maine.gov/ifw/fishing-boating/fishing/laws-rules.html