Square Lake is a lake in Aroostook County, Maine and covers about 8,090 acres, with a deepest recorded spot of 122 feet.
What Makes Square Lake Different
Square Lake is a deep Fish River chain lake with broad open water, cold spots and connected movement routes for salmon and trout.
The lake covers 8,089 acres and reaches 122 feet. Salmon, brook trout and togue share the deep water with cusk, perch and white perch.
Fish and Baits at Square Lake
Fish reported from Square Lake include landlocked Atlantic salmon, brook trout, brown bullhead, cusk, lake trout, pumpkinseed, white perch, and yellow perch.
Perch and Sunfish
For panfish at Square, use a worm or tiny jig near weeds and shade for pumpkinseed, and fish a small jig, minnow or worm close to the bottom for yellow perch.
Bullheads
For brown bullheads at Square, put a nightcrawler or small piece of cut bait on the bottom in quiet water, especially after sunset.
Trout
For trout at Square, try a small spoon, inline spinner, streamer or worm near cool incoming water for brook trout.
Salmon, Lake Trout and Other Deep-Water Fish
For deep-water fish at Square, troll a smelt-colored streamer, thin spoon or small minnow plug for landlocked salmon and jig or troll a spoon or minnow-shaped lure in cold, deep water for lake trout. Also at Square, fish a jig or natural bait on the bottom in cold water or after dark for cusk and use a small jig, minnow or worm when white perch gather over deep flats and drop-offs.
Where to Start at Square Lake
Use smelt-pattern spoons for salmon and togue, work spring and fall shoreline spots for brook trout, and jig shelves for yellow or white perch.
On a first trip to Square, check one quiet cove, one rocky or firm point and the nearby deep water with a moving lure, then use a jig or worm where you find fish.
Square Lake is part of the Fish River chain, so connected water can move baitfish and change where salmon and trout gather. Points near those connections are sensible places to check.
Yellow perch and white perch do not always sit with salmon and lake trout. Keep a light jig ready for flatter, shallower water instead of spending the whole day over the deep end.
Fishing Square Lake Through the Year
Spring at Square is a good time to check warm coves and incoming water, and summer fishing is usually better in cooler, deeper water. Fall at Square can bring fish back to windy points and banks, while winter calls for smaller baits fished slowly.
Tackle for Square Lake
A medium spinning rod covers most casting at Square, while a second rod with enough line and weight to reach deep water is useful for salmon and togue.
Square Lake FAQs
Why does its place in the Fish River chain matter when fishing Square Lake?
Connected water can affect baitfish movement and where fish sit through the year.
What lure is a sensible starting choice on Square Lake?
A slim spoon fished at the baitfish depth is a good start for landlocked salmon.
What does the 122-foot-deep end mean when fishing Square Lake?
It gives fish that like cold water room to move deeper in summer while perch can remain on shallower shelves.
Nearby fishing waters
Explore nearby waters, including local Featured destinations. Check each page for access and fishing restrictions.
Distances are straight-line estimates between mapped water locations.