What Lake Trout Are and Where They Live
Lake trout are deep-water fish that live in cold, clean lakes across northern North America. They are not the same as brook trout or brown trout — lake trout are larger, live deeper, and prefer water cold enough that ice forms in winter. They spend most of their lives in the depths, which is why catching them requires different tactics than fishing for trout in streams.
Lake trout are native to the Great Lakes, deep lakes in Canada, and high-elevation mountain lakes in the western United States. They have also been stocked into many reservoirs and man-made lakes where the water stays cold year-round. In summer, lake trout move to depths of 60 to 200 feet or deeper, following the thermocline — the layer where water temperature drops sharply. In spring and fall, they move shallower, sometimes into water 20 to 40 feet deep, which is when shore-based and boat anglers have the best chance.
Key Takeaways
- Lake trout live in deep, cold water and are most catchable in spring and fall when they move into shallower depths of 20 to 60 feet.
- You will need a boat or access to deep water from shore, and fishing methods depend on the season and depth where trout are holding.
- Regulations vary by state and by individual lake — check your state's fishing guide before you go, as some lakes have special rules or slot limits.
- Lake trout grow slowly and live a long time, so catch-and-release or keeping only what you plan to eat helps preserve the fishery.
Spring and Fall: The Best Seasons for Lake Trout
Spring and fall are when lake trout move into water shallow enough for anglers to reach them without specialized deep-water gear. In spring, as ice melts and water warms from 35 to 45 degrees Fahrenheit, lake trout move into the shallows to feed. This window lasts from ice-out until water temperature reaches the mid-50s — usually two to four weeks depending on the lake and latitude. Fall offers a similar window as water cools from summer heat, typically from late August through October.
During these seasons, you can fish from shore in some places, especially near drop-offs or rocky points where deep water is close to land. Most anglers use a boat to reach the depths where trout hold. Trolling — pulling a lure or live bait behind a moving boat — is the most common method. Jigging, where you drop a weighted lure to the lake bottom and work it up and down, also works well in spring and fall when trout are concentrated in specific depth zones.
Summer Fishing: Deep Water and Specialized Tactics
Summer lake trout fishing requires reaching depths of 80 to 200 feet or more, which demands a boat, a fish finder to locate the thermocline, and heavy jigging gear or downriggers — mechanical devices that lower lures to precise depths. Many anglers stop fishing for lake trout in midsummer because the effort and equipment needed outweigh the reward for casual anglers.
If you do fish summer lake trout, focus on the thermocline itself — the narrow band where water temperature changes rapidly. Lake trout gather just above or below this layer. A fish finder shows the thermocline as a distinct line on the screen. Jigging with heavy spoons or tube jigs works best, as does trolling with downriggers. Early morning and late evening, when water is slightly cooler, can produce better results than midday.
Winter: Ice Fishing for Lake Trout
In northern regions where lakes freeze solid, ice fishing for lake trout is a winter option. You drill a hole through the ice, lower a jigging spoon or small live bait to the depth where trout are holding — often 40 to 100 feet — and work the lure with small, steady movements. Winter lake trout fishing is most productive in early winter, right after ice forms, and again in late winter as water warms slightly beneath the ice.
Ice fishing requires a hand auger or power auger to cut holes, a jigging rod, and patience. Many anglers use tip-ups — devices that hold a line and signal when a fish bites — so they can fish multiple holes at once. Check local regulations before you go, as some lakes have special rules for ice fishing, and always verify that ice is thick enough to support your weight — at least 4 inches for walking, more if you bring a vehicle.
Regulations, Seasons, and Special Rules
Lake trout regulations vary widely by state and by individual lake. Some states have a year-round season; others close certain lakes in summer to protect spawning fish. Many lakes have a slot limit — a rule that says you must release fish within a certain size range and can only keep fish above or below that range. Other lakes have a simple daily limit on the number of fish you can keep, or a minimum size requirement.
Check your state's fishing guide or the specific lake's regulations before you fish. State wildlife agencies publish these guides online and often include maps showing which lakes have special rules. Some popular lake trout fisheries, like parts of the Great Lakes, have detailed regulations that change year to year based on fish population surveys. Ignoring these rules can result in a citation, so take five minutes to look them up.
Gear and Methods: What Works for Lake Trout
For spring and fall fishing in shallow to moderate depths, a medium-power spinning rod or baitcasting rod works well. Pair it with 8- to 12-pound monofilament or braided line. Trolling requires a trolling rod — a shorter, stiffer rod designed to handle the constant pressure of pulling lures — and a level-wind reel or trolling reel that holds 200 yards or more of line.
Lures that work for lake trout include spoons (which mimic small fish and flash in the water), tube jigs (soft plastic tubes filled with lead), and crankbaits (hard-bodied lures that dive to a specific depth). Live bait — lake herring, smelt, or shiners — works well when trolled or jigged. The key is matching the lure size and color to the forage fish in the lake. Ask at a local tackle shop what baitfish lake trout eat in the water you plan to fish, and choose lures that resemble them.
Access and Where to Fish
Lake trout live in many lakes across North America, but not all of them are open to the public or easy to reach. The Great Lakes — Superior, Michigan, Huron, and Ontario — all have lake trout populations and public access at many points. Deep lakes in the Rocky Mountains, the Sierra Nevada, and the Cascade Range often hold lake trout. In Canada, countless lakes in Ontario, British Columbia, and the northern territories have thriving lake trout fisheries.
To find a lake trout fishery near you, start with your state or provincial wildlife agency website. Most publish lists of lakes where lake trout are present, along with access information and regulations. National forests and national parks often have lakes with lake trout and public boat ramps or shore access. Private resorts and outfitters in remote areas can arrange trips to lakes that are harder to reach on your own. If you are new to lake trout fishing, hiring a guide for one trip can teach you the methods and help you locate fish much faster than learning alone.
Frequently Asked Questions
Do I need a boat to fish for lake trout?
A boat makes lake trout fishing much easier, especially in summer, but it is not always required. In spring and fall, you can fish from shore near deep drop-offs or rocky points, particularly on lakes with steep banks. Some reservoirs have deep water close to the dam or near certain points. Ask locals or check online forums about your specific lake to find shore-accessible spots.
What is the difference between lake trout and brook trout?
Lake trout and brook trout are different species. Lake trout live in deep, cold lakes and grow larger — often 2 to 5 pounds, sometimes much more. Brook trout are smaller, live in streams and shallow lakes, and prefer slightly warmer water. Lake trout have a gray or greenish body with light spots; brook trout have a darker body with white-edged fins and red spots.
Can I catch lake trout from shore?
Yes, but only in spring and fall when they move into shallower water. Look for rocky points, drop-offs, or areas where deep water is close to shore. Cast spoons or small crankbaits and work them slowly. Early morning and evening are best. In summer, lake trout move too deep for shore fishing to be productive.
What size lake trout should I keep?
Check your state's regulations, as size limits and slot limits vary by lake. Many lakes require a minimum size of 15 to 18 inches. Some have slot limits that say you must release fish in a certain range — for example, release all fish 16 to 24 inches and keep only those smaller or larger. Keeping smaller fish helps preserve the population, since lake trout grow slowly.
What time of year is best for lake trout?
Spring and fall are best for most anglers because lake trout are in shallower, more accessible water. Spring fishing begins right after ice-out and lasts until water warms to the mid-50s. Fall fishing starts in late August or September as water cools and lasts through October. Summer requires deep-water techniques and specialized gear, making it harder for casual anglers.