Deepest lakes & reservoirs in Montana by maximum depth (ft)
The estimated greatest depth of the water in a lake can be measured at the lake’s normal elevation. If the water volume and surface area of a lake are known, an estimate of the lake’s average depth can be calculated:Water volume ÷ Surface Area = Average Depth
Example: 1,000,000 acre-feet ÷ 20,000 acres = 50 feet average depth.
You can find many of the the world’s deepest lakes on LakeLubbers. If you sort the list, you will find the (maximum depth of) the shallowest lakes in our database. Note: For some lakes, lake depth data is unknown, so this table may display fewer lakes than the total 30 articles we have published for Montana lakes.
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Below are lakes within USA > US West Region > Montana > Compared by maximum depth in feet. This list does not represent all lakes in Montana, only the 30 Montana lake articles we have published on the LakeLubbers website.
Lake name | Max depth in feet | Lake description |
---|---|---|
Mystic Lake (Montana, US West Region, USA, Yellowstone Country, MT) |
205 ft | One of the prettiest lakes in Montana’s Yellowstone Country is Mystic Lake. This beautiful lake sits at 7,637 feet above sea level in the Absaroka-Bea … |
Quake Lake (Gold West Country, MT, Montana, US West Region, USA, Yellowstone Country, MT) |
190 ft | Also known as Earthquake Lake In a natural phenomenon seldom seen in today’s world, a massive earthquake and landslide created Montana’s Quake Lake in 1959. In pre-recorded history … |
Thompson Chain of Lakes (Glacier Country, MT, Montana, US West Region, USA) |
160 ft | Also known as Loon Lake ,Horseshoe Lake, Chrystal Lake, Upper Thompson Lake, Middle Thompson Lake, Lower Thompson Lake, McGregor Lake, Lavon Lake, Little Loon Lake, Banana Lake, Bootjack Lake, Cad Lake, Cibid Lake, Lilly Pad Lake, Myron Lake, Rainbow Lake,Topless Lake Most visitors driving along US 2 in Montana’s Glacier Country region have likely admired the Thompson Chain of Lakes as they passed. Located about 45 … |
Canyon Ferry Lake, MT (Gold West Country, MT, Montana, US West Region, USA) |
160 ft | For lake lovers who relish the beauty of nature and the wonder of wildlife, there’s no better place to relax and have fun than at Canyon Ferry Lake. A … |
Crystal Lake MT (Glacier Country, MT, Montana, US West Region, USA) |
154 ft | Spring-fed Crystal Lake is tucked away in a remote area of Montana’s Glacier County with mountains springing up on both sides. The 186-acre body of wa … |
Swan Lake MT (Glacier Country, MT, Montana, US West Region, USA) |
133 ft | Montana conjures images of snow-capped mountains and clean waters full of fish, and Swan Lake more than lives up to that reputation. Surrounded by the … |
Seeley Lake, MT (Glacier Country, MT, Montana, US West Region, USA) |
125 ft | Tucked in the Clearwater Valley of western Montana lies a 1,025-acre body of water called Seeley Lake. This glacial lake is considered to be part of a … |
Echo Lake MT (Glacier Country, MT, Montana, US West Region, USA) |
71 ft | Tiny islands, curving coves and wide bays are part of the allure of northern Montana’s Echo Lake. Coupled with mountains, wildlife, and the smell of t … |
Hebgen Lake (Gold West Country, MT, Montana, US West Region, USA, Yellowstone Country, MT) |
70 ft | Anglers will find some of Montana’s best stillwater trout fishing at Hebgen Lake. The 12,500-acre reservoir lies conveniently just outside the western … |
Swiftcurrent Lake (Glacier Country, MT, Montana, US West Region, USA) |
30 ft | When many visitors to Glacier National Park think of lakes in the area, it is often Swiftcurrent Lake that comes to mind. Often photographed, this bea … |
Spoon Lake (Glacier Country, MT, Montana, US West Region, USA) |
28 ft | Set along the western edge of Montana’s Glacier National Park, amid towering mountain peaks and lush, echoing valleys, Spoon Lake rests in an outdoor … |
Ennis Lake (Gold West Country, MT, Montana, US West Region, USA) |
20 ft | In 1905 the Montana Power Company built a dam on the Madison River, creating Ennis Lake. The two and a half mile long lake stretches across Montana’s … |