How deep is Big Fish Lake?

Big Fish Lake is more than 60 feet deep. The deepest contour in the Michigan DNR Inland Lake Contours survey is the 60 foot line, and the lake continues deeper inside it.

Where is the deepest part of Big Fish Lake?

The deepest charted water on Big Fish Lake lies inside the 60 ft contour, toward the western side of the lake. That contour encloses 2.1 acres, 3.7% of the mapped water, so it is a small target on a small water, the depth chart above gives the contour to line up on.

How much of Big Fish Lake is shallower than 30 feet?

About half. The 30 ft contour encloses 19 acres of the roughly 57 acres inside the outer 10 ft line, so the other half of the water is shallower than 30 feet. The sharpest drop is between 10 and 15 feet, where the mapped water sheds 16 acres.

How accurate is this Big Fish Lake depth map?

The contours come from the Michigan DNR Inland Lake Contours survey, retrieved August 2026 and last rebuilt on August 19, 2026. Depths change over time with water levels and sediment, so treat this map as a planning guide for fishing, and never use it for navigation. Acreages are computed from the published contour geometry, not from a separate area survey, so read them as close approximations.

Michigan lake depth maps

Big Fish Lake depth map

Big Fish Lake in Lapeer County, Michigan reaches a depth of more than 60 feet at its deepest surveyed contour. Big Fish Lake is charted here across 7 closed depth contours, from the 10 ft line down to 60 ft, enclosing about 57 acres of water. Half of that water lies inside the 30 ft line, and only 2.1 acres lie inside the deepest one. Every contour is on the interactive map below, free and without an account.

Data: Michigan DNR Inland Lake Contours (public record). Contours closed, checked and area-computed by Jordan Carter, founder of GilledIt · page updated August 19, 2026

Big Fish Lake depth chart: 7 depth contours from 10 to 60 ft

Data: Michigan DNR Inland Lake Contours (public record), retrieved August 2026 · depths change over time · not for navigation

Big Fish Lake depth chart data: water enclosed by each contour
Depth contour	Water inside it	Share of mapped water
10 ft	57 acres	100%
15 ft	41 acres	73%
20 ft	28 acres	50%
30 ft	19 acres	34%
40 ft	13 acres	23%
50 ft	6.3 acres	11%
60 ft	2.1 acres	3.7%

Acreages are computed from the closed Michigan DNR Inland Lake Contours contour rings, with islands subtracted. Shares are of the 57 acres inside the outermost charted contour (the 10 ft line), which is the outer edge of the mapped water, several state files carry no 0 ft shoreline line, so this is not the same as a share of the lake's published surface area.

Fishing Big Fish Lake: a stepped drop into deep water

The survey encloses about 57 acres of Big Fish Lake inside its 10 ft contour, and half of that water lies inside the 30 ft line, so the bottom steps down contour by contour into the deep basin rather than shelving flat or plunging all at once. Between 10 and 15 ft the mapped water sheds 16 acres in 5 ft of depth, the sharpest change on the chart, start on that band, because it is where the bottom stops being flat. 2.1 acres, 3.7% of the mapped water, lie inside the deepest 60 ft contour, toward the western side of the lake. At 60 ft this is two-story water: the basin can stay cold below the summer thermocline while warm-water fish stay up on the 10-to-30 ft ground, and the fish that move between the two do it along the 10–15 ft break at first and last light.

Ice fishing on Big Fish Lake

Deep water like Big Fish Lake freezes later and less evenly than the shallow lakes around it, and the winter bite sets up on the first real break, not out over the 60 ft hole. That edge is the 10–15 ft band on the chart above, where 16 acres of bottom tilt away, and panfish and walleye work up and down it through the day. By late ice the fish push back onto the 10-to-30 ft flat. Check ice thickness locally before you walk out.

Big Fish Lake depth map FAQs

How deep is Big Fish Lake?: Big Fish Lake is more than 60 feet deep. The deepest contour in the Michigan DNR Inland Lake Contours survey is the 60 foot line, and the lake continues deeper inside it.
Where is the deepest part of Big Fish Lake?: The deepest charted water on Big Fish Lake lies inside the 60 ft contour, toward the western side of the lake. That contour encloses 2.1 acres, 3.7% of the mapped water, so it is a small target on a small water, the depth chart above gives the contour to line up on.
How much of Big Fish Lake is shallower than 30 feet?: About half. The 30 ft contour encloses 19 acres of the roughly 57 acres inside the outer 10 ft line, so the other half of the water is shallower than 30 feet. The sharpest drop is between 10 and 15 feet, where the mapped water sheds 16 acres.
How accurate is this Big Fish Lake depth map?: The contours come from the Michigan DNR Inland Lake Contours survey, retrieved August 2026 and last rebuilt on August 19, 2026. Depths change over time with water levels and sediment, so treat this map as a planning guide for fishing, and never use it for navigation. Acreages are computed from the published contour geometry, not from a separate area survey, so read them as close approximations.

Depth maps for lakes near Big Fish Lake

Lake Orion depth map · 80 ft max · 10 mi away
Deer Lake depth map · 63+ ft max · 11 mi away
Lakeville Lake depth map · 66 ft max · 13 mi away
Maceday Lake depth map · 117 ft max · 13 mi away
Loon Lake depth map · 73 ft max · 14 mi away

Mapped fishing venues near Big Fish Lake

Big Fish Lake in the venue directory covers access and fishing details for this water.

Lake Orion · 10 mi away
Deer Lake · 11 mi away
Lakeville Lake · 13 mi away

Fishing in Michigan needs a state license: Michigan fishing license guide · all Michigan venues