How deep is Lake Fenton?

Lake Fenton is more than 90 feet deep. The deepest contour in the Michigan DNR Inland Lake Contours survey is the 90 foot line, and the lake continues deeper inside it.

Where is the deepest part of Lake Fenton?

The deepest charted water on Lake Fenton lies inside the 90 ft contour, toward the northern end of the lake. That contour encloses under an acre, under 1% 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 Lake Fenton is shallower than 40 feet?

About half. The 40 ft contour encloses 161 acres of the roughly 492 acres inside the outer 10 ft line, so the other half of the water is shallower than 40 feet. The sharpest drop is between 20 and 30 feet, where the mapped water sheds 136 acres.

How accurate is this Lake Fenton 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

Lake Fenton depth map

Lake Fenton in Genesee County, Michigan reaches a depth of more than 90 feet at its deepest surveyed contour. Lake Fenton is charted here across 9 closed depth contours, from the 10 ft line down to 90 ft, enclosing about 492 acres of water. Half of that water lies inside the 40 ft line, and only under an acre 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

Lake Fenton depth chart: 9 depth contours from 10 to 90 ft

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

Lake Fenton depth chart data: water enclosed by each contour
Depth contour	Water inside it	Share of mapped water
10 ft	492 acres	100%
20 ft	401 acres	82%
30 ft	265 acres	54%
40 ft	161 acres	33%
50 ft	85 acres	17%
60 ft	39 acres	7.9%
70 ft	15 acres	3.1%
80 ft	4.1 acres	under 1%
90 ft	under 1 acre	under 1%

Acreages are computed from the closed Michigan DNR Inland Lake Contours contour rings, with islands subtracted. Shares are of the 492 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 Lake Fenton: a stepped drop into deep water

Inside its outermost 10 ft contour the survey charts about 492 acres of Lake Fenton, with the 40 ft line enclosing half of it, so the drop to the deep basin comes in stages, each contour giving up another slice of water, rather than in one abrupt wall. The sharpest change on the chart is between 20 and 30 ft, where the mapped water loses 136 acres in 10 ft of depth, that band is the contour to work first, because it is where the bottom stops being flat. Inside the 90 ft contour there is under an acre of water, toward the northern end of the lake: a single pocket rather than a basin, and worth a drift over in high summer. 90 ft of water makes this a two-story fishery: warm-water fish hold the 10-to-40 ft ground while the basin can stay cold below the summer thermocline, and the traffic between the two runs along the 20–30 ft break at first and last light.

Ice fishing on Lake Fenton

Lake Fenton freezes later and less evenly than the shallow waters around it, and the winter bite sets up on the first real break rather than out over the 90 ft hole. The 20–30 ft band on the chart above is that edge: 136 acres of bottom tilt away there, and panfish and walleye slide up and down it through the day. Late ice pushes fish back onto the 10-to-40 ft flat. Check ice thickness locally before you walk out.

Lake Fenton depth map FAQs

How deep is Lake Fenton?: Lake Fenton is more than 90 feet deep. The deepest contour in the Michigan DNR Inland Lake Contours survey is the 90 foot line, and the lake continues deeper inside it.
Where is the deepest part of Lake Fenton?: The deepest charted water on Lake Fenton lies inside the 90 ft contour, toward the northern end of the lake. That contour encloses under an acre, under 1% 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 Lake Fenton is shallower than 40 feet?: About half. The 40 ft contour encloses 161 acres of the roughly 492 acres inside the outer 10 ft line, so the other half of the water is shallower than 40 feet. The sharpest drop is between 20 and 30 feet, where the mapped water sheds 136 acres.
How accurate is this Lake Fenton 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 Lake Fenton

Dickinson Lake depth map · 68 ft max · 3 mi away
Hoisington Lake depth map · 62 ft max · 6 mi away
Lobdell Lake depth map · 70+ ft max · 7 mi away
Bennett Lake depth map · 58+ ft max · 7 mi away
White Lake depth map · 32 ft max · 14 mi away

Mapped fishing venues near Lake Fenton

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

Dickinson Lake · 3 mi away
Hoisington Lake · 6 mi away
Lobdell Lake · 7 mi away

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