How deep is Piatt Lake?

Piatt 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 Piatt Lake?

The deepest charted water on Piatt Lake lies inside the 60 ft contour, toward the northwestern corner 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 Piatt Lake is shallower than 20 feet?

About half. The 20 ft contour encloses 66 acres of the roughly 150 acres inside the outer 10 ft line, so the other half of the water is shallower than 20 feet. The sharpest drop is between 10 and 15 feet, where the mapped water sheds 50 acres.

How accurate is this Piatt 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

Piatt Lake depth map

Piatt Lake in Chippewa County, Michigan reaches a depth of more than 60 feet at its deepest surveyed contour. Piatt Lake is charted here across 11 closed depth contours, from the 10 ft line down to 60 ft, enclosing about 150 acres of water. Half of that water lies inside the 20 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

Piatt Lake depth chart: 11 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

Piatt Lake depth chart data: water enclosed by each contour
Depth contour	Water inside it	Share of mapped water
10 ft	150 acres	100%
15 ft	100 acres	67%
20 ft	66 acres	44%
25 ft	38 acres	25%
30 ft	28 acres	19%
35 ft	20 acres	14%
40 ft	13 acres	8.7%
45 ft	8.3 acres	5.5%
50 ft	5.4 acres	3.6%
55 ft	2.9 acres	1.9%
60 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 150 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 Piatt Lake: a wide shallow flat over a deep hole

The survey encloses about 150 acres of Piatt Lake inside its 10 ft contour, and half of that water lies inside the 20 ft line, so the bulk of this Chippewa County water sits on a shallow flat, with the real depth packed into one part of the basin. Between 10 and 15 ft the mapped water sheds 50 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. Inside the 60 ft contour there is under an acre of water, toward the northwestern corner of the lake: a single pocket rather than a basin, and worth a drift over in high summer. 60 ft of water makes this a two-story fishery: warm-water fish hold the 10-to-20 ft ground while the basin can stay cold below the summer thermocline, and the traffic between the two runs along the 10–15 ft break at first and last light.

Ice fishing on Piatt Lake

Piatt Lake 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 60 ft hole. The 10–15 ft band on the chart above is that edge: 50 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-20 ft flat. Check ice thickness locally before you walk out.

Piatt Lake depth map FAQs

How deep is Piatt Lake?: Piatt 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 Piatt Lake?: The deepest charted water on Piatt Lake lies inside the 60 ft contour, toward the northwestern corner 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 Piatt Lake is shallower than 20 feet?: About half. The 20 ft contour encloses 66 acres of the roughly 150 acres inside the outer 10 ft line, so the other half of the water is shallower than 20 feet. The sharpest drop is between 10 and 15 feet, where the mapped water sheds 50 acres.
How accurate is this Piatt 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 Piatt Lake

Monocle Lake depth map · 55+ ft max · 18 mi away
East Twin Lake depth map · 61 ft max · 26 mi away
Long Lake depth map · 71 ft max · 33 mi away
Camp Eight Lake depth map · 74+ ft max · 34 mi away
Syphon Lake depth map · 160 ft max · 35 mi away

Mapped fishing venues near Piatt Lake

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

Monocle Lake · 18 mi away

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