How deep is Round Lake?

Round Lake is more than 55 feet deep. The deepest contour in the Michigan DNR Inland Lake Contours survey is the 55 foot line, and the lake continues deeper inside it, with 11 depth bands mapped in total.

Where is the deepest part of Round Lake?

The deepest surveyed water on Round Lake sits toward the southwestern corner of the lake, inside the 55 ft contour. The interactive depth map above shows the full basin outline and the breaks leading into it.

How accurate is this Round Lake depth map?

The contours come from the Michigan DNR Inland Lake Contours survey. 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.

Michigan lake depth maps

Round Lake depth map

Round Lake in Delta County, Michigan reaches a depth of more than 55 feet at its deepest surveyed contour. The official Michigan survey maps 11 depth bands across 41 contour lines. This free map of Round Lake shows every surveyed contour as an interactive depth chart you can use to plan a session before you travel.

Round Lake depth chart: 11 depth bands to 55+ ft

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

Round Lake depth chart data
Depth contour	Share of mapped area inside it
5 ft	about 100%
10 ft	about 43%
15 ft	about 40%
20 ft	about 28%
25 ft	about 19%
30 ft	about 13%
35 ft	about 8%
40 ft	about 4%
45 ft	about 2%
55 ft	under 1%

Share of the surveyed surface area enclosed by each depth contour, computed from the Michigan DNR Inland Lake Contours data.

How to fish Round Lake: mid-depth structure water

With 55 feet at its deepest, the fish-holding structure is the mid-depth contour: drop-offs, points and inside turns between the shallows and the basin. Use the 11 mapped depth bands to find where contour lines pinch together, which marks the sharpest breaks, and work those edges first, especially early season and again in the fall as fish follow bait between depths.

Ice fishing on Round Lake

Round Lake is a classic ice-fishing depth: enough water to hold fish all winter without the long freeze-up of a deep basin. Start on the deepest mapped hole at first light, then work the breaks where contour lines tighten. Mid-depth flats near the basin edge produce through midday. Always verify ice thickness locally before walking out.

Round Lake depth map FAQs

How deep is Round Lake?: Round Lake is more than 55 feet deep. The deepest contour in the Michigan DNR Inland Lake Contours survey is the 55 foot line, and the lake continues deeper inside it, with 11 depth bands mapped in total.
Where is the deepest part of Round Lake?: The deepest surveyed water on Round Lake sits toward the southwestern corner of the lake, inside the 55 ft contour. The interactive depth map above shows the full basin outline and the breaks leading into it.
How accurate is this Round Lake depth map?: The contours come from the Michigan DNR Inland Lake Contours survey. 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.

Depth maps for lakes near Round Lake

McKeever Lake depth map · 65 ft max · 8 mi away
Steuben Lake depth map · 55+ ft max · 16 mi away
Clear Lake depth map · 50+ ft max · 17 mi away
Island Lake depth map · 60+ ft max · 22 mi away
Dodge Lake depth map · 55+ ft max · 23 mi away

Mapped fishing venues near Round Lake

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

McKeever Lake · 8 mi away
Steuben Lake · 16 mi away
Clear Lake · 17 mi away

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