How deep is Blue Lake?

Blue Lake reaches a maximum depth of 45 feet, according to the Indiana DNR Lake Bathymetry survey. Most of the lake is shallower, with 9 mapped depth bands between the shoreline and the deepest hole.

Where is the deepest part of Blue Lake?

The deepest surveyed water on Blue Lake sits toward the northwestern corner of the lake, inside the 45 ft contour. The interactive depth map above shows the full basin outline and the breaks leading into it.

How accurate is this Blue Lake depth map?

The contours come from the Indiana DNR Lake Bathymetry 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. Per Indiana DNR, the data are graphical representations for reference only, not a survey instrument.

Indiana lake depth maps

Blue Lake depth map

Blue Lake in WHITLEY County, Indiana reaches a depth of 45 feet. The official Indiana survey maps 9 depth bands across 15 contour lines. This free map of Blue Lake shows every surveyed contour as an interactive depth chart you can use to plan a session before you travel.

Blue Lake depth chart: 9 depth bands to 45 ft

Data: Indiana DNR Lake Bathymetry (credit: Indiana DNR), retrieved August 2026 · depths change over time · not for navigation

Blue Lake depth chart data
Depth contour	Share of mapped area inside it
5 ft	about 100%
10 ft	about 91%
15 ft	about 80%
20 ft	about 66%
25 ft	about 51%
30 ft	about 31%
35 ft	about 15%
40 ft	about 6%
45 ft	about 2%

Share of the surveyed surface area enclosed by each depth contour, computed from the Indiana DNR Lake Bathymetry data.

How to fish Blue Lake: mid-depth structure water

With 45 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 9 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 Blue Lake

Blue 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.

Blue Lake depth map FAQs

How deep is Blue Lake?: Blue Lake reaches a maximum depth of 45 feet, according to the Indiana DNR Lake Bathymetry survey. Most of the lake is shallower, with 9 mapped depth bands between the shoreline and the deepest hole.
Where is the deepest part of Blue Lake?: The deepest surveyed water on Blue Lake sits toward the northwestern corner of the lake, inside the 45 ft contour. The interactive depth map above shows the full basin outline and the breaks leading into it.
How accurate is this Blue Lake depth map?: The contours come from the Indiana DNR Lake Bathymetry 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. Per Indiana DNR, the data are graphical representations for reference only, not a survey instrument.

Depth maps for lakes near Blue Lake

Round Lake depth map · 60 ft max · 4 mi away
Shriner Lake depth map · 73 ft max · 5 mi away
Rivir Lake depth map · 35 ft max · 7 mi away
Williams Lake depth map · 40 ft max · 8 mi away
Bear Lake depth map · 55 ft max · 10 mi away

Mapped fishing venues near Blue Lake

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

Round Lake · 4 mi away
Shriner Lake · 5 mi away
Rivir Lake · 7 mi away

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