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Indiana lake depth maps

Rockville Lake depth map

Rockville Lake in Parke County, Indiana reaches a depth of 18 feet. Rockville Lake is charted here across 6 closed depth contours, from the 3 ft line down to 18 ft, enclosing about 67 acres of water. Half of that water lies inside the 12 ft line, and only 7.7 acres lie inside the deepest one. Every contour is on the interactive map below, free and without an account.

Data: Indiana DNR Lake Bathymetry (credit: Indiana DNR). Contours closed, checked and area-computed by Jordan Carter, founder of GilledIt · page updated

Rockville Lake depth chart: 6 depth contours from 3 to 18 ft

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

Rockville Lake depth chart data: water enclosed by each contour
Depth contourWater inside itShare of mapped water
3 ft67 acres100%
6 ft50 acres75%
9 ft39 acres58%
12 ft28 acres43%
15 ft18 acres27%
18 ft7.7 acres12%

Acreages are computed from the closed Indiana DNR Lake Bathymetry contour rings, with islands subtracted. Shares are of the 67 acres inside the outermost charted contour (the 3 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 Rockville Lake: steep sides for its size

Inside its outermost 3 ft contour the survey charts about 67 acres of Rockville Lake, with the 12 ft line enclosing half of it, so the bottom holds its depth well out from the bank rather than tapering off a long shallow margin. The sharpest change on the chart is between 3 and 6 ft, where the mapped water loses 17 acres in 3 ft of depth, that band is the contour to work first, because it is where the bottom stops being flat. 7.7 acres, 12% of the mapped water, lie inside the deepest 18 ft contour, toward the southern end of the lake. Topping out at 18 ft, weed growth structures this water more than depth does, but the 7.7-acre deep spot still concentrates fish in the heat of summer, and the one-contour depressions on the chart are the ones most anglers row straight over.

Rockville Lake depth map FAQs

How deep is Rockville Lake?
Rockville Lake reaches a maximum depth of 18 feet in the Indiana DNR Lake Bathymetry survey. Most of it is far shallower: the survey charts 6 closed depth contours over about 67 acres, and half of that water sits inside the 12 ft line.
Where is the deepest part of Rockville Lake?
The deepest charted water on Rockville Lake lies inside the 18 ft contour, toward the southern end of the lake. That contour encloses 7.7 acres, 12% 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 Rockville Lake is shallower than 12 feet?
About half. The 12 ft contour encloses 28 acres of the roughly 67 acres inside the outer 3 ft line, so the other half of the water is shallower than 12 feet. The sharpest drop is between 3 and 6 feet, where the mapped water sheds 17 acres.
How accurate is this Rockville Lake depth map?
The contours come from the Indiana DNR Lake Bathymetry 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. Per Indiana DNR, the data are graphical representations for reference only, not a survey instrument. 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 Rockville Lake

Mapped fishing venues near Rockville Lake

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

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