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Indiana lake depth maps

Middle Fork Reservoir depth map

Middle Fork Reservoir in Wayne County, Indiana reaches a depth of 30 feet. Middle Fork Reservoir is charted here across 10 closed depth contours, from the 3 ft line down to 30 ft, enclosing about 137 acres of water. Half of that water lies inside the 18 ft line, and only 2.2 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

Middle Fork Reservoir depth chart: 10 depth contours from 3 to 30 ft

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

Middle Fork Reservoir depth chart data: water enclosed by each contour
Depth contourWater inside itShare of mapped water
3 ft137 acres100%
6 ft127 acres93%
9 ft115 acres84%
12 ft97 acres71%
15 ft76 acres56%
18 ft59 acres43%
21 ft46 acres33%
24 ft28 acres21%
27 ft9.9 acres7.2%
30 ft2.2 acres1.6%

Acreages are computed from the closed Indiana DNR Lake Bathymetry contour rings, with islands subtracted. Shares are of the 137 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 Middle Fork Reservoir: steep sides for its size

Inside its outermost 3 ft contour the survey charts about 137 acres of Middle Fork Reservoir, with the 18 ft line enclosing half of it, so depth comes quickly here, with no long shallow margin before the bottom drops away. The sharpest change on the chart is between 12 and 15 ft, where the mapped water loses 21 acres in 3 ft of depth, that band is the contour to work first, because it is where the bottom stops being flat. The deepest 30 ft contour holds 2.2 acres, 1.6% of the mapped water, toward the southwestern corner of the lake. Nothing here reaches a true cold-water layer at 30 ft, so structure does the thermocline's work: the points and inside turns where the 12 and 15 ft lines pinch together fish hardest in early season, and again as fish follow bait back down in autumn.

Middle Fork Reservoir depth map FAQs

How deep is Middle Fork Reservoir?
Middle Fork Reservoir reaches a maximum depth of 30 feet in the Indiana DNR Lake Bathymetry survey. Most of it is far shallower: the survey charts 10 closed depth contours over about 137 acres, and half of that water sits inside the 18 ft line.
Where is the deepest part of Middle Fork Reservoir?
The deepest charted water on Middle Fork Reservoir lies inside the 30 ft contour, toward the southwestern corner of the lake. That contour encloses 2.2 acres, 1.6% 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 Middle Fork Reservoir is shallower than 18 feet?
About half. The 18 ft contour encloses 59 acres of the roughly 137 acres inside the outer 3 ft line, so the other half of the water is shallower than 18 feet. The sharpest drop is between 12 and 15 feet, where the mapped water sheds 21 acres.
How accurate is this Middle Fork Reservoir 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 Middle Fork Reservoir

Mapped fishing venues near Middle Fork Reservoir

Middle Fork Reservoir 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