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2,160-acre Clermont County reservoir, Ohio's second-deepest lake; bass, crappie and stocked walleye. The lake tops out around 105 ft. The depth chart is built from real state fisheries GPS surveys, so the humps, channels and drop-offs you see are measured, not guessed. Every species below gets its seasonal read from the same numbers driving the chart.
The outline encloses 1,990 acres, worked by 34.1 miles of shoreline. With a shoreline index of 5.5, this water is all arms and coves — edge habitat well beyond its acreage. 27% of the surface is littoral (under ~15 ft) — cover, weeds and forage water. Tip to tip the water measures near 4.8 mi with a 3.4-mi widest point. Clermont County claims this one. Grant Lake sits 10 mi east — the closest neighbouring chart.
Come spring, look for largemouth bass tight to the bank in 2 to 10 ft. Expect a summer slide to 8 to 20 ft, then a winter hold in 15 to 35 ft. Start at Standing timber (upper end). It's a standing timber / brush holding about 4 ft of water and rates prime come spring. Prime time lands in early morning and the evening. A texas-rigged 10" worm or a deep-diving crankbait is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 10 ft | dawn & dusk | Standing timber (upper end) (4 ft) | Spinnerbait, Chatterbait |
| Summer | 8 to 20 ft | dawn & dusk | Shallow feeding flat (8 ft) | Texas-rigged 10" worm, Deep-diving crankbait |
| Fall | 4 to 15 ft | midday & dawn | Main-lake point (south shore) (3 ft) | Squarebill crankbait (shad), Spinnerbait |
| Winter | 15 to 35 ft | midday | Roadbed hump (33 ft) | Blade bait, Jigging spoon |
When the water first warms, smallmouth bass slide up into 3 to 12 ft. By summer they slide out to 10 to 30 ft, and by winter most fish are in 20 to 45 ft. If you only fish one area, make it Roadbed hump: an offshore hump around 33 ft that scores prime in summer. In summer the feeding windows fall in early morning and the evening. Keep a drop shot (goby/minnow) or a ned rig rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dawn & dusk | Main-lake point (south shore) (3 ft) | Ned rig, Tube jig |
| Summer | 10 to 30 ft | dawn & dusk | Roadbed hump (33 ft) | Drop shot (goby/minnow), Ned rig |
| Fall | 8 to 25 ft | midday & dawn | Main-lake point (south shore) (3 ft) | Jerkbait, Blade bait |
| Winter | 20 to 45 ft | midday | Roadbed hump (33 ft) | Blade bait, Hair jig |
When the water first warms, crappie slide up into 2 to 8 ft. By summer they slide out to 10 to 25 ft, and by winter most fish are in 15 to 35 ft. If you only fish one area, make it Standing timber (upper end): a standing timber / brush around 4 ft that scores prime in spring. In summer the feeding windows fall in early morning and the evening. Keep a jig trolled/spider-rigged or a small crankbait (trolled) rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | Standing timber (upper end) (4 ft) | 1/16 oz jig + tube, Curly-tail grub |
| Summer | 10 to 25 ft | dawn & dusk | Shallow feeding flat (24 ft) | Jig trolled/spider-rigged, Small crankbait (trolled) |
| Fall | 8 to 20 ft | dawn | East Fork creek channel (6 ft) | Jig + minnow combo, Small swimbait (1.5-2") |
| Winter | 15 to 35 ft | midday | Roadbed hump (33 ft) | Tungsten jig + soft plastic, Tiny jigging spoon |
Come spring, look for channel catfish tight to the bank in 3 to 12 ft. Expect a summer slide to 8 to 25 ft, then a winter hold in 20 to 40 ft. Start at Creek inflow (upper end). It's an inflow / creek mouth holding about 4 ft of water and rates prime come spring. Prime time lands in after dark and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dusk | Creek inflow (upper end) (4 ft) | |
| Summer | 8 to 25 ft | night & dusk | East Fork creek channel (6 ft) | |
| Fall | 10 to 30 ft | dusk | East Fork creek channel (6 ft) | |
| Winter | 20 to 40 ft | midday | Deep basin at dam (93 ft) |
Come spring, look for bluegill tight to the bank in 1 to 6 ft. They move out to 4 to 15 ft in summer and finish the year down in 10 to 25 ft. If you only fish one area, make it Dock / pier line: a dock line around 2 ft that scores prime in spring. Best bite is early morning and the evening. A small sponge spider (fly) or a micro tube jig is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 6 ft | midday & dusk | Dock / pier line (2 ft) | 1/32 oz jig + micro plastic, Tiny popper (evenings) |
| Summer | 4 to 15 ft | dawn & dusk | Shallow feeding flat (8 ft) | Small sponge spider (fly), Micro tube jig |
| Fall | 6 to 18 ft | midday | Shallow feeding flat (8 ft) | Micro jig + waxworm, Small spoon tipped |
| Winter | 10 to 25 ft | midday | Shallow feeding flat (24 ft) | Tungsten ice jig + plastic, Tiny spoon |
When the water first warms, white bass & hybrids slide up into 3 to 15 ft. By summer they slide out to 10 to 30 ft, and by winter most fish are in 20 to 40 ft. If you only fish one area, make it Creek inflow (upper end): an inflow / creek mouth around 4 ft that scores prime in spring. In summer the feeding windows fall in early morning and the evening. Keep a jigging spoon or a topwater (when schooling) rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 15 ft | midday & dawn | Creek inflow (upper end) (4 ft) | Rooster tail / inline spinner, Curly-tail jig (white/chartreuse) |
| Summer | 10 to 30 ft | dawn & dusk | Roadbed hump (33 ft) | Jigging spoon, Topwater (when schooling) |
| Fall | 8 to 25 ft | midday & dawn | Main-lake point (south shore) (3 ft) | Small blade bait, Jigging spoon |
| Winter | 20 to 40 ft | midday | Roadbed hump (33 ft) | Jigging spoon, Blade bait (vertical) |
East Fork Lake (Harsha Lake) also holds saugeye (8 to 22 ft in summer). Pick any of them on the map above for rated spots and bait picks.
Count 13 structure marks on this chart. The deepest, Deep basin at dam, sits near 93 ft.
Access data: Ohio DNR — Boater & Stream Access. Confirm conditions and fees locally before you launch.
Season dates, license requirements, and size and bag limits for Ohio waters are set by the Ohio DNR Division of Wildlife — and special regulations can apply to East Fork Lake (Harsha Lake) specifically, so confirm the current rules before you fish.
Check the official Ohio fishing regulations →
East Fork Lake (Harsha Lake) is about 105 ft (32 m) deep at its deepest point. The depth chart here comes from real state fisheries GPS surveys, so the contours reflect measured depths.
Anglers target largemouth bass, smallmouth bass, crappie, channel catfish, bluegill, white bass & hybrids, saugeye on East Fork Lake (Harsha Lake).
Standing timber (upper end) is the top-rated area: a standing timber / brush in about 4 ft of water that rates prime for crappie in spring. The map above holds the full rated-spot list for every species and season.
For largemouth bass, the summer bite is best in early morning and the evening. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Fishing on East Fork Lake (Harsha Lake) is regulated by the Ohio DNR Division of Wildlife. Check the official Ohio regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Grant Lake 10 mi · Stonelick Lake 14 mi · A.J. Jolly Lake 17 mi, KY · Licking River (Lower) 20 mi, KY · Kincaid Lake 23 mi, KY · Mounts Park South 24 mi · Ohio River - Markland Pool 26 mi, OH/KY · Winton Woods Lake 27 mi · Cowan Lake 28 mi · Little Miami River 29 mi · Bullock Pen Lake 32 mi, KY · Williamstown Lake 33 mi, KY
See how East Fork Lake (Harsha Lake) stacks up: best largemouth bass lakes in Ohio · best smallmouth bass lakes in Ohio · best saugeye lakes in Ohio · best crappie lakes in Ohio
Browse all Ohio fishing maps or see every water on DepthScout. Bathymetry credit: state fisheries survey programs. How we build these maps. Fish here with a sonar unit that logs? Send us your depth data and we'll improve this chart, credited to you. For fishing guidance only, never navigation.