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Harpersfield Dam to Fairport Harbor. Lake Erie steelhead all fall, winter and spring. The river tops out around 12 ft. The chart is a model: real shoreline, published maximum depth, interpolated in between. A planning tool, never a navigation product. What follows comes from the same scoring engine that paints the spots above.
Drawn out, this is 1,746 acres of water rimmed by 95.1 miles of bank. An index of 16.2 puts the bank firmly in maze territory: point after pocket after cove, every one a casting target. Nothing on this chart breaks 15 ft, which makes the whole surface littoral: weeds, bait and ambush cover everywhere. End to end it runs roughly 22 mi, about 6.8 mi across. The water lies in Lake County. Closest neighbour on DepthScout: Aquilla Lake, 13 mi southwest of here.
Start shallow in spring: smallmouth bass sit in 3 to 12 ft that time of year. They don't go far with the seasons — 4 to 12 ft covers summer, 4 to 12 ft covers winter. The spot to know is Harpersfield Dam tailwater, a rock pile in about 6 ft of water that rates prime for smallmouth bass in spring. Warm-month bites cluster around early morning and the evening. Throw a drop shot (goby/minnow) or a ned rig until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dawn & dusk | Harpersfield Dam tailwater (6 ft) | Ned rig, Tube jig |
| Summer | 4 to 12 ft | dawn & dusk | Harpersfield Dam tailwater (6 ft) | Drop shot (goby/minnow), Ned rig |
| Fall | 4 to 12 ft | midday & dawn | Inside bend (mile 14.4) (9 ft) | Jerkbait, Blade bait |
| Winter | 4 to 12 ft | midday | Current seam (mile 19.5) (8 ft) | Blade bait, Hair jig |
When the water first warms, steelhead slide up into 2 to 12 ft. There's no big seasonal slide here — summer means 1 to 12 ft, winter 3 to 12 ft. Start at Current seam (mile 19.5). It's a current seam holding about 8 ft of water and rates prime come summer. The feeding windows run early morning and the evening. Keep an orange dodger + fly high in the column or a thin spoon off boards rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 12 ft | dawn & dusk | Current seam (mile 19.5) (8 ft) | Small spoon or spinner at the mouths, Jig + waxworm under float |
| Summer | 1 to 12 ft | dawn & dusk | Current seam (mile 19.5) (8 ft) | Orange dodger + fly high in the column, Thin spoon off boards |
| Fall | 2 to 12 ft | dawn & dusk | Brail Lake Dam tailrace (10 ft) | Spinner (silver/blue), Casting spoon |
| Winter | 3 to 12 ft | midday | Current seam (mile 19.5) (8 ft) | Float jig (black/purple), Bead rig |
Early season rock bass use the shallows, holding in 2 to 10 ft. Expect a summer slide to 3 to 12 ft, then a winter hold in 4 to 12 ft. Put Harpersfield Dam tailwater first on the milk run — a rock pile near 6 ft that grades prime for spring. In summer the feeding windows fall in the evening. Tie on a ned rig (small) or a marabou jig and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 10 ft | midday & dawn | Harpersfield Dam tailwater (6 ft) | 1/16 oz jig + grub, Small inline spinner |
| Summer | 3 to 12 ft | dusk | Harpersfield Dam tailwater (6 ft) | Ned rig (small), Marabou jig |
| Fall | 4 to 12 ft | midday | Harpersfield Dam tailwater (6 ft) | Small tube jig, Inline spinner |
| Winter | 4 to 12 ft | midday | Harpersfield Dam tailwater (6 ft) | Tungsten jig + plastic, Small spoon + spike |
The chart marks 36 structure features on Grand River (Steelhead Alley); the deepest is Lower river holding pools at about 10 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 Grand River (Steelhead Alley) specifically, so confirm the current rules before you fish.
Check the official Ohio fishing regulations →
Grand River (Steelhead Alley) is about 12 ft (4 m) deep at its deepest point. The contours here are modeled from the water's real shape and maximum depth, so treat them as a rough guide.
Anglers target smallmouth bass, steelhead, rock bass on Grand River (Steelhead Alley).
Harpersfield Dam tailwater is the top-rated area: a rock pile in about 6 ft of water that rates prime for smallmouth bass in spring. The interactive chart above rates every spot for each species and season.
For smallmouth 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 Grand River (Steelhead Alley) 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.
Aquilla Lake 13 mi · East Branch Reservoir 14 mi · Ashtabula River 19 mi, OH/PA · New Lyme Lake 19 mi · Punderson Lake 19 mi · Chagrin River 21 mi · LaDue Reservoir 25 mi · Mosquito Creek Lake 29 mi · Aurora Pond 31 mi · Pymatuning Reservoir 31 mi, OH/PA · Lake Erie - Central Basin East 39 mi, OH/PA/ON · West Branch Reservoir 40 mi
See how Grand River (Steelhead Alley) stacks up: best smallmouth bass lakes in Ohio · best steelhead lakes in Ohio · best rock bass lakes in Ohio
Browse all Ohio fishing maps or see every water on DepthScout. 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.