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28-acre lake in Wyandot County, Ohio. The lake tops out around 24 ft. The depth chart comes from published agency bathymetric survey data, so the contours are survey-derived rather than computer-modeled. Here's the year, species by species, as the scoring engine sees it.
Traced from the shoreline, Upper Sandusky Reservoir #1 runs 29 acres with 1.8 miles of edge. That shoreline is heavily fingered (development index 2.4) — bays, points and pockets everywhere, which multiplies the fishable edge. Roughly 79% of the water is 15 ft or less, the band where the food chain lives. Tip to tip the water measures near 0.7 mi with a 0.2-mi widest point. You'll find it in Wyandot County. The nearest mapped water is Upper Sandusky Reservoir #2, 1 mi to the east.
The spring pattern is a shallow one: largemouth bass in 2 to 10 ft. Midsummer fish sit out in 8 to 20 ft before dropping to 7 to 24 ft for winter. The spot to know is Shallow bay flat, a weed flat in about 3 ft of water that rates prime for largemouth bass in spring. Plan around early morning and the evening in the warm months. Summer baits: a texas-rigged 10" worm or a deep-diving crankbait gets it done.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 10 ft | dawn & dusk | Shallow bay flat (3 ft) | Spinnerbait, Chatterbait |
| Summer | 8 to 20 ft | dawn & dusk | Main-lake point (7 ft) | Texas-rigged 10" worm, Deep-diving crankbait |
| Fall | 4 to 15 ft | midday & dawn | Main-lake point (7 ft) | Squarebill crankbait (shad), Spinnerbait |
| Winter | 7 to 24 ft chart-limited; documented 15 to 35 ft | midday | Deep basin (23 ft) | Blade bait, Jigging spoon |
Start shallow in spring: crappie sit in 2 to 8 ft that time of year. Warm water sends them out to 7 to 24 ft; cold water stacks them in 7 to 24 ft. Top water on the chart: Deep basin, a deep basin in the 23 ft range, prime in winter. Fish it in early morning and the evening and you'll meet the bite. Throw a jig trolled/spider-rigged or a small crankbait (trolled) until the fish tell you otherwise.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | Shallow bay flat (3 ft) | 1/16 oz jig + tube, Curly-tail grub |
| Summer | 7 to 24 ft chart-limited; documented 10 to 25 ft | dawn & dusk | Deep basin (23 ft) | Jig trolled/spider-rigged, Small crankbait (trolled) |
| Fall | 8 to 20 ft | dawn | Deep basin (23 ft) | Jig + minnow combo, Small swimbait (1.5-2") |
| Winter | 7 to 24 ft chart-limited; documented 15 to 35 ft | midday | Deep basin (23 ft) | Tungsten jig + soft plastic, Tiny jigging spoon |
In spring, bluegill run shallow here, mostly 1 to 6 ft. Midsummer fish sit out in 4 to 15 ft before dropping to 7 to 24 ft for winter. Spring bluegill concentrate at Shallow bay flat, a prime-rated weed flat around 3 ft. Fish it in early morning and the evening and you'll meet the bite. You won't need more than a small sponge spider (fly) or a micro tube jig most summer days.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 6 ft | midday & dusk | Shallow bay flat (3 ft) | 1/32 oz jig + micro plastic, Tiny popper (evenings) |
| Summer | 4 to 15 ft | dawn & dusk | Shallow bay flat (3 ft) | Small sponge spider (fly), Micro tube jig |
| Fall | 6 to 18 ft | midday | Shallow bay flat (3 ft) | Micro jig + waxworm, Small spoon tipped |
| Winter | 7 to 24 ft chart-limited; documented 10 to 25 ft | midday | Deep basin (23 ft) | Tungsten ice jig + plastic, Tiny spoon |
The spring pattern is a shallow one: channel catfish in 3 to 12 ft. Midsummer fish sit out in 7 to 24 ft before dropping to 7 to 24 ft for winter. The spot to know is Deep basin, a deep basin in about 23 ft of water that rates prime for channel catfish in winter. Plan around after dark and the evening in the warm months.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dusk | Shallow bay flat (3 ft) | |
| Summer | 7 to 24 ft chart-limited; documented 8 to 25 ft | night & dusk | Deep basin (23 ft) | |
| Fall | 7 to 24 ft chart-limited; documented 10 to 30 ft | dusk | Deep basin (23 ft) | |
| Winter | 7 to 24 ft chart-limited; documented 20 to 40 ft | midday | Deep basin (23 ft) |
The chart marks 4 structure features on Upper Sandusky Reservoir #1; the deepest is Deep basin at about 23 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 Upper Sandusky Reservoir #1 specifically, so confirm the current rules before you fish.
Check the official Ohio fishing regulations →
Upper Sandusky Reservoir #1 is about 24 ft (7 m) deep at its deepest point. The depth chart comes from published agency bathymetric survey data, so the contours are survey-derived rather than computer-modeled.
Anglers target largemouth bass, crappie, bluegill, channel catfish on Upper Sandusky Reservoir #1. This isn't a survey of the water — none is published for it — but an informed estimate from the species common to the region, narrowed by this water's depth, size and each species' range.
Shallow bay flat is the top-rated area: a weed flat in about 3 ft of water that rates prime for largemouth bass 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 Upper Sandusky Reservoir #1 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.
Upper Sandusky Reservoir #2 1 mi · Outhwaite Reservoir 17 mi · Riley Reservoir 17 mi · Bucyrus Reservoir #2 18 mi · Findlay 1 Reservoir 21 mi · Findlay 2 Reservoir 21 mi · Lake LeComte 23 mi · Veterans Memorial Lake 24 mi · Amick Reservoir 24 mi · Lamberjack Reservoir 25 mi · Powers Reservoir 25 mi · Mount Gilead Lake 30 mi
See how Upper Sandusky Reservoir #1 stacks up: best largemouth bass lakes in Ohio · best crappie lakes in Ohio · best bluegill lakes in Ohio · best channel catfish lakes in Ohio
Browse all Ohio fishing maps. See every water on DepthScout. Bathymetry: published agency survey data. 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.