Sign inSign up free Sign inSign up free Sign inSign up freeLake depth chart
Today's read
Rating depth structure for walleye.
Shared by DepthScout anglers. Exact spots stay private, always.
421-acre reservoir near Franklin. The lake tops out around 13 ft. These contours are modeled — built from the real shoreline and the water's maximum depth — so read them as a guide, never as navigation. Here is how the season plays out for each species, straight from the data behind the map.
Traced from the shoreline, Oneida Narrows Reservoir runs 353 acres with 7.3 miles of edge. With a shoreline index of 2.8, this water is all arms and coves — edge habitat well beyond its acreage. There is no deep basin to speak of — the entire surface is under ~15 ft, prime weed water end to end. Tip to tip the water measures near 3.2 mi with a 0.4-mi widest point. The water lies in Franklin County. For a second option, Treasureton Reservoir lies 7 mi southwest.
The spring pattern is a shallow one: rainbow trout in 3 to 13 ft. The depth story barely changes: 3 to 13 ft through summer, 3 to 13 ft in winter. The spot to know is Break off the point, a drop-off in about 6 ft of water that rates prime for rainbow trout in winter. Plan around early morning and the evening in the warm months. Summer baits: a dodger + spoon (deep troll) or a flutter spoon gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 13 ft | dawn & dusk | Main-lake point (8 ft) | Inline spinner (silver), Small spoon |
| Summer | 3 to 13 ft | dawn & dusk | Break off the point (6 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 4 to 13 ft | dawn & dusk | Main-lake point (8 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 3 to 13 ft | dawn | Break off the point (6 ft) | Jigging spoon, Tube jig (white) |
Early season walleye use the shallows, holding in 3 to 13 ft. Even in summer they hold at 4 to 13 ft; winter keeps them in 4 to 13 ft. The chart's best answer is Break off the point — drop-off, 6 ft, prime for fall. Best bite is the evening and early morning. Tie on a crawler harness on bottom bouncer or a deep crankbait (trolled) and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 13 ft | dusk & dawn | Main-lake point (8 ft) | 1/8 oz jig + minnow, Hair jig |
| Summer | 4 to 13 ft | dusk & dawn | Break off the point (6 ft) | Crawler harness on bottom bouncer, Deep crankbait (trolled) |
| Fall | 4 to 13 ft | dusk & night | Break off the point (6 ft) | Jigging rap, Jig + big minnow |
| Winter | 4 to 13 ft | dusk & dawn | Deep basin (11 ft) | Jigging spoon + minnow head, Rattle bait |
In spring, channel catfish run shallow here, mostly 3 to 12 ft. Summer pushes them deeper, 4 to 13 ft, and winter fish settle into 4 to 13 ft. Deep basin is the standout, a deep basin at roughly 11 ft, rated prime for winter channel catfish. Time it for after dark and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dusk | Shallow bay flat (3 ft) | |
| Summer | 4 to 13 ft | night & dusk | Deep basin (11 ft) | |
| Fall | 4 to 13 ft | dusk | Deep basin (11 ft) | |
| Winter | 4 to 13 ft | midday | Deep basin (11 ft) |
Count 8 structure marks on this chart. The deepest, Deep basin, sits near 11 ft.
Season dates, license requirements, and size and bag limits for Idaho waters are set by the Idaho Fish and Game — and special regulations can apply to Oneida Narrows Reservoir specifically, so confirm the current rules before you fish.
Check the official Idaho fishing regulations →
Oneida Narrows Reservoir is about 13 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 rainbow trout, walleye, channel catfish on Oneida Narrows Reservoir.
Break off the point is the top-rated area: a drop-off in about 6 ft of water that rates prime for walleye in fall. The map above holds the full rated-spot list for every species and season.
For rainbow trout, 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 Oneida Narrows Reservoir is regulated by the Idaho Fish and Game. Check the official Idaho regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Treasureton Reservoir 7 mi · Foster Reservoir 13 mi · Lamont Reservoir 13 mi · Bear Lake 29 mi, UT/ID · Newton Reservoir 30 mi, UT · Chesterfield Reservoir 43 mi · Hyrum Reservoir 47 mi, UT · Alice Lake 51 mi, WY · Stone Reservoir 51 mi · Cottonwood Lake 52 mi, WY · Porcupine Reservoir 53 mi, UT · Corral Creek Lake 2 55 mi, WY
See how Oneida Narrows Reservoir stacks up: best channel catfish lakes in Idaho · best rainbow trout lakes in Idaho
Browse all Idaho 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.