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4,743-acre reservoir near Featherville. The lake tops out around 303 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. Below is the species-by-species picture, pulled from the same data the map uses.
Traced from the shoreline, Anderson Ranch Reservoir runs 4,454 acres with 44.8 miles of edge. The 4.8 development index tells the story — a convoluted bank whose fishable edge far outruns the acreage. Littoral water — the productive band under ~15 ft — makes up 8% of this chart. Call it 11 mi long by 4.5 mi wide at the broadest reach. You'll find it in Elmore County. For a second option, Mountain Home Reservoir lies 23 mi southwest.
Spring puts kokanee in skinny water — 10 to 30 ft is the zone. As the season builds they drop to 30 to 70 ft, wintering in 20 to 80 ft. Fall kokanee concentrate at South Fork Boise River inflow, a prime-rated inflow / creek mouth around 5 ft. Warm-month bites cluster around early morning. A dodger + pink/orange squid on downrigger or a kokanee bug + corn covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 30 ft | dawn | Offshore hump (16 ft) | Small dodger + squid (pink), Wedding-ring spinner + corn |
| Summer | 30 to 70 ft | dawn | Break off the point (40 ft) | Dodger + pink/orange squid on downrigger, Kokanee bug + corn |
| Fall | 5 to 40 ft | dawn | South Fork Boise River inflow (5 ft) | Dodger + squid (deeper red/purple), Small spoon |
| Winter | 20 to 80 ft | dawn | Offshore hump (24 ft) | Small glow jig + corn or maggot, Tiny spoon |
In spring, rainbow trout run shallow here, mostly 5 to 20 ft. Summer pushes them deeper, 8 to 30 ft, and winter fish settle into 8 to 40 ft. South Fork Boise River inflow is the standout, an inflow / creek mouth at roughly 5 ft, rated prime for spring rainbow trout. Time it for early morning and the evening. You won't need more than a dodger + spoon (deep troll) or a flutter spoon most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | South Fork Boise River inflow (5 ft) | Inline spinner (silver), Small spoon |
| Summer | 8 to 30 ft | dawn & dusk | Old creek channel (14 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 10 to 35 ft | dawn & dusk | Old creek channel (14 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 8 to 40 ft | dawn | Break off the point (40 ft) | Jigging spoon, Tube jig (white) |
Spring puts chinook salmon in skinny water — 5 to 40 ft is the zone. Warm water sends them out to 50 to 120 ft; cold water stacks them in 30 to 90 ft. South Fork Boise River inflow is the standout, an inflow / creek mouth at roughly 5 ft, rated prime for spring chinook salmon. Plan around early morning and the evening in the warm months. A flasher + fly (green/white) or a magnum spoon on downrigger covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 40 ft | dawn & dusk | South Fork Boise River inflow (5 ft) | Trolled spoon (orange/gold), Stickbait off planer boards |
| Summer | 50 to 120 ft | dawn & dusk | Break off the point (40 ft) | Flasher + fly (green/white), Magnum spoon on downrigger |
| Fall | 10 to 50 ft | dawn & dusk | South Fork Boise River inflow (5 ft) | J-plug (glow), Flasher + fly |
| Winter | 30 to 90 ft | midday | Break off the point (40 ft) | Small spoon on a slow troll, Stickbait deep |
The spring pattern is a shallow one: smallmouth bass in 3 to 12 ft. Midsummer fish sit out in 10 to 30 ft before dropping to 20 to 45 ft for winter. The spot to know is Rock reef, a rock pile in about 5 ft of water that rates prime for smallmouth bass in spring. Plan around early morning and the evening in the warm months. Summer baits: a drop shot (goby/minnow) or a ned rig gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dawn & dusk | Rock reef (5 ft) | Ned rig, Tube jig |
| Summer | 10 to 30 ft | dawn & dusk | Offshore hump (16 ft) | Drop shot (goby/minnow), Ned rig |
| Fall | 8 to 25 ft | midday & dawn | Offshore hump (16 ft) | Jerkbait, Blade bait |
| Winter | 20 to 45 ft | midday | Break off the point (40 ft) | Blade bait, Hair jig |
When the water first warms, yellow perch slide up into 3 to 12 ft. Summer is a 10 to 30 ft game here, winter a 15 to 35 ft one. Start at Back-bay flat. It's a feeding flat holding about 10 ft of water and rates prime come spring. The feeding windows run early morning. Keep a drop-shot micro plastics or a small spoon tipped with worm rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Back-bay flat (10 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 10 to 30 ft | dawn | Offshore hump (16 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 12 to 35 ft | midday | Offshore hump (16 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 15 to 35 ft | midday & dawn | Offshore hump (16 ft) | Tungsten jig + spikes, Rattle spoon (small) |
Spring lake whitefish on Anderson Ranch Reservoir hold shallow, usually 15 to 45 ft. They move out to 40 to 90 ft in summer and finish the year down in 25 to 70 ft. Put Offshore hump first on the milk run — an offshore hump near 24 ft that grades prime for winter. The feeding windows run early morning. The summer box starts with a blade bait vertical or a small jigging spoon.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 15 to 45 ft | midday & dawn | Break off the point (40 ft) | Small jig + waxworm, Blade bait (small) |
| Summer | 40 to 90 ft | dawn | Break off the point (40 ft) | Blade bait vertical, Small jigging spoon |
| Fall | 8 to 30 ft | dusk | Rock reef (5 ft) | Small spoon (gold), Jig + plastic larva |
| Winter | 25 to 70 ft | midday & dawn | Offshore hump (24 ft) | Jigging spoon + bead chain, Tungsten jig + waxie |
Structure-wise the chart holds 19 features, led in depth by Deep basin at roughly 282 ft.
Access data: OpenStreetMap contributors (ODbL) — community-mapped launches. Confirm conditions and fees locally before you launch.
| Date | Species | Count | Size |
|---|---|---|---|
| May 20 | Kokanee | — | ~4.5" |
Source: Idaho Fish & Game stocking records, retrieved 2026-08-18.
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 Anderson Ranch Reservoir specifically, so confirm the current rules before you fish.
Check the official Idaho fishing regulations →
Anderson Ranch Reservoir is about 303 ft (92 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 kokanee, rainbow trout, chinook salmon, smallmouth bass, yellow perch, lake whitefish on Anderson Ranch Reservoir.
South Fork Boise River inflow is the top-rated area: an inflow / creek mouth in about 5 ft of water that rates prime for rainbow trout in spring. Scroll up to the map for the complete spot list by species and season.
For kokanee, the summer bite is best in early morning. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Yes — per Idaho Fish & Game stocking records records, Anderson Ranch Reservoir was most recently stocked May 20 with kokanee. The full stocking history is listed above.
Fishing on Anderson Ranch 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.
Mountain Home Reservoir 23 mi · Arrowrock Reservoir 26 mi · Lucky Peak Lake 33 mi · C.J. Strike Reservoir 42 mi · Toxaway Lake 42 mi · Perkins Lake 44 mi · Pettit Lake 46 mi · Yellow Belly Lake 47 mi · Magic Reservoir 48 mi · Bull Trout Lake 61 mi · Deadwood Reservoir 63 mi · Lake Lowell 66 mi
See how Anderson Ranch Reservoir stacks up: best smallmouth bass lakes in Idaho · best rainbow trout lakes in Idaho · best yellow perch lakes in Idaho · best chinook salmon lakes in Idaho
Browse all Idaho 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.