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19,560-acre reservoir near Shoshoni. The lake tops out around 107 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.
Traced from the shoreline, Boysen Reservoir runs 17,888 acres with 84.7 miles of edge, broken up by an island. An index of 4.5 puts the bank firmly in maze territory: point after pocket after cove, every one a casting target. The shallow band under 15 ft claims about 18% of the surface — that's where the groceries are. Call it 15.8 mi long by 6 mi wide at the broadest reach. You'll find it in Fremont County. For a second option, Lake Cameahwait lies 3 mi west.
Come spring, look for walleye tight to the bank in 4 to 15 ft. Expect a summer slide to 15 to 35 ft, then a winter hold in 20 to 40 ft. Start at Break off the point. It's a drop-off holding about 16 ft of water and rates prime come fall. Prime time lands in the evening and early morning. A crawler harness on bottom bouncer or a deep crankbait (trolled) is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 15 ft | dusk & dawn | Rock reef (9 ft) | 1/8 oz jig + minnow, Hair jig |
| Summer | 15 to 35 ft | dusk & dawn | Break off the point (16 ft) | Crawler harness on bottom bouncer, Deep crankbait (trolled) |
| Fall | 12 to 40 ft | dusk & night | Break off the point (16 ft) | Jigging rap, Jig + big minnow |
| Winter | 20 to 40 ft | dusk & dawn | Sharp break (23 ft) | Jigging spoon + minnow head, Rattle bait |
Spring sauger on Boysen Reservoir hold shallow, usually 4 to 18 ft. By summer they slide out to 10 to 30 ft, and by winter most fish are in 15 to 45 ft. The chart's best answer is Rock reef — rock pile, 9 ft, prime for spring. Prime time lands in early morning and the evening. The summer box starts with a bottom bouncer + crawler or a 3-way rig with stickbait.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 18 ft | dawn & dusk | Rock reef (9 ft) | 3/8 oz jig + ringworm, Hair jig + minnow |
| Summer | 10 to 30 ft | dawn & dusk | Break off the point (16 ft) | Bottom bouncer + crawler, 3-way rig with stickbait |
| Fall | 12 to 35 ft | dusk & dawn | Break off the point (16 ft) | Jig + big minnow, Blade bait |
| Winter | 15 to 45 ft | dusk | Break off the point (16 ft) | Heavy jigging spoon, Jig + minnow (vertical) |
Start shallow in spring: smallmouth bass sit in 3 to 12 ft that time of year. Warm water sends them out to 10 to 30 ft; cold water stacks them in 20 to 45 ft. Top water on the chart: Rock reef, a rock pile in the 9 ft range, prime in spring. Fish it in early morning and the evening and you'll meet the bite. 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 | Rock reef (9 ft) | Ned rig, Tube jig |
| Summer | 10 to 30 ft | dawn & dusk | Rock reef (9 ft) | Drop shot (goby/minnow), Ned rig |
| Fall | 8 to 25 ft | midday & dawn | Secondary point (13 ft) | Jerkbait, Blade bait |
| Winter | 20 to 45 ft | midday | Sharp break (23 ft) | Blade bait, Hair jig |
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 15 to 35 ft for winter. The spot to know is Secondary point, a point in about 13 ft of water that rates prime for largemouth bass in fall. 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.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 10 ft | dawn & dusk | Shallow bay flat (5 ft) | Spinnerbait, Chatterbait |
| Summer | 8 to 20 ft | dawn & dusk | Break off the point (16 ft) | Texas-rigged 10" worm, Deep-diving crankbait |
| Fall | 4 to 15 ft | midday & dawn | Secondary point (13 ft) | Squarebill crankbait (shad), Spinnerbait |
| Winter | 15 to 35 ft | midday | Break off the point (16 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 10 to 25 ft; cold water stacks them in 15 to 35 ft. Top water on the chart: Dock / pier line, a dock line in the 2 ft range, prime in spring. 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.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | Dock / pier line (2 ft) | 1/16 oz jig + tube, Curly-tail grub |
| Summer | 10 to 25 ft | dawn & dusk | Break off the point (16 ft) | Jig trolled/spider-rigged, Small crankbait (trolled) |
| Fall | 8 to 20 ft | dawn | Break off the point (16 ft) | Jig + minnow combo, Small swimbait (1.5-2") |
| Winter | 15 to 35 ft | midday | Break off the point (16 ft) | Tungsten jig + soft plastic, Tiny jigging spoon |
The spring pattern is a shallow one: channel catfish in 3 to 12 ft. Midsummer fish sit out in 8 to 25 ft before dropping to 20 to 40 ft for winter. The spot to know is Shallow feeding flat, a feeding flat in about 21 ft of water that rates prime for channel catfish in fall. Plan around after dark and the evening in the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dusk | Shallow bay flat (5 ft) | |
| Summer | 8 to 25 ft | night & dusk | Shallow feeding flat (21 ft) | |
| Fall | 10 to 30 ft | dusk | Shallow feeding flat (21 ft) | |
| Winter | 20 to 40 ft | midday | Sharp break (23 ft) |
Boysen Reservoir also holds yellow perch (10 to 30 ft in summer), lake trout (32 to 107 ft in summer). Pick any of them on the map above for rated spots and bait picks.
Structure-wise the chart holds 16 features, led in depth by Deep basin at roughly 99 ft.
Access data: OpenStreetMap contributors (ODbL) — community-mapped launches. Confirm conditions and fees locally before you launch.
Season dates, license requirements, and size and bag limits for Wyoming waters are set by the Wyoming Game and Fish Department — and special regulations can apply to Boysen Reservoir specifically, so confirm the current rules before you fish.
Check the official Wyoming fishing regulations →
Boysen Reservoir is about 107 ft (33 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 walleye, sauger, smallmouth bass, largemouth bass, crappie, channel catfish, yellow perch, lake trout on Boysen Reservoir.
Break off the point is the top-rated area: a drop-off in about 16 ft of water that rates prime for walleye in fall. Every other rated spot, per species and season, is on the map above.
For walleye, the summer bite is best in the evening and early morning. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Fishing on Boysen Reservoir is regulated by the Wyoming Game and Fish Department. Check the official Wyoming regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Lake Cameahwait 3 mi · Badwater Pond 4 mi · Middle Depression Reservoir 7 mi · Ocean Lake 22 mi · Burlington Reservoir 26 mi · Pilot Butte Reservoir 30 mi · Wind River 49 mi · Sand Lake 55 mi · Bears Ears Lake 57 mi · Fiddlers Lake 58 mi · Smith Lake 58 mi · Middle Lake 58 mi
See how Boysen Reservoir stacks up: best largemouth bass lakes in Wyoming · best smallmouth bass lakes in Wyoming · best walleye lakes in Wyoming · best crappie lakes in Wyoming
More water nearby: Fremont County fishing maps (53 charts). Browse all Wyoming 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.