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191-acre reservoir near Boulder County. The lake tops out around 151 ft. Bathymetry on this water is estimated from its real outline and maximum depth. Use it to shortlist water, then verify with your electronics — and never navigate by it. The rest of this page walks each species through its year, using the map's own scoring.
The drawn water covers 220 acres wrapped in 5.9 miles of bank. The 2.8 development index tells the story — a convoluted bank whose fishable edge far outruns the acreage. 43% of the surface is littoral (under ~15 ft), per the model — cover, weeds and forage water. Figure 1.3 mi of water from one end to the other, 0.8 mi at the beam. It sits in Boulder County. Carter Lake sits 12 mi northeast — the closest neighbouring chart.
In spring, brown trout run shallow here, mostly 3 to 25 ft. Midsummer fish sit out in 25 to 60 ft before dropping to 5 to 35 ft for winter. Summer brown trout concentrate at Main-lake point, a prime-rated point around 38 ft. Fish it in after dark and early morning and you'll meet the bite. You won't need more than a spoon at the thermocline or a deep stickbait (night) most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 25 ft | dawn & dusk | open water | Stickbait off planer boards (shallow), Small spoon along mud lines |
| Summer | 25 to 60 ft | night & dawn | Main-lake point (38 ft) | Spoon at the thermocline, Deep stickbait (night) |
| Fall | 5 to 30 ft | dusk & dawn | Main-lake point (38 ft) | Jerkbait over gravel, Casting spoon |
| Winter | 5 to 35 ft | dawn | Break off the point (68 ft) | Jigging spoon, Small stickbait (slow) |
In spring, cutthroat trout run shallow here, mostly 3 to 15 ft. Midsummer fish sit out in 10 to 35 ft before dropping to 10 to 40 ft for winter. Summer cutthroat trout concentrate at Main-lake point, a prime-rated point around 38 ft. Fish it in early morning and the evening and you'll meet the bite. You won't need more than a trolled spoon (small) or an inline spinner most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 15 ft | dawn & dusk | open water | Inline spinner (silver/gold), Small spoon |
| Summer | 10 to 35 ft | dawn & dusk | Main-lake point (38 ft) | Trolled spoon (small), Inline spinner |
| Fall | 5 to 25 ft | dawn & dusk | Main-lake point (38 ft) | Casting spoon, Inline spinner |
| Winter | 10 to 40 ft | dawn | Main-lake point (38 ft) | Small jigging spoon, Marabou jig |
Spring rainbow trout on Button Rock Res hold shallow, usually 5 to 20 ft. By summer they slide out to 8 to 30 ft, and by winter most fish are in 8 to 40 ft. The chart's best answer is Main-lake point — point, 38 ft, prime for fall. Prime time lands in early morning and the evening. The summer box starts with a dodger + spoon (deep troll) or a flutter spoon.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Shallow bay flat (6 ft) | Inline spinner (silver), Small spoon |
| Summer | 8 to 30 ft | dawn & dusk | Shallow bay flat (6 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 10 to 35 ft | dawn & dusk | Main-lake point (38 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 8 to 40 ft | dawn | Break off the point (68 ft) | Jigging spoon, Tube jig (white) |
6 pieces of structure are mapped here — Deep basin, around 128 ft, is the deepest of them.
Season dates, license requirements, and size and bag limits for Colorado waters are set by the Colorado Parks & Wildlife — and special regulations can apply to Button Rock Res specifically, so confirm the current rules before you fish.
Check the official Colorado fishing regulations →
Button Rock Res is about 151 ft (46 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 brown trout, cutthroat trout, rainbow trout on Button Rock Res.
Main-lake point is the top-rated area: a point in about 38 ft of water that rates prime for cutthroat trout in summer. The interactive chart above rates every spot for each species and season.
For brown trout, the summer bite is best in after dark 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 Button Rock Res is regulated by the Colorado Parks & Wildlife. Check the official Colorado regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Carter Lake 12 mi · Marys Lake 12 mi · Boulder City Reservoir 13 mi · Estes Lake 13 mi · Lon Hagler Reservoir 16 mi · Union Reservoir 18 mi · Barker Reservoir 18 mi · Gross Reservoir 19 mi · Monarch Lake 21 mi · Waneka Lake 21 mi · Diamond Lake Upper 22 mi · Meadow Creek Reservoir 22 mi
See how Button Rock Res stacks up: best rainbow trout lakes in Colorado · best brown trout lakes in Colorado · best cutthroat trout lakes in Colorado
More water nearby: Boulder County fishing maps (8 charts). Browse all Colorado 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.