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1,221-acre lake near Jefferson County. The lake tops out around 96 ft. What you see is a modeled chart: the shoreline is real, the max depth is published, and the contours between are estimated. Plan with it; don't navigate by it. Species by species, here's what the data says the year looks like.
On the chart, Standley Lake draws 1,196 acres inside 7.6 miles of shoreline — one island included. The shoreline is moderately structured (index 1.6) — enough points and pockets to pattern. The shallow band under 15 ft claims about 39% of the surface on the model — that's where the groceries are. Tip to tip the water measures near 1.9 mi with a 1.5-mi widest point. The water lies in Jefferson County. For a second option, Arvada Reservoir lies 5 mi southwest.
Start shallow in spring: largemouth bass sit in 2 to 10 ft that time of year. Summer pushes them deeper, 8 to 20 ft, and winter fish settle into 15 to 35 ft. The spot to know is Shallow bay flat, a weed flat in about 6 ft of water that rates prime for largemouth bass in spring. Warm-month bites cluster around early morning and the evening. Throw a texas-rigged 10" worm or a deep-diving crankbait until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 10 ft | dawn & dusk | Shallow bay flat (6 ft) | Spinnerbait, Chatterbait |
| Summer | 8 to 20 ft | dawn & dusk | Shallow bay flat (6 ft) | Texas-rigged 10" worm, Deep-diving crankbait |
| Fall | 4 to 15 ft | midday & dawn | Shallow bay flat (6 ft) | Squarebill crankbait (shad), Spinnerbait |
| Winter | 15 to 35 ft | midday | Break off the point (43 ft) | Blade bait, Jigging spoon |
The spring pattern is a shallow one: smallmouth bass in 3 to 12 ft. As the season builds they drop to 10 to 30 ft, wintering in 20 to 45 ft. Top water on the chart: Main-lake point, a point in the 24 ft range, prime in fall. Time it for early morning and the evening. 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 | open water | Ned rig, Tube jig |
| Summer | 10 to 30 ft | dawn & dusk | Main-lake point (24 ft) | Drop shot (goby/minnow), Ned rig |
| Fall | 8 to 25 ft | midday & dawn | Main-lake point (24 ft) | Jerkbait, Blade bait |
| Winter | 20 to 45 ft | midday | Break off the point (43 ft) | Blade bait, Hair jig |
The spring pattern is a shallow one: white bass & hybrids in 3 to 15 ft. As the season builds they drop to 10 to 30 ft, wintering in 20 to 40 ft. Top water on the chart: Main-lake point, a point in the 24 ft range, prime in fall. Time it for early morning and the evening. Summer baits: a jigging spoon or a topwater (when schooling) gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 15 ft | midday & dawn | open water | Rooster tail / inline spinner, Curly-tail jig (white/chartreuse) |
| Summer | 10 to 30 ft | dawn & dusk | Main-lake point (24 ft) | Jigging spoon, Topwater (when schooling) |
| Fall | 8 to 25 ft | midday & dawn | Main-lake point (24 ft) | Small blade bait, Jigging spoon |
| Winter | 20 to 40 ft | midday | Break off the point (43 ft) | Jigging spoon, Blade bait (vertical) |
In spring, common carp run shallow here, mostly 2 to 10 ft. Midsummer fish sit out in 3 to 15 ft before dropping to 10 to 30 ft for winter. Spring common carp concentrate at Shallow bay flat, a prime-rated weed flat around 6 ft. Fish it in early morning and the evening and you'll meet the bite.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 10 ft | midday & dawn | Shallow bay flat (6 ft) | |
| Summer | 3 to 15 ft | dawn & dusk | Shallow bay flat (6 ft) | |
| Fall | 5 to 18 ft | midday | Shallow bay flat (6 ft) | |
| Winter | 10 to 30 ft | midday | Deep basin (82 ft) |
Start shallow in spring: channel catfish sit in 3 to 12 ft that time of year. Summer pushes them deeper, 8 to 25 ft, and winter fish settle into 20 to 40 ft. The spot to know is Shallow bay flat, a weed flat in about 6 ft of water that rates good for channel catfish in spring. Warm-month bites cluster around after dark and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dusk | Shallow bay flat (6 ft) | |
| Summer | 8 to 25 ft | night & dusk | open water | |
| Fall | 10 to 30 ft | dusk | Deep basin (82 ft) | |
| Winter | 20 to 40 ft | midday | Deep basin (82 ft) |
The spring pattern is a shallow one: crappie in 2 to 8 ft. As the season builds they drop to 10 to 25 ft, wintering in 15 to 35 ft. Top water on the chart: Shallow bay flat, a weed flat in the 6 ft range, prime in spring. Time it for early morning and the evening. Summer baits: a jig trolled/spider-rigged or a small crankbait (trolled) gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | Shallow bay flat (6 ft) | 1/16 oz jig + tube, Curly-tail grub |
| Summer | 10 to 25 ft | dawn & dusk | Shallow bay flat (6 ft) | Jig trolled/spider-rigged, Small crankbait (trolled) |
| Fall | 8 to 20 ft | dawn | Shallow bay flat (6 ft) | Jig + minnow combo, Small swimbait (1.5-2") |
| Winter | 15 to 35 ft | midday | Deep basin (82 ft) | Tungsten jig + soft plastic, Tiny jigging spoon |
Standley Lake also holds walleye (15 to 35 ft in summer), yellow perch (10 to 30 ft in summer), bluegill (4 to 15 ft in summer), rainbow trout (8 to 30 ft in summer). Pick any of them on the map above for rated spots and bait picks.
The chart marks 8 structure features on Standley Lake; the deepest is Deep basin at about 82 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 Colorado waters are set by the Colorado Parks & Wildlife — and special regulations can apply to Standley Lake specifically, so confirm the current rules before you fish.
Check the official Colorado fishing regulations →
Standley Lake is about 96 ft (29 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 largemouth bass, smallmouth bass, white bass & hybrids, common carp, channel catfish, crappie, walleye, yellow perch, bluegill, rainbow trout on Standley Lake.
Shallow bay flat is the top-rated area: a weed flat in about 6 ft of water that rates prime for largemouth bass in spring. Scroll up to the map for the complete spot list by 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 Standley Lake 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.
Arvada Reservoir 5 mi · Jim Baker Reservoir 6 mi · Berkeley Lake 7 mi · Rocky Mtn Lake 8 mi · Waneka Lake 9 mi · Hunters Glen Lake 9 mi · Gross Reservoir 14 mi · Boulder City Reservoir 16 mi · Milavec Reservoir 20 mi · Barker Reservoir 21 mi · Union Reservoir 22 mi · Chatfield Reservoir 23 mi
See how Standley Lake stacks up: best largemouth bass lakes in Colorado · best smallmouth bass lakes in Colorado · best walleye lakes in Colorado · best crappie lakes in Colorado
More water nearby: Jefferson County fishing maps (5 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.