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149-acre lake near Grand County. The lake tops out around 14 ft. The chart is a model: real shoreline, published maximum depth, interpolated in between. A planning tool, never a navigation product. What follows comes from the same scoring engine that paints the spots above.
On the chart, Monarch Lake draws 149 acres inside 2.6 miles of shoreline. Index 1.5 on the shoreline: a few honest points and pockets, nothing labyrinthine. The whole water is littoral — nothing here runs deeper than ~15 ft, so it's all weed-and-bait territory. End to end it runs roughly 0.8 mi, about 0.4 mi across. The water lies in Grand County. For a second option, Meadow Creek Reservoir lies 4 mi south.
The spring pattern is a shallow one: brook trout in 2 to 14 ft. The depth story barely changes: 4 to 14 ft through summer, 2 to 14 ft in winter. The spot to know is Deep basin, a deep basin in about 12 ft of water that rates prime for brook trout in summer. Plan around early morning and the evening in the warm months. Summer baits: a small spoon fished deep or a trolled lake-clear wobbler + worm gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 14 ft | dawn & dusk | Main-lake point (8 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 4 to 14 ft | dawn & dusk | Deep basin (12 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 14 ft | midday & dawn | Main-lake point (8 ft) | Small spoon (orange), Spinner |
| Winter | 2 to 14 ft | dawn | Deep basin (12 ft) | Small jigging spoon, Tungsten jig + plastic |
Spring brown trout on Monarch Lake hold shallow, usually 2 to 14 ft. Depth-wise the year is flat: 4 to 14 ft in summer, 2 to 14 ft once it turns cold. Put Break off the point first on the milk run — a drop-off near 6 ft that grades prime for summer. The feeding windows run after dark and early morning. The summer box starts with a spoon at the thermocline or a deep stickbait (night).
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 14 ft | dawn & dusk | Main-lake point (8 ft) | Stickbait off planer boards (shallow), Small spoon along mud lines |
| Summer | 4 to 14 ft | night & dawn | Break off the point (6 ft) | Spoon at the thermocline, Deep stickbait (night) |
| Fall | 2 to 14 ft | dusk & dawn | Main-lake point (8 ft) | Jerkbait over gravel, Casting spoon |
| Winter | 2 to 14 ft | dawn | Break off the point (6 ft) | Jigging spoon, Small stickbait (slow) |
Start shallow in spring: rainbow trout sit in 4 to 14 ft that time of year. They don't go far with the seasons — 4 to 14 ft covers summer, 3 to 14 ft covers winter. Top water on the chart: Break off the point, a drop-off in the 6 ft range, prime in winter. Fish it in early morning and the evening and you'll meet the bite. Throw a dodger + spoon (deep troll) or a flutter spoon until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 14 ft | dawn & dusk | Main-lake point (8 ft) | Inline spinner (silver), Small spoon |
| Summer | 4 to 14 ft | dawn & dusk | Break off the point (6 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 4 to 14 ft | dawn & dusk | Main-lake point (8 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 3 to 14 ft | dawn | Break off the point (6 ft) | Jigging spoon, Tube jig (white) |
Structure-wise the chart holds 6 features, led in depth by Deep basin at roughly 12 ft.
| Date | Species | Count | Size |
|---|---|---|---|
| Jul 17 | Catchable trout | — | — |
Source: Colorado Parks & Wildlife stocking report, retrieved 2026-08-18.
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 Monarch Lake specifically, so confirm the current rules before you fish.
Check the official Colorado fishing regulations →
Monarch Lake is about 14 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 brook trout, brown trout, rainbow trout on Monarch Lake.
Break off the point is the top-rated area: a drop-off in about 6 ft of water that rates prime for brown trout in summer. Open the map above to see every rated spot for each species and season.
For brook 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.
Yes — per Colorado Parks & Wildlife stocking report records, Monarch Lake was most recently stocked Jul 17 with catchable trout. The full stocking history is listed above.
Fishing on Monarch 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.
Meadow Creek Reservoir 4 mi · Granby Reservoir 6 mi · Diamond Lake Upper 9 mi · Shadow Mountain Reservoir 10 mi · Grand Lake 10 mi · Bob Lake 11 mi · Woodland Lake 11 mi · Willow Creek Reservoir 12 mi · Crater Lake #1, Upper 15 mi · Barker Reservoir 16 mi · Marys Lake 20 mi · Button Rock Res 21 mi
See how Monarch Lake stacks up: best rainbow trout lakes in Colorado · best brown trout lakes in Colorado · best brook trout lakes in Colorado
More water nearby: Grand County fishing maps (6 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.