Park County, CO · Reservoir
Eleven Mile Reservoir
A 3,400-acre Park County reservoir on the South Platte at 8,600 ft, managed by Eleven Mile State Park. Known for trophy rainbow and brown trout, northern pike, and yellow perch, with heavy ice fishing in winter.
Live · updated
Top picks today
Rainbow Trout & Brown Trout — tied at the top (23/100)
2 species tied for best of 3 tracked at Eleven Mile Reservoir.
Atmosphere
Water
Sun & Moon
Species at Eleven Mile Reservoir
3 species tracked, ranked by today's conditions. The top 2 (tied) are open below — tap any species to expand it, or a chip to focus.
#1 Rainbow Trout Skip the Rainbow Trout trip today. In season 23/100
What's helping
- 7 mph wind — light chop — baitfish active, fish willing to feed
What's hurting
- Thunderstorms — get off the water immediately when storms approach
About. Oncorhynchus mykiss — The most heavily stocked trout in Maryland. Put-and-take fisheries across the state plus holdover/wild fish in Western MD streams (Savage, Youghiogheny tailwater, Gunpowder). Takes PowerBait, small spinners, and standard dry/nymph patterns.
Prefers. Water 45–68°F (ideal 55°F) · either tide · depth 3–20 ft.
- Daily creel
- 4
Statewide trout aggregate: 4/day, 8 in possession (rainbow, brown, brook, cutthroat). No statewide minimum size; many waters carry slot or gear restrictions — confirm the water-specific CPW rule.
Source: Colorado non-tidal regulations · verified 2026-06-01.
#1 Brown Trout Skip the Brown Trout trip today. In season 23/100
What's helping
- 7 mph wind — light chop — baitfish active, fish willing to feed
What's hurting
- Thunderstorms — get off the water immediately when storms approach
About. Salmo trutta — Naturally reproduces in the Gunpowder River tailwater (Loch Raven below Prettyboy) and several Western MD streams; also heavily stocked. Typically more wary than rainbows. Classic mayfly hatches on the Gunpowder — sulphurs, BWOs, caddis. Streamer-eaters after dark.
Prefers. Water 45–68°F (ideal 55°F) · either tide · depth 3–25 ft.
- Daily creel
- 4
Part of the statewide 4-fish trout aggregate (8 in possession). No statewide minimum size; Gold Medal and trophy waters often add gear and slot limits.
Source: Colorado non-tidal regulations · verified 2026-06-01.
#3 Yellow Perch Skip the Yellow Perch trip today. In season 17/100
What's helping
- 7 mph wind — light chop — baitfish active, fish willing to feed
What's hurting
- incoming tide — yellow perch prefers slack tide
- Thunderstorms — get off the water immediately when storms approach
About. Perca flavescens — Late-winter and early-spring favorite. Schools up in tidal tributaries for the pre-spawn run in February and March, taking small minnows, shad darts, and small jigs. A classic Eastern Shore "neds" fishery.
Prefers. Water 45–70°F (ideal 58°F) · slack tide · depth 5–30 ft.
- Daily creel
- 20
20/day east of the Continental Divide; unlimited west of the Divide.
Source: Colorado non-tidal regulations · verified 2026-06-01.
Location Info
Water Body
Reservoir
Access
Pier, shore, and ramp
Jurisdiction
Colorado non-tidal
Coordinates
Local reports & rules for Eleven Mile Reservoir: Colorado Parks & Wildlife fishing & regulations → · fish-consumption advisory →
Nearby Access Points
Frequently Asked
Do I need a fishing license to fish at Eleven Mile Reservoir?
Yes (anglers age 16 and older). To fish at Eleven Mile Reservoir you need the appropriate state fishing license. See the agency's current rules: the state agency website
What fish are commonly targeted at Eleven Mile Reservoir?
Eleven Mile Reservoir is listed on this site for 3 commonly-targeted species: Rainbow Trout, Brown Trout, Yellow Perch. Which species is currently in season and which is scoring highest today is shown in the per-species ranking on this page.
When is the best time to fish at Eleven Mile Reservoir?
It depends more on the species and the day's conditions than on a fixed "best hour." Water temperature, weather, and — at tidal locations — the stage of the tide drive activity most. The per-species ranking on this page scores every target species at Eleven Mile Reservoir against today's live conditions, so the fish near the top are your best bets right now; check back as conditions change through the day.
What kind of access does Eleven Mile Reservoir have?
Eleven Mile Reservoir has multiple access types — pier, shoreline, and at least one public boat ramp.
Which state's fishing regulations apply at Eleven Mile Reservoir?
state agency regulations apply at Eleven Mile Reservoir. Size limits, creel limits, and seasonal closures are listed per species on each species page. Always confirm against the agency source linked from each regulation block — emergency closures can take effect mid-season.
Is Eleven Mile Reservoir tidal water?
No. Eleven Mile Reservoir is non-tidal — water level varies with rainfall, seasonal flow, and (where applicable) upstream dam releases rather than tidal exchange.