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Home/Counties/Larimer County/Zimmerman Lake

Zimmerman Lake

lake
Larimer County, Colorado
4.6(8 reviews)

About Zimmerman Lake

Zimmerman Lake is a small, strikingly beautiful alpine lake in the Cameron Peak area of Larimer County, reached by a short but steep one-mile hike that gains roughly 450 feet from a trailhead starting near 10,050 feet. The combination of easy access, year-round recreation, and genuine high-country scenery makes Zimmerman Lake one of the most rewarding quick-hit destinations along the Poudre Canyon corridor northwest of Fort Collins.

The hike follows an old forest road that climbs steadily through spruce and fir before opening onto the lakeshore, where clear water reflects the surrounding ridgeline. Most hikers reach the top in 30 to 45 minutes, though the altitude and grade will test anyone not acclimated to elevations above 10,000 feet. Once at the lake, an unofficial trail loops around the shoreline, offering different vantage points, though sections can be faint and require some route-finding.

Zimmerman Lake is managed as a greenback cutthroat trout egg-collection area by the state, making it an important conservation site for Colorado's state fish. Fly fishing here targets native greenback cutthroat trout, though catch rates can vary widely depending on the season. Early summer, shortly after ice-off, tends to produce the best action. By early September, surface activity drops off and the fishing becomes inconsistent. Anglers should check current Colorado Parks and Wildlife regulations before casting, as special rules may apply.

Winter transforms the area into a popular snowshoeing and cross-country skiing destination. The Meadows Trail to the east draws steady traffic from snow-sport enthusiasts, and the frozen lake creates a quiet, snow-covered landscape that feels far more remote than its short distance from the road suggests. Moose sightings are common near the lake in every season, so keep a respectful distance and stay alert on the trail.

The parking area has a vault toilet, though conditions vary. There is no potable water at the trailhead or the lake, so pack everything you need. Zimmerman Lake is best experienced between late June and early October for hiking and fishing, and December through March for snowshoeing and skiing. Whether you are looking for a quick alpine escape, a chance to see greenback cutthroat in their native habitat, or a winter snowshoe outing, Zimmerman Lake punches well above its weight for a one-mile hike.

Reviews (5)
J
Joe Private Pilot

I'm almost 70 years old, and this was quite a strenuous hike up to Zimmerman Lake from the parking lot. Due to the lake's remoteness and being a greenback cutthroat egg collecting area for the State, I assumed that Zimmerman had potential for excellent fishing. It was September 2nd, 2025 when I hiked up to the lake. The parking lot's vault toilet was the filthiest that I have encountered in a long time. At 8:00am, there was still frost on the grass in the parking lot area, as I started the climb. I was huffing and puffing heavily, but the climb was doable for me. Reaching the lake after 45 minutes of slow and continuous climbing, I was greeted by a perfectly serine setting, with clear waters and calm winds. What a beautiful place! I've fly fished for trout for most of my life, and I'm pretty good at catching fish. I can also read the water for signs of fish activity. Unfortunately, there were no signs of "fishyness" as I call it. No rises, swirls or jumping trout anywhere on the lake. I cast my fly line out from the shores for 1.5 hours with not a single strike. I tried different flies, but still nothing. Time to go elsewhere. This may have been a prime spot to fish in the past, but I sure as heck didn't have any luck. Maybe earlier in the season, after the ice melts off the lake, this may be a good place to try, but it was a bust for me in early September. Go up there for the beauty, but not for the fishing.

J
Joey Hartsough

Nice hike up to the lake. I was the only person at the lake.

K
Kevin Parker

Wow!

D
David Lobree

This lake is reached by a short (about 1 mile) hike up a fairly steep, old road leads you to one of the most beautiful spots in Northern Colorado. The trail ascends up about 450' in elevation from a starting elevation of about 10,050', so be prepared for a workout, especially if you are not used to the altitude. It is popular in the summer for fishing for the Colorado State Fish, the Greenback Cutthroat Trout in the summer and in the winter for snow shoeing and XC skiing. I have seen moose at the lake more than once, so keep on the lookout. You can take the unofficial trail around the lake, although it is a little hard to follow in some places. The Meadows Trail to the east is popular for snow shoeing and XC skiing.

B
backcountry164

Short 1 mile hike to a beautiful little mountain lake. Hike is steep but follows an old road so is easily manageable.

Activities

HikingFishingFly FishingSnowshoeingBird WatchingWalking

Amenities

Vault ToiletsParkingUnpaved Trail

Fish Species

Greenback Cutthroat Trout
At a Glance
Typelake
Permit RequiredNo
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