Holiday Fog in Larimer County

Flatiron Reservoir Conditions

Park elevation: 5462'
Report last updated: 4/12/2017

Current Conditions

photo from park
Daily water fluctuations make ice unstable. Please use caution on the shoreline and do not approach ice. Photo by A. Louie
Park situation

Cheyene Day Use area is now open for fishing access.

Ice Fishing is NOT allowed.

Daily Entrance permits are available for purchase at the Automated Pay Stations on South CR 31 and West CR 8E, near the entrance station gates. The automated pay stations accept credit and debit cards only. Cash or checks will no longer be accepted at the self-service automated pay stations.

Fishing Regulations


Stocked on 8/4/16 with 3,700 trout.

Cheyenne Day Use fishing access is now open for the season.

The limit for trout is four (4) per person with no size requirement.

For the most current conditions and stocking reports, check the Colorado Parks and Wildlife website. Or join our fishing forum at to send and receive messages from fellow anglers and share your fishing knowledge!

Water level and boat ramps

Water levels at this reservoir fluctuate daily.

No boating facilities.

All water recreation activities, including but not limited to, swimming, wading, and boating of any type (including belly boats, kick boats, canoes, and kayaks) are STRICTLY PROHIBITED.


Attention campers: If you do not have a reservation for a campsite, you will need to visit the Larimer County Administrative Office at 1800 South County Road 31 to purchase your campsite during the following hours:

Monday - Friday 8:00am- 4:30pm

Saturday- Sunday 10:00am- 4:00pm

Camping fees will no longer be accepted at your campsite. A reservation for camping is highly recommended. You may now reserve a campsite one day in advance. 

To reserve a campsite, please call (800) 397-7795 or visit

Camping reservations may now be made from 1-180 days in advance.


Many of our local elk and deer have begun the frequent the Carter Lake area. Please be aware and exercise caution when approaching and driving through the area this season.

Bald and golden eagles have been spotted recently in the area. Mule deer and the occasional elk have been browsing in and around the campground.

Our resident geese appreciate responsible disposal of fishing line, hooks, and other trash.

No Hunting nor collecting of antlers allowed in Larimer County Parks

Park events

A complete list of upcoming events can be found at

See the Parks and Open Lands event calendar.
Background Image: Holiday Fog III, AJ Schroetlin . All rights reserved.