Mariana Butte Golf Course

County Offices, Courts and the Landfill will be closed Monday, May 25 in observance of Memorial Day. Critical services at Larimer County will not be disrupted by this closure.


Flatiron Reservoir Conditions

Park elevation: 5462'
Report last updated: 5/3/2015

Current Conditions

photo from park
Helping to keep our park clean
Park situation

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 onl. Cash or checks will no longer be accepted at the self-service automated pay stations.

 Effective Tuesday September 2nd, The Pinewood campgrounds will be closed until spring for a complete renovation.  The only fishing access will be the Fisherman's Cove parking lot.  There will be no camping available until the renovation is complete.

Fishing conditions

Cheyenne Day Use fishing access will be open 8am-8pm as conditions allow.

Rainbow trout (10" and bigger) were recently stocked. People have been catching them on green powerbait and worms. 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 recieve messages from fellow anglers and share your fishing knowledge!

Water level and boat ramps

Water levels at this reservoir fluctuate daily.

No boating facilities are available at this reservoir. 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:

  • Saturday-Thursday - 8 a.m. - 6 p.m.
  • Friday - 8 a.m. - 8 p.m. 

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.


Mule deer and elk are plentiful this time of year. Drive carefully as wildlife often gathers near the roads.

Park events

A complete list of upcoming events can be found at

See the Parks and Open Lands event calendar.
Background Image: Mariana Butte Golf Course by Steve Moore. All rights reserved.