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Flatiron Reservoir
Flatiron Reservoir is 47 acres of water surrounded by 200 acres of public land. It is located northwest of Carter Lake at an elevation of 5,470 feet and is part of the Colorado-Big Thompson Project operated by the Bureau of Reclamation and the Northern Colorado Water Conservancy District. The purpose of this water project is to divert water from the west slope to the east slope for drinking water, irrigation, and hydropower generation. Reclamation is solely responsible for power generation. The agencies jointly manage water levels for irrigation, municipal, and industry use.
Recreation is managed by Larimer County Natural Resources. Flatiron Reservoir is a popular spot for fishing and family camping.
No boating or swimming is allowed on Flatiron Reservoir; however, nearby Carter Lake offers both boating opportunities and a swimbeach. Park Entrance Permits and Camping Fees are required.
- Flatiron Reservoir Map
- Driving Directions
- Current Conditions
- Campgrounds
- Camper Cabins
- Brochure
- Events Calendar
General Regulations
For specifics, ask a ranger for a copy of the Regulations Brochure.- No boating allowed.
- Swimming is prohibited except at the swim beach at Carter Lake at Dam 2.
- No access to the southeast side, or the dam, due to Homeland Security restrictions.
- Quiet hours are 10 PM to 6 AM.
- Collection of firewood, including cutting of trees and branches is not allowed.
- Firearms or fireworks are prohibited.
- Glass containers are not allowed.
- Public consumption of alcohol above 3.2% is prohibited (no kegs allowed).
- Dogs must be on leashes not longer than 10 feet at all times. Dogs are not allowed at the swim beach.
