North River Greenbelt: Blue Flag Marsh


Address: 275 25th Avenue
Norwalk, IA 50211


Follow 30th Ave South out of Cumming. Turn West on Clarke Street and South on 25th Ave. Blue Flag is 2 miles South of Clarke Street on 25th.


Things to Do

We manage over 2,700 acres that are open for visitors to enjoy a variety
of year-round outdoor recreational activities.

Wildlife Viewing



North River Greenbelt: Blue Flag Marsh

Established by the Iowa Department of Transportation as a wetland mitigation site, Blue Flag adjoins the Great Western Trail. The area emphasizes constructed wetlands in the lowlands and reestablished prairie on the associated uplands. Blue Flag is named for the Blue Flag Iris that can be found here. They are a perennial plant found in shallow water along the shoreline. The plentiful game and diverse songbird populations make the 138-acres of Blue Flag Marsh a popular destination for hunting and wildlife observation. Many game species including deer, squirrels, pheasant, quail, waterfowl, and many furbearing animals are found here. There are no designated trails at Blue Flag, but it is a great area to explore off trail.

North River Greenbelt: Blue Flag Marsh

Park Rules

What to Do and What Not to Do


Parks shall be closed during the hours of 10:00 p.m. to 6:30 a.m. except for legal hunting activity

County Area

It shall be unlawful for any person to destroy, remove, damage or deface any buildings, park equipment, plant life, trees, signs, structures or natural material found within the boundaries of Blue Flag Marsh.

Motor Vehicles

All vehicles shall be confined to designated roadways and parking areas. No vehicle shall be left unattended on any county conservation area in such a manner as to obstruct traffic except in case of emergency.

Domesticated Animals

All privately owned domesticated animals shall be either carried, led by a leash or chain; kept confined in or attached to a vehicle by their owner(s) or kept under strict control of the owner. Horse riding is not allowed.

Recreation Vehicles

Recreational Vehicles are not allowed in conservation areas. Speed limit for all motorized vehicles is 15 mph.


Hunting allowed during seasons established by the Iowa Department of Natural Resources. No permanent blinds or deer stands allowed. Privileges granted by this paragraph may be revoked by an officer for violations of Iowa law or these rules and regulations.

Target Shooting

Target shooting is not allowed.

Disturbing The Peace

No person shall be guilty of an act that constitutes a breach of peace, or interferes with their visitors use or enjoyment of the county conservation areas.


All refuse must be placed in disposal cans provided or removed from the area when vacated by the user.


No camping allowed.


No fires allowed


No swimming allowed.

State of Iowa

All laws of the State of Iowa not specifically mentioned here shall apply.


Fireworks and explosives are prohibited in this conservation area.