
Marshall Lake is a small, marshy pond, really, just south of Flagstaff. Its’ reedy shores are full of birds, and the forested hills around it are full of dispersed campers.
Arizona does not have many natural lakes, but Marshall Lake is one of them. It’s really only a lake at its rare high water mark. At normal levels it is a series of connected ponds. There are times when it is completely dry.

On my last visit, my son and I were able to paddle a canoe through breaks in the reeds and go from pond to pond to see the birds and hear the frogs and waver to the scattered fisherfolk. At high levels, AZ Game and Fish will stock some trout in here. Folks have also caught channel catfish, northern pike, crappie and the occasional largemouth bass.
More numerous than fisherfolk are the ducks and coots. The Coconino National Forest slipped a good line past the fedbots:
“Marshall Lake is a small marshy body of water that’s generally full of coots and other waterfowl splashing, flapping, and cooting around. It is such valuable wildlife habitat that it is managed in partnership by Ducks Unlimited and the Arizona Game and Fish Department.”


Signs and portents by the lake.
You can also see osprey and even eagles around the lake. The hills around are popular for elk and are grazing allotments for cattle.

Dispersed camping means no services: no tables, no trash, no outhouses, no water. When we were there in late June, we were under a fire restriction, which covers all of these sites. Even so, the area is popular. If you aren’t up there by mid-morning Saturday on a weekend with good weather, you are likely camping somewhere else. A lot of your neighbors are clearly going to use all 14 days of the stay limit.


Marshall Lake is seasonal, approximately May-October. Outside that window, the roads might close indefinitely due to snow.
The lake is located about 12 miles south of Flagstaff, off of lake Mary Road (aka FR3). Take that road south past the Lake Mary recreation sites to FR 128 which switchbacks up the hill before becoming graded dirt. Follow the signs.
There are no fees. There is a small parking lot next to the “boat launch”.
The observatory on the top of Anderson Mesa is not open to the public. The nearby trailhead is, and I have written about that in my book: 5 Star Hikes Sedona and Flagstaff.
There is a plan to improve the wetland conditions here, somehow. More information can be found here:
We quote from their 2013 PDF:
Current Status: The wetland is a perched clay basin with limited inflow from rain and snowmelt. As a result, Marshall Lake is sensitive to drought and is dry in many years. AGFD is conducting a water balance and feasibility assessment for habitat improvements in the Marshall Lake watershed. A restoration plan will be developed in coordination with the Coconino National Forest in 2015.
And finally, a video: