About this place
Mill Flat is a developed campground of 7 individual units, set out in the open inside a canyon at 5,938 feet. No booking.
The season varies, usually June through October.
There are restrooms, and trailers and tents both work here.
You can fish for trout in the stream, and the trail system carries on through the mountains, canyon after canyon.
The facts
- Cost
- Free to camp
- Roads around it
- Park on the gravel spurs provided. Do not park on the road or block it
- Stay limit
- 14 days in any 28
- Toilet
- Yes
- Type
- Specific campsite
- Managed by
- Sawtooth National Forest
The roads around this place are not maintained for a regular car. That comes from the US Forest Service, who grade every road by the kind of vehicle it is looked after for. Those records cover the roads nearby. They do not cover the last stretch in to the campsite, and nobody has checked that part. Treat this as a warning. We are not promising what you will find when you get there. If you have driven it, tell us what it was like and we will say so here.
Rules and restrictions
You can camp here for 14 days. After that you have to leave National Forest land in the Minidoka Ranger District altogether. Stay off it for 14 days before you camp there again.
Put another way, 14 days in any 28 is the most you get. It applies to a group the same as it applies to one person, and going over it can bring a fine.
No horses in the campground.
Two cars per site, and both go on the gravel strip provided. Do not park on the road and do not block it.
The Minidoka Ranger District Office in Burley deals with questions about this. Their phone number is 208-678-0430.
Getting there
Mill Flat is on Haigler Canyon Road, Forest Road 565, up a narrow canyon.
Coordinates 42.430015, -113.013825
Open in Google Maps Agency page
What is near here
There is another spot of ours within reach, and some better-known places further out.
- California National Historic Trail | Idaho Directions
- Massacre Rocks State Park Directions
- Sublett Range High Point Directions
- Black Pine Peak Directions
- Black Pine Mountains High Point Directions
Every distance on this page is the driving distance. A short distance can still take a long time. The road may be closed for the season, covered in snow, or washed out. Many of these roads are dirt. Plan your route before you leave home. Out here there is often no phone signal to look it up on the way.
Nearest town and supplies
- Rockland, ID Directions
- American Falls, ID Directions
American Falls is big enough that you’d normally expect fuel and somewhere to buy food. Nobody from here has been to check, so don’t count on it if you’re running low.
Why “at least”: this route is hard to measure. We worked the drive out twice, with two separate mapping tools, and they gave different answers. That usually means there is no road close to the campsite, so the drive doubles back a long way. The figure above is the longer of the two. The real drive could be further still, so check the route before you set off.
Why the drive to town is usually twice what the map says — what we found measuring every campsite in this guide.
When it’s time to move on
You can camp here for 14 days. After that you have to move on. This is Forest Service land, and each forest sets its own rule for how far you have to go, so check before you travel.
The nearest other free campsite in this guide is Clear Creek Campground, Utah — 37 miles in a straight line, but at least a 64 mile drive. Three more sit closer than 25 miles, if the rule here allows them.
Why “at least”: there is no road right at this campsite, so the drive is hard to measure and the real one could be further. Check the route before you set off.
This guide covers five states and does not list every free campsite, so there may be something closer that we do not hold. Check this site’s own rule before you rely on it.
Have you been here?
Fees and access change, and the records do not always keep up. If you have been, tell us what you found.
Thank you, that is recorded. It helps the next person.
Add road notes for this site
The thing we cannot get from any government record is what the drive in is actually like. If you have done it, this is the most useful thing you can leave behind. We read everything before it appears, and we print a first name with it if you give one.
Thank you. A person will read it before it goes on the page.
Where this information comes from
The description on this page is ours. The facts in it, and the fee and facility details below it, come from the Forest Service’s own records, read in August 2026.