I didn't check EVERY Corps of Engineers campground in Tennessee, let alone the other states in the path of the eclipse, but at the one randomly-selected CoE campground I checked, Defeated Creek Park on the shore of Cordell Hull Lake, has some campsites with water-electric hookups available Monday and Tuesday, but
not Sunday. And that was just at
one campground I selected at random.
I'm not going to watch the eclipse this year (I saw one back on May 30th, 1984 without ever leaving New Orleans), so I'm not going to put a lot of time into looking for everyone else's campsites for this eclipse. But I
will tell you where and how to look for Corps of Engineers campsites that might still be available…
You can start here:
https://corpslakes.erdc.dren.mil/visitors/visitors.cfm
Then select a state in the path of the eclipse.
Then select an activity, in this case camping.
Then press "Find Lakes."
Then pick a lake project in the part of the state you're interested in.
That takes you to a page that lists all of the campgrounds on that lake. Some campgrounds will have a Corps Castle indicating that it's a CoE campground— the website also lists state and commercial campgrounds located on a Corps lake, but those are probably already booked up, so we'll ignore them.
Some of the cmpgrounds with a Castle emblem also have a green "Reserve" box. That box is a link to that campground's page on Recreation.gov (CoE uses Recreation.gov instead of the more widely known ReserveAmerica). Press the "Reserve" box.
This will open a new window. On the Recreation.gov site for that campground, select "Date Range Availability." For some unknown reason, right now the Arrival Date pull-down menu is grayed out so you can't just enter a date to speed up the search.
Then select "Next two weeks" to move to the right until the dates you're interested in appear.
Then just scroll down until you find a campsite that hasn't already been reserved for the dates in question. If there is one.
If you find a site, reserve it. If you don't, repeat the process at the next campground on that same lake, or on the next lake if you've already been through all the campgrounds on a given lake, or in the next state if you've exhausted all the lakes in a given state.
But beware, campsites are not the
only reservable features at Corps campgrounds. Make sure you're not reserving a cabin or a group shelter before you plunk down your credit card on a site.
And remember, if you're a certified geezer and you have the NPS Senior Pass, or you're handicapped and have the NPS Access Pass, do NOT pay full price when you make the reservation, just put down the minimum deposit. Because when you check in, if you show the pass you'll camp for half price. I don't THINK they did away with that for the eclipse…
Good luck, one and all!