Flandreau Municipal Park

We had a wonderful stay in this little town park! Very well maintained town park with tons of community pride. There were cement pads with 50 amp electric and water hook ups. Dump station available across from the bathrooms/showers. Private one room showers were clean with hot water! Bathrooms were also very clean. Back in spots face the beautiful river that meanders through the park.
AT&T LTE 2-3 bars—worked well.

We came to this park on a windy day, there were only 2 campers 1 was just parked there, the other looks like someone that lives there. The 1st night we ended up staying at the casino nearby just for safety as there were pretty bad winds and a warning from the local police of potential hail.
When we came back next day we stayed in the parking lot as there were some work being done in the sites. The spots now have 50amps, with great water no bad taste or smells.
It's very small so I won't recommend it for big rigs, there are some spots that may fit for a 40' but on grass only and all back ins. Except for tent camping which has no hookups and you can just pull in unmarked grass area. Patrolled by police and some neighbors that seem to like to make the loop in the campground during the day.

The best thing: tons of Monarch butterflies (seems like the go through the area during this time late September) close to Pipestone Monument, within a short 25 cool drive.
The bad: no Verizon signal (it was shutting on and off our MiFi we don't have booster so cannot say if that can help) and our T-mobile used all the roaming in few hours with AT&T which seems to have the best coverage there. The park has wifi but is not very strong.
Weird: they have a dump station which is in an awkward position, (at least for us) we have to turn around as the dump is on the right side of the road going out.
Overall our stay for 3 nights there was good. If we are ever back in the area we'll probably stop by.