Saskatchewan Landing
This is only 45 minutes North of Swift Current, so it's incredibly convenient. The sites are a bit more open and "built" than some parks, but that is the idea. It is decently treed and you can literally throw a rock from your site to the South Saskatchewan River which has some spectacular fresh water sport fishing. Walley, Pike, Trout, Whitefish, Sturgeon, Sauger, Catfish... list goes on. There are two main beaches (campground beach and the main beach) which are clean and have a well treed, well shaded "upper deck" for mom and dad to sit at and to enjoy picnics etc. There are a couple little stores in the park as well. Just north of the Landing is the Clearwater Drive In (those are RARE these days) and it's about a 20 minute drive to go enjoy a drive in movie in the evening.
We turned these three beasts into some seriously delicious smoked fish... did I mention the fishing was off the chain? Caught these three slough sharks in a little inlet with 5 feet of water just with a simple shore cast rubber lure in the early morning. They love to come into the mouth of the inlet in the morning to warm up and snipe the little 1st years for a quick snack. Most people turn their nose up at these guys, but if you prep them right, they are a spectacular meal! At night, the walley fishing off shore is awesome since the medium size and big ones like to move into shore to eat.