K., hello! I'm fairly new from TX myself, only been here for a year. But my kids just love going to Tolmie State Park. They have a blast splashing in the water and looking for sea creatures. I'm not sure, haven't been there, but American Lake on base has a swimming area, I'm told. Another place we go is on base the McVeigh Fitness Center. They have an indoor pool with a slide for the bigger children. Not too busy usually. Hope this helps and Welcome to Lacey!