Custom Search     Square Lake     I was out bicycling this morning and discovered this state park. It is not on the official listing of Washington State Parks. The park is day use only with picnic tables and a boat launch for car-top boats. Except for one house (caretaker?) there is no development around the lake?reminds me of lakes I?ve found in the backcountry. I?ll be taking my family to this lake for canoeing and picnicking. Says Robert Bunney          Map Detailed Map Marinas Marinas on or near Square Lake Weather Local weather forecast