Do you have a day use area for swimming and if so does that area have picnic tables with grills? And are they covered?

Yes..nice areas

You have to txt a number from a sign to stay at Murray lake and pay thru the text, yes to table's , yes to grills.

There are several areas only for day use around the lake most have picnic tables and swimming

Yes yes and some are covered

They have like 2 areas for swimming. They do have grills and picnic areas. But not covered. They also have a $10 parking fee. So be mindful of that. Honestly, the Sulphur is right down the road and it's free to park with lots of tables and grills.