With the heat, more people are trying to cool off, but New Milford officials are cautioning to use only approved recreation areas of water bodies.  After years of drowning deaths and near drownings, New Milford worked with First Light to have signs put up along popular parts of the Housatonic River warning that swimming is now allowed and of the dangers of the water.  Water Witch Hose Fire Chief Richard Squires says this year, it seems the new area of interest for recreation on the river is the low head dam off West Street. He notes that a couple of years ago kayakers went over the dam in the same area.  While it looks peaceful, it's a dangerous area.  Squires says a lot of accidents have also happened up near Bulls Bridge, similarly the river looks calm on the top but poses dangers.  In the most recent recovery effort, Squires notes that the divers noticed the change in the river because of rain up north.