Sweet Arrow Lake Country Park in Pine Grove will host a creek study of Upper Little Swatara Creek from 10 a.m. to 11

a.m.July 9.Along with "Porcupine Pat" McKinney, participants will search for mayflies, crayfish, water pennies and more.Meet in the Waterfall Road parking lot. Free and open to the public, it is recommended for ages 6 and older. All equipment is provided.