Potomac ES www.montgomeryschoolsmd.org/schools/potomaces/ 10311 River Road Potomac, MD 20854 39.0216109962922 -77.21330524801996 Potomac ES10311 River RoadPotomac,MD 20854 Bus Routes Phone: 240-740-4360 Fax: 301-765-8955 Dr. Catherine R. Allie, Principal Elementary Staff Directory