1. Senior Stormwater Research Engineer, Dept. of Public Works, City of Roanoke, Virginia, 1802 Courtland Rd. NE, Roanoke, VA 24012 (corresponding author).
2. Professor, Via Dept. of Civil and Environmental Engineering, Virginia Tech, 200 Patton Hall, Blacksburg, VA 24061.
3. GIS Specialist, Dept. of Public Works, City of Roanoke, Virginia, 1802 Courtland Rd. NE, Roanoke, VA 24012.