Wednesday, Sept. 13 • Ag Water Board (coordinating entity of Watershed Improvement Districts), 1796 Front St., Lynden, 1 p.m. • Meridian School Board, Meridian High School board room, 194 W. Laurel Rd., 7 p.m. • Berthusen Park Advisory Committee, southeast conference room, kitchen #2 of park, 8837 Berthusen Rd. northwest of Lynden, 7 p.m. Thursday,…