Mark your calendars: The 58th annual California Groundwater Association Convention and Trade Show takes place Nov. 2-4.

Mark your calendars: The 58th annual California Groundwater Association (CGA) Convention and Trade Show will be held Nov. 2-4 at the MontBleu Resort Casino & Spa in Lake Tahoe, Nev. Attendees can look forward to a full slate of seminars and activities over the three-day event. For additional information, visit www.groundh2o.org.