Oct. 18, 10:30 a.m., Claremont Library, 208 N. Harvard Ave.: The Claremont Library presents Mark von Wodtke, who will speak about issues such as managing the Wilderness Park to capture and retain runoff, drought protection and the increasing intensity of rain storms, using emergency water infrastructure to fight fires and water trees during extreme drought, and more, according to the library and the Claremont Wildlands Conservancy. For more information, visit www.claremontwildlands.org or email info@ claremontwildlands.org.