Locals interested in making a difference in their communities may wish to attend an upcoming event designed to share ways to inspire and educate youth about the San Dieguito Watershed. The San Dieguito River Valley Conservancy will hold the free volunteer training day, Saturday, March 2 from 9:30 a.m. to 10:30 a.m. at the Del Mar Branch Library, 1309 Camino Del Mar, 92014. Such topics as water-quality testing, animal tracking and student/trail safety are on the agenda. The non-profit SDRVC preserves and protects resources of the San Dieguito River Valley through collaborative efforts to acquire lands, complete trails, restore habitats, establish educational programs, create interpretive centers, encourage recreation and mobilize public support.