The Delta Region Areawide Aquatic Weed Project (DRAAWP) was represented by two presentations to the 15^th International Symposium of Aquatic Plants, held February 18-23 2018 in Queenstown, New Zealand. “Quantitative techniques for assessing changes in distribution and abundance of aquatic plants after management” was presented by John Madsen, and “Improving aquatic plant management in the California Sacramento-San Joaquin Delta” by David Bubenheim. These two presentations were among the 75 presentations and dozen posters during the Symposium, held every three years. Presenters from Europe, Asia, North America, Australia, and New Zealand presented research on aquatic plant biology, ecology, and management. The next symposium is planned for Denmark in 2020. More details on the 15^th International Symposium on Aquatic Plants can be found at http://www.aquaticplants2018.co.nz/.