Sampling Keller Well in Kīlauea’s south caldera region

On Tuesday, August 31, Hawaiian Volcano Observatory (HVO) scientists and technicians visited the Keller Well in Kīlauea's south caldera region. Water from the well is typically sampled and analyzed quarterly to monitor how magma supply to Kīlauea's summit reservoirs might impact regional ground water. HVO scientists conducted an additional sampling mission due to the recent intrusion southwest of Kīlauea's summit caldera. In this photo, water collected from the well is emptied from the narrow pipe collector into a sample bottle. For more information on Keller Well monitoring, please see HVO's Dec. 20, 2018, "Volcano Watch" article: Volcano Watch — A Field Trip to the Mountain of Water (usgs.gov). USGS photo by P. Nadeau.