Keller Well measurements and water sampling on December 10

On Tuesday, December 10 HVO staff visited Keller Well, a deep borehole at the summit of Kīlauea, to take quarterly measurements and samples. This photo shows an extra long measuring tape, which has a sensor attached to the end, being lowered into the well to measure the distance to the top of the water table. The depth to the water was measured at approximately 511 m (1677 ft) below the ground surface, which is nearly 20 ft (6 m) deeper than the last measurement taken on September 24. USGS photo by L. DeSmither.