The USGS warned that magma was still flowing into the rift zone.
Officials said there was no release of any unsafe hydrogen sulfide gas after lava crept over the plugged wells Sunday.
Lava from Hawaii's erupting Kilauea volcano threatened to cover more wells at a geothermal power station on Monday as a fresh blast from the crater sent an ash plume nearly 15,000 feet (4,600 m) into the sky, officials said.
This animated image shows the lava flows from the Kilauea Volcano in the Leilani Estates neighborhood of Hawaii's Big Island on May 23, 2018.
The U.S. Geological Survey said sulfur dioxide emissions from the volcano have more than doubled since the current eruption began.More news: Washington Capitals' Tom Wilson defends hit on Vegas Golden Knights' Jonathan Marchessault
The lava flow, produced by Fissure 8, is advancing on Nohea and Kupono Streets north of Leilani Street. A family friend shot photos of the home as a wall of lava advanced and as fire claimed the property. She's a former smoker, "so that's probably part of the problem, " she said.
She got the call just before midnight Sunday and was able to get in this morning to watch a chapter of her life come to an end.
Retired photojournalist Chris Stewart says there's one good thing about vog: It intensifies the colors of a sunset. The infrared coloring helps to better distinguish the lava fields and areas that have been burned.
Scientists believe the volcanic activity may be a precursor to a major eruption similar to the one that shook the island in the mid-1920s.
Though lava destruction from the volcano is confined to a roughly 10-square-mile (26-sq-km) area, the eruption is hurting the island's tourist-driven economy as potential visitors fear ashfall or volcanic smog belching from Kilauea's summit. "We monitor for hydrogen sulfide and sulfur dioxide on a continuous basis".