The @USGS Streamgaging Program has been measuring our Nation’s rivers and streams since 1889. We have gone a long way from the first 27 gages installed to measure streamflow for hydropower to today’s 8,532 rural and urban gages which can measure both water quantity and quality. USGS streamgages are critical for managing streamflow, forecasting floods, operating hydropower plants, identifying safe recreation conditions, supporting infrastructure and transportation, and more. This week, we present

Live stream of ongoing eruption at Kīlauea: www.youtube.com/usgs/live This morning, December 23, at approximately 2 a.m. HST, elevated earthquake activity began at the volcano's summit. By 2:30 a.m., the USGS Hawaiian Volcano Observatory observed eruptive activity in Kīlauea summit webcam images, indicating that an eruption has commenced within Halemaʻumaʻu and the summit caldera in Hawai‘i Volcanoes National Park. Activity updates are being shared with partners and emergency management. The ong

In the air and on the ground, HVO scientists are collecting data and assessing hazards for Kīlauea's middle East Rift Zone eruption. On September 18, 2024, around 3:15 pm HST, a fourth vent system opened just west of Nāpau Crater. Lava has been flowing over the western cliffs of Nāpau Crater and onto the crater floor. The S2cam provides a view of the lava falls: https://www.usgs.gov/observatories/hvo/s2cam-view-napau-crater-east-rift-zone-kilauea-view-southwest The eruption is occurring within a