All Maps

This thermal map of the summit of Kīlauea was constructed from images collected during a morning overflight on September 16, 2026. The map shows two small but active flows in the northwest portion of Halema‘uma‘u crater, erupting from new vents that opened in the past two days.

This reference map depicts new eruptive vents and lava flows in Halema‘uma‘u crater at the summit of Kīlauea since September 14, 2026.

This reference map depicts the Kīlauea summit eruption within Halema‘uma‘u crater that began on December 23, 2024. Most of the data for this map were collected during a USGS Hawaiian Volcano Observatory helicopter overflight on August 28, 2026, so the provided statistics are reflective of the entire eruption through episode 54 on August 25.

This map depicts cumulative tephra thicknesses for the Kīlauea summit eruption in areas southwest of the Halema‘uma‘u eruptive vents as of July 29, 2026.

Potentiometric-surface and depth-to-water maps for spring 2024 were created for the Mississippi River Valley alluvial aquifer using groundwater-altitude data from 1,151 wells completed in the Mississippi River Valley alluvial aquifer and from the altitude of the top of the water surface in area rivers from 160 U.S. Geological Survey and U.S. Army Corps of Engineers streamgages. The...

In 2023, the U.S. Geological Survey (USGS) completed a 3-week field operation in Lake Chelan, Washington, the third deepest lake in the conterminous United States, to acquire sediment cores, high-resolution bathymetry data, and chirp sub-bottom profiles. The high-resolution bathymetry displayed in this map publication was collected using a Norbit Winghead i67-curved array multibeam...

Surficial geologic mapping in Nebraska has been conducted primarily at the 1:24,000 scale since the mid-1990s, although there have also been limited efforts to map generalized Quaternary and surficial geology within the state and the region. We compiled and evaluated disparate maps (1:24,000–1:1,000,000) and datasets—including geologic, soil and soil parent material, and geomorphic maps...

This thermal map shows the summit of Kīlauea hours after the end of episode 52 lava fountaining on July 29, 2026. The lava flow produced by this fountain mainly flowed along the southern perimeter of the crater floor, and was stalled by the time of the overflight. However, several small breakouts were still active in several areas.

This report presents a comprehensive set of prospectivity maps for lithium in brines located within the playas of the Basin and Range Province of western United States. The prospectivity assessment is based on criteria established in the descriptive deposit model outlined in a previous U.S. Geological Survey report, with a focus on regional remote sensing methodologies. The playas within...

During 2023, the U.S. Geological Survey, in cooperation with the Edwards Aquifer Authority, revised an initial characterization completed during 2015–16 of the geologic framework, hydrostratigraphy, and ichnology of the Edwards and Trinity aquifers in the Blanco, Payton, and Rough Hollow 7.5-minute quadrangles in Blanco, Comal, Hays, and Kendall Counties, Texas. The purpose of this...

This reference map depicts the Kīlauea summit eruption within Halema‘uma‘u crater that began on December 23, 2024. Most of the data for this map were collected during a USGS Hawaiian Volcano Observatory helicopter overflight on June 30, 2026, so the provided statistics are reflective of the entire eruption through episode 50 on June 27.

This map shows thickness values for lava flows within Halema‘uma‘u crater from the Kīlauea summit eruption that began on December 23, 2024.