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Mapping Arundo donax (Arundo cane) with multispectral imagery before, during, and after herbicide treatment along the Rio Grande in Webb County, Texas, 2020–21 Mapping Arundo donax (Arundo cane) with multispectral imagery before, during, and after herbicide treatment along the Rio Grande in Webb County, Texas, 2020–21
Arundo donax, commonly called Arundo cane, giant reed, or Carrizo cane, is an invasive bamboo-like perennial grass common in riparian areas throughout the southwestern United States. In Texas, not only does it negatively affect riparian ecosystems, but it has also become a problem for border security because it reduces visibility along the Rio Grande. To address these problems, in 2015...
January 8, 2024—Summary map of recent unrest at Kīlauea Volcano January 8, 2024—Summary map of recent unrest at Kīlauea Volcano
This map shows recent unrest at Kīlauea volcano. Yellow circles mark earthquake locations from November 30, 2023 through January 8, 2024, as recorded by HVO seismometers
December 12, 2023—Summary map of unrest at Kīlauea Volcano December 12, 2023—Summary map of unrest at Kīlauea Volcano
This map shows recent unrest at Kīlauea volcano.
Surficial geologic map of the Owlshead Mountains 30' x 60' quadrangle, Inyo and San Bernardino Counties, California Surficial geologic map of the Owlshead Mountains 30' x 60' quadrangle, Inyo and San Bernardino Counties, California
The surficial geologic map of the Owlshead Mountains 30' x 60' quadrangle depicts the distribution and characteristics of surficial-deposit materials and neotectonic deformation for an area of approximately 5,000 square kilometers (km2) located in the western Basin and Range Province of eastern California. The map represents a new compilation of the surficial geology that encompasses...
Geologic framework and hydrostratigraphy of the Edwards and Trinity aquifers within northern Bexar and Comal Counties, Texas Geologic framework and hydrostratigraphy of the Edwards and Trinity aquifers within northern Bexar and Comal Counties, Texas
During 2020–22, the U.S. Geological Survey, in cooperation with the Edwards Aquifer Authority, revised a previous publication that described the geologic framework and hydrostratigraphy of the Edwards and Trinity aquifers within northern Bexar and Comal Counties, Texas. This report presents the refined maps and descriptions of geologic framework and hydrostratigraphy of the Edwards and...
November 5, 2023—Summary map of intrusive activity at Kīlauea Volcano November 5, 2023—Summary map of intrusive activity at Kīlauea Volcano
This map shows recent unrest at Kīlauea's summit and Southwest Rift Zone.
Stratigraphic Cross Sections of the Lewis Shale in the Eastern Part of the Southwestern Wyoming Province, Wyoming and Colorado Stratigraphic Cross Sections of the Lewis Shale in the Eastern Part of the Southwestern Wyoming Province, Wyoming and Colorado
Three stratigraphic cross sections A–A', B–B', and C–C' were created for the Lewis Shale and associated strata in the eastern part of the Southwestern Wyoming Province of Wyoming and Colorado. The cross sections highlight 15 clinothems within the Lewis Shale, Fox Hills Sandstone, and Lance Formation progradational system (also referred to as the Lewis Shale system). Additionally, the...
October 24, 2023—Summary map of intrusive activity at Kīlauea Volcano October 24, 2023—Summary map of intrusive activity at Kīlauea Volcano
This map shows recent unrest at Kīlauea summit.
October 24, 2023 — Reference map of September 2023 Kīlauea summit eruption October 24, 2023 — Reference map of September 2023 Kīlauea summit eruption
This reference map depicts the Kīlauea summit region following the most recent eruption in September 2023.
October 12, 2023—Summary map of intrusive activity at Kīlauea Volcano October 12, 2023—Summary map of intrusive activity at Kīlauea Volcano
This map shows recent unrest in Kīlauea’s summit region. Colored fringes denote areas of ground deformation and yellow circles denote earthquake locations.
Groundwater potentiometric-surface altitude in 2022 and groundwater-level changes between 1968, 1991, and 2022, in the alluvial aquifer in the Big Lost River Valley, south-central Idaho Groundwater potentiometric-surface altitude in 2022 and groundwater-level changes between 1968, 1991, and 2022, in the alluvial aquifer in the Big Lost River Valley, south-central Idaho
The U.S. Geological Survey and the Idaho Department of Water Resources measured groundwater levels during spring 2022 and autumn 2022 to create detailed potentiometric-surface maps for the alluvial aquifer in the Big Lost River Valley in south-central Idaho. Wells were assigned to shallow, intermediate, and deep water-bearing units based on well depth, groundwater potentiometric-surface...
September 15, 2023 — Kīlauea summit thermal map compilation September 15, 2023 — Kīlauea summit thermal map compilation
This compilation shows thermal maps of the summit eruption for Sept. 11-15, 2023.