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Maps of the Arctic Alaska boundary area as defined by the U.S. Arctic Research and Policy Act—Including geospatial characteristics of select marine and terrestrial features

This pamphlet presents a series of general reference maps showing relevant geospatial features of the U.S. Arctic boundary as defined by the U.S. Congress since 1984. The first generation of the U.S. Arctic Research and Policy Act (ARPA) boundary maps was originally formatted and published in 2009 by a private firm contracted with the National Science Foundation and the U.S. Arctic Research Commis

November 19, 2021—Kīlauea summit eruption reference map

This reference map depicts the ongoing Kīlauea summit eruption on November 19, 2021.

November 16, 2021—Kīlauea summit thermal maps

This reference map depicts the ongoing Kīlauea summit eruption on November 16, 2021.

November 11, 2021—Kīlauea summit eruption reference map

This reference map depicts the ongoing Kīlauea summit eruption on November 11, 2021.

November 9, 2021—Kīlauea summit thermal maps

This reference map depicts the ongoing Kīlauea summit eruption on November 9, 2021.

November 4, 2021—Kīlauea summit eruption reference map

This reference map depicts the ongoing Kīlauea summit eruption on November 4, 2021.

Geologic map of the State of Hawaii

This geologic map and its digital databases present the geology of the eight major islands of the State of Hawaiʻi. The map should serve as a useful guide to anyone studying the geologic setting and history of Hawai‘i, including ground- and surface-water resources, economic deposits, and landslide or volcanic hazards. Its presentation in digital format allows the rapid application of geologic know

Elevation and elevation-change maps of Fountain Creek, southeastern Colorado, 2015-20

The U.S. Geological Survey, in cooperation with Colorado Springs Utilities, has collected topographic data annually since 2012 at 10 study areas along Fountain Creek, southeastern Colorado. The 10 study areas were located between Colorado Springs and the terminus of Fountain Creek at the Arkansas River in Pueblo. The purpose of this report is to present elevation maps based on topographic surveys

October 20, 2021—Kīlauea summit eruption reference map

This reference map depicts the ongoing Kīlauea summit eruption as of October 20, 2021.

October 15, 2021—Kīlauea summit eruption thermal maps

A helicopter overflight on October 15, 2021, at approximately 7:30 a.m. HST allowed for aerial visual and thermal imagery to be collected of Halema‘uma‘u crater at the summit of Kīlauea.

October 14, 2021—Kīlauea summit eruption reference map

This reference map depicts the ongoing Kīlauea summit eruption as of October 14, 2021.

October 8, 2021 — Kīlauea, Halema‘uma‘u Lava Lake Growth

The surface area of the Halema‘uma‘u lava lake at the summit of Kīlauea is now 553,000 square meters, or 157 acres.