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Maps

Our programs produce accurate geologic maps and 3-D geologic frameworks that provide critical data for sustaining and improving the quality of life and economic vitality of the Nation. They also organize, maintain, and publish the geospatial baseline of the Nation's topography, natural landscape, built environment and more.

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Surficial geology of the northern San Luis Valley, Saguache, Fremont, Custer, Alamosa, Rio Grande, Conejos, and Costilla Counties, Colorado Surficial geology of the northern San Luis Valley, Saguache, Fremont, Custer, Alamosa, Rio Grande, Conejos, and Costilla Counties, Colorado

The San Luis Valley and associated underlying basin of south-central Colorado and north-central New Mexico is the largest structural and hydrologic basin of the Rio Grande Rift and fluvial system. The surrounding San Juan and Sangre de Cristo Mountains reveal evidence of widespread volcanism and transtensional tectonism beginning in the Oligocene and continuing to the present, as seen in...

May 28, 2021—Kīlauea summit contour map May 28, 2021—Kīlauea summit contour map

May 28, 2021—Kīlauea summit contour map showing lava lake level and topographic profiles across the caldera

May 13, 2021—Rise of the Halema‘uma‘u lava lake May 13, 2021—Rise of the Halema‘uma‘u lava lake

Digital elevation models (DEMs) created from photos taken during helicopter overflights of Kīlauea summit.

May 13, 2021—Halema‘uma‘u eruption Digital Elevation Model May 13, 2021—Halema‘uma‘u eruption Digital Elevation Model

HVO uses regular Kīlauea summit helicopter overflights of Halema‘uma‘u crater to create digital elevation models (DEMs) of the crater.
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