USGS

@USGS • 769,037 subscribers

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Shorts

What can four decades of land cover data reveal? A changing landscape. The latest release of the Annual National Land Cover Database (NLCD) extends annual mapping through 2025, providing a longer view of how landscapes across the United States have changed over time. One example is the Great Salt Lake in Utah. In the mid-1980s, the lake’s water levels reached historic highs. Since then, water levels have fluctuated over the years but have declined overall. Built from Landsat imagery, Annual NLCD maps land cover across the United States each year, helping researchers, government agencies, businesses, and communities better understand how landscapes are changing. Learn more about the latest Annual NLCD release, including how to access and download the data: 👉 🎥: Animation showing Annual NLCD maps of the Great Salt Lake area in Utah (1985 to 2025). Darker blue represents open water, while lighter blues represent wetlands. Shades of green signify various types of forests. Shades of red represent developed areas, including cities and roads, with darker shades indicating more intense development. Light tan is grassland; darker tan is shrub/scrub land cover; yellow is pasture/hay; and brown is cropland. Gray is barren land.

What can four decades of land cover data reveal? A changing landscape. The latest release of the Annual National Land Cover Database (NLCD) extends annual mapping through 2025, providing a longer view of how landscapes across the United States have changed over time. One example is the Great Salt Lake in Utah. In the mid-1980s, the lake’s water levels reached historic highs. Since then, water levels have fluctuated over the years but have declined overall. Built from Landsat imagery, Annual NLCD maps land cover across the United States each year, helping researchers, government agencies, businesses, and communities better understand how landscapes are changing. Learn more about the latest Annual NLCD release, including how to access and download the data: 👉 🎥: Animation showing Annual NLCD maps of the Great Salt Lake area in Utah (1985 to 2025). Darker blue represents open water, while lighter blues represent wetlands. Shades of green signify various types of forests. Shades of red represent developed areas, including cities and roads, with darker shades indicating more intense development. Light tan is grassland; darker tan is shrub/scrub land cover; yellow is pasture/hay; and brown is cropland. Gray is barren land.

33,859 views

🗺️ Just released: A New Cooperative National Geologic Map for the Nation - This new map gives a unified, detailed look at the geology of the contiguous U.S., compiled from decades of work by state and federal surveys. Learn more:

🗺️ Just released: A New Cooperative National Geologic Map for the Nation - This new map gives a unified, detailed look at the geology of the contiguous U.S., compiled from decades of work by state and federal surveys. Learn more:

60,370 views

On December 26, 2004, the 9.1 magnitude Sumatra-Andaman earthquake triggered tsunamis, killing over 230,000. In its wake, global monitoring transformed with better data sharing, 24/7 tracking, and improved tsunami warnings, revolutionizing how we respond to such disasters.

On December 26, 2004, the 9.1 magnitude Sumatra-Andaman earthquake triggered tsunamis, killing over 230,000. In its wake, global monitoring transformed with better data sharing, 24/7 tracking, and improved tsunami warnings, revolutionizing how we respond to such disasters.

12,353 views

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The Moon, revealed through its geology. 🌗 Explore the Unified Geologic Map of the Moon! Created by USGS Astrogeology, in collaboration with NASA and other partners, this first-ever comprehensive map reveals the Moon’s entire surface geology, combining Apollo-era data with recent satellite missions. It not only shows the 4.5-billion-year history of our lunar neighbor, but also serves as a key tool for future human missions and an invaluable resource for scientists, educators, and space enthusiasts. Download the full map and legend 👉 📹: This animation shows a rotating globe of the Unified Geologic Map of the Moon with shaded topography from the Lunar Orbiter Laser Altimeter (LOLA). Credit: NASA/GSFC/USGS. #NASA #Moon #GeologicMap

The Moon, revealed through its geology. 🌗 Explore the Unified Geologic Map of the Moon! Created by USGS Astrogeology, in collaboration with NASA and other partners, this first-ever comprehensive map reveals the Moon’s entire surface geology, combining Apollo-era data with recent satellite missions. It not only shows the 4.5-billion-year history of our lunar neighbor, but also serves as a key tool for future human missions and an invaluable resource for scientists, educators, and space enthusiasts. Download the full map and legend 👉 📹: This animation shows a rotating globe of the Unified Geologic Map of the Moon with shaded topography from the Lunar Orbiter Laser Altimeter (LOLA). Credit: NASA/GSFC/USGS. #NASA #Moon #GeologicMap

134,063 views • 3 months ago

Today marks the 30th anniversary of the Northridge earthquake, which jolted the greater LA area awake at 4:31am on 17 January 1994. Read about the tools we have gained since then:

Today marks the 30th anniversary of the Northridge earthquake, which jolted the greater LA area awake at 4:31am on 17 January 1994. Read about the tools we have gained since then:

205,098 views • 2 years ago

May 18 is the anniversary of the 1980 Mount St. Helens eruption that changed how we view volcanoes. Read more about the ways Mount St. Helens changed our world. Gifford Pinchot National Forest MtStHelensInstitute #VolcanoAwarenessMonth

May 18 is the anniversary of the 1980 Mount St. Helens eruption that changed how we view volcanoes. Read more about the ways Mount St. Helens changed our world. Gifford Pinchot National Forest MtStHelensInstitute #VolcanoAwarenessMonth

105,490 views • 3 years ago

Every day is #EarthDay at the USGS! Our thousands of scientists study all aspects of our planet, from the tops of volcanoes down to the sea floor. Stay tuned all month as we introduce you to just some of our amazing scientists, our #ClimateChampions.

Every day is #EarthDay at the USGS! Our thousands of scientists study all aspects of our planet, from the tops of volcanoes down to the sea floor. Stay tuned all month as we introduce you to just some of our amazing scientists, our #ClimateChampions.

50,165 views • 3 years ago

Minerals power modern life—and they’re not just on land. The U.S. has more ocean territory than land, and holds vast, untapped mineral resources. The USGS leads national efforts to map these mineral resources. Dive deeper 👉 #energy #minerals #seafloor

Minerals power modern life—and they’re not just on land. The U.S. has more ocean territory than land, and holds vast, untapped mineral resources. The USGS leads national efforts to map these mineral resources. Dive deeper 👉 #energy #minerals #seafloor

19,869 views • 1 year ago

The #GreatShakeOut is 10/17 at 10:17am (local time). We never know where or when an #earthquake may strike, but preparing is easier than assembling a piece of Scandinavian furniture. Here’s how… Sign up today! #BePrepared FEMA ShakeOut

The #GreatShakeOut is 10/17 at 10:17am (local time). We never know where or when an #earthquake may strike, but preparing is easier than assembling a piece of Scandinavian furniture. Here’s how… Sign up today! #BePrepared FEMA ShakeOut

22,355 views • 1 year ago

Columbia Glacier in southern Alaska has retreated 20 km (12 miles) and lost over half its volume since the 1980s. One of the fastest retreating glaciers globally, its drastic change is captured by NASA & USGS Landsat satellites. See more: #SnowyScience

Columbia Glacier in southern Alaska has retreated 20 km (12 miles) and lost over half its volume since the 1980s. One of the fastest retreating glaciers globally, its drastic change is captured by NASA & USGS Landsat satellites. See more: #SnowyScience

14,127 views • 1 year ago

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