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Before and After Images

The USGS has science based work that often requires the comparison of two geographic areas over time. Though scientific data is critical to understanding changes over time, visually seeing those changes is a powerful tool in support of that data. 

Filter Total Items: 322
TNMCorps Mapping Challenge: City/Town Halls in NE & WY
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TNMCorps Mapping Challenge: City/Town Halls in NE & WY as of 01/07/21
TNMCorps Mapping Challenge: Schools in MO
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TNMCorps Mapping Challenge: Schools in MO as of 01/07/21
TNMCorps Mapping Challenge: Schools in TX
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TNMCorps Mapping Challenge: Schools in TX as of 01/07/21
TNMCorps Status Map: Unedited Points as of 09/30/2020
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TNMCorps Status Maps: Unedited Points between 9/30/20 and 12/1/20
Color photograph of lava lake
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Eruption continues in Halema‘uma‘u at Kīlauea's summit
Color photograph of lava lake
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Kīlauea summit changes - Dec. 25 to 27, 2020
Kīlauea summit eruption image from the KWcam webcam, taken on December 21
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KWcam images comparing first 2 weeks of Halema‘uma‘u crater eruption
Color photograph of lava lake
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Recent Changes at Kīlauea Volcano
Color photograph of lava lake
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Recent Changes at Kīlauea Volcano - Dec. 21 to Dec. 24
TNMCorps Mapping Challenge: City/Town Halls in NE & WY
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TNMCorps Mapping Challenge: City/Town Halls in NE & WY as of 12/17/20
TNMCorps Mapping Challenge: City/Town Halls in NE & WY
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TNMCorps Mapping Challenge: City/Town Halls in NE & WY as of 12/23/20
TNMCorps Mapping Challenge: Schools in MO
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TNMCorps Mapping Challenge: Schools in MO as of 12/17/20
TNMCorps Mapping Challenge: Schools in MO
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TNMCorps Mapping Challenge: Schools in MO as of 12/23/20
TNMCorps Mapping Challenge: Schools in TX
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TNMCorps Mapping Challenge: Schools in TX as of 12/17/20
TNMCorps Mapping Challenge: Schools in TX
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TNMCorps Mapping Challenge: Schools in TX as of 12/23/20
TNMCorps Mapping Challenge: City/Town Halls in NE & WY
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TNMCorps Mapping Challenge: City/Town Halls in NE & WY as of 12/10/20
TNMCorps Mapping Challenge: Schools in MO
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TNMCorps Mapping Challenge: Schools in MO as of 12/03/20
TNMCorps Mapping Challenge: Schools in MO
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TNMCorps Mapping Challenge: Schools in MO as of 12/03/20
TNMCorps Mapping Challenge: Schools in MO
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TNMCorps Mapping Challenge: Schools in MO as of 12/10/20
TNMCorps Mapping Challenge: Schools in TX
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TNMCorps Mapping Challenge: Schools in TX as of 12/03/20
TNMCorps Mapping Challenge: Schools in TX
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TNMCorps Mapping Challenge: Schools in TX as of 12/10/20