Tag Archives: Des Moines River

Change Over Time – Flooding on the Landscape (NW Iowa)

By Education, Environmental Change, Imagery, Landsat Golden Jubilee, Observation, Remote Sensing, , , , , , , , , , , , , , , , , , , , ,

Use sliders to compare images. Today’s image shows an area in northwest Iowa between Spencer (Clay County) and Emmetsburg (Palo Alto County). The two images on the left are showing water levels in 1990 (typical year) and 2022 (recovering from a drought) compared to 1993 (heavy flooding) and 2008 (flooding). Notice the swollen streambanks and

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Traveling Way Back – Landsat Images From Aprils Gone By

By #Throwback Thursday, Education, Environmental Change, Imagery, Landsat, Landsat Golden Jubilee, Observation, Phenology, Remote Sensing, Resource, , , , , , , , , , , , , ,

Welcome to another Throwback Thursday. Today we are going back into the archives to compare imagery from the first five Landsat satellites (all images are featured in natural color). Click on each image for a closer view. Try to notice the differences in resolution and image quality between the different years. Another thing to note

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