As we continue moving through the series of lessons of the 2024 Earth Observation Day poster, “Earth Science Everywhere.” Today we will examine the disaster management lesson, “Exploring Disaster Management: Learning about natural hazards to prepare and prevent natural disasters”. This lesson seeks to engage students in learning about natural hazards in the environment. To
This week we are exploring urban growth in Ames, Iowa. The red areas are showing areas of vegetation that are primarily agricultural in the larger areas, the neon green areas are short grass and trees, the gray color is urban areas, and blue areas are water. As you watch the time lapse video notice several
Iowans are working to reduce emissions by moving to renewable energy sources.
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
We are continuing our celebration of the 50th year of the US Landsat satellite imagery program. This week we are heading to the lake – Clear Lake, Iowa, located in north central Iowa. Below are four images showing Summer Solstice (6/13/2019), Fall Equinox (9/17/2019), Winter Solstice (12/22/2019), and Spring Equinox (3/18/2019) from Landsat 8. The
It’s another Throwback Thursday. Saylorville Lake and Dam are located in Central Iowa northwest of Des Moines, Iowa. The Saylorville complex was built to help with flood control and as a drinking water source for surrounding communities. At normal levels, the Saylorville reservoir stores 21.1 billion gallons of water with capacity at flood levels to
Six additional counties in western Iowa have been added to the 2020 LiDAR service: https://arcg.is/15eHuH0
Today’s time lapse video is highlighting the damming of Brushy Creek and the creation of 690-acre Brushy Creek Lake, Iowa’s deepest artificial lake. Watch the dam development begin around 1994 and then the lake begin to fill around 1998. The Brushy Creek State Recreation Area is a 6500-acre park located in north central Iowa. To
What changes do you notice in this Landsat time lapse video? 1) The areas of purple and white in the image are urban areas. Throughout the video they fill in the area from the bottom to the center. The pink areas are farm land. 2) Did you notice the increase in the number of retention
Eight more counties in southwest Iowa have been added to the 2020 LiDAR services: https://arcg.is/1PfriS