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  Button that takes you to the glossary page. Button that takes you to the related links page. Button that takes you to the references page. Button that takes you to the Problem Based Learning model page. Button that takes you to the modules and activities page. Button that takes you to the teacher pages. Button that takes you back to the main page.Image map of some Water Quality puzzle pieces. Please have someone assist you with this.

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Image that says Remote Sensing.
Button that takes you to the Environmental History page.		 Remote Sensing
 Image showing an infrared aerial photo of downtown Wheeling, the Ohio River, and lower Wheeling Creek as they appeared in 1991. This image links to a more detailed image.A high-level aerial photograph can provide an overview of relatively large areas. The infrared aerial photo of downtown Wheeling shows the Ohio River and lower Wheeling Creek as they appeared in 1991. Can you see the coal barge moving up the river past the railroad bridge? That bridge is no longer there. Compare a closer view of the six sites with the color photograph and topographic map below. Left: High-level aerial photograph over Wheeling, WV. Photo: Courtesy of Dr. Ben Stout

Image of lower Wheeling Creek Site F. This image links to a more detailed image.Low-level aerial photographs are particularly useful for identifying features near sampling sites. Local features, as well as the distance from the Ohio River, may have an impact on the site's water quality. Photo: Courtesy of Dr. Ben Stout

Image of a topographic map. This image links to a more detailed image.A topographic map can help to locate features near stream sites and to document the location of stream sites for future reference. In addition, it can provide measures for identifying stream gradient, stream order, distance from the mouth, distance to the headwaters, watershed area, and amount of forested land. Topographic maps are available from the U.S. Geological Survey. Photo: Courtesy of Dr. Ben Stout

Compare information provided by the three types of images. Which image is best? Do all contribute useful information?

Sites:

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B

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D

E

F
Distance from the Ohio River 12.0 km 10.6 km   7.4 km 6.2 km 5.4 km 2.6 km

Consider these questions: What are some of the differences that occur at sites 2.6, 5.4, 6.2, 7.4, 10.6, and 12.0 km (1.6, 3.6, 3.9, 4.6, 6.6, 7.5, mi., respectively) upstream of the Ohio River. Compare the forest canopy, distance from the stream to nearby roads and buildings, and amount of "green space" around the streams in each photograph. How do these visual attributes compare with the biological community data presented in Scenario #1?

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