Describe the setting for this river. (What would it look like if you were standing there?)  Describe the river channel itself, including its width, apparent water depth, shape of the path it is taking, and the apparent size of the material that makes up the river bed.  Use the Ruler tool to calculate the gradient of the river at this location. Describe what happened to the stream’s slope as you moved downstream. Report the upstream elevation, downstream elevation, horizontal distance, and river gradient Zoom in at the area where the river meets the Rio Grande. Do you think this area is primarily a region of erosion, deposition, or both? Justify your answer.  Follow the river upstream for about 3.75 km until you find the place where Interstate 25 crosses the Rio Puerco. The interstate is the two dark, parallel lines, and the bridges across the river are the two light gray areas. Closely observe the bridges and the area around them. Based on your observations from this river system, why are the bridges very long when the river is very small? What evidence supports your claim?

Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
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14 : Location #3 — Rio Puerco Mouth: This is the mouth of the Rio Puerco where it joins the Rio Grande. Use Google Earth to observe the river at this location and answer the following questions.

  1. Describe the setting for this river. (What would it look like if you were standing there?) 
  2. Describe the river channel itself, including its width, apparent water depth, shape of the path it is taking, and the apparent size of the material that makes up the river bed. 
  3. Use the Ruler tool to calculate the gradient of the river at this location. Describe what happened to the stream’s slope as you moved downstream. Report the upstream elevation, downstream elevation, horizontal distance, and river gradient
  4. Zoom in at the area where the river meets the Rio Grande. Do you think this area is primarily a region of erosion, deposition, or both? Justify your answer. 
  5. Follow the river upstream for about 3.75 km until you find the place where Interstate 25 crosses the Rio Puerco. The interstate is the two dark, parallel lines, and the bridges across the river are the two light gray areas. Closely observe the bridges and the area around them. Based on your observations from this river system, why are the bridges very long when the river is very small? What evidence supports your claim? 
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