WETMAAP Skill 1
False River - Element 34

Skill 1: Map Use
Element 34: Use of Landsat 5 Satellite Thematic Mapper Image
Image

Materials:

2005 Landsat 5 Satellite Thematic Mapper Image

2004 Color Infrared (CIR) Aerial Photograph

1:24,000 scale 1962/1994 New Roads, LA / 1962/1980 Erwinville, LA, USGS Topographic Quadrangles

1:100,000 scale 1983 New Roads, LA, USGS Topographic Quadrangles

1:250,000 scale 1954/1972 Baton Rouge, LA, USGS Topographic Quadrangle

Magnifying glass

Exercises:

Part I: Spatial Recognition

1. Using the satellite images, aerial photo, and maps locate:
1. False River
2. New Roads
3. The Chenal Canal
4. Alma Planation
2. What would you suggest about the information that you are able to visualize between the various maps, the 2004 aerial photograph, and the satellite images:

• which shows the greatest detail?     ____________________________

• which shows the least detail?     ____________________________

• which shows the greatest area?     ____________________________

• which shows the smallest area?     ____________________________

• which shows the landscape in its true colors?    ____________________________

Part II:  Scale Measurement

1. Tape one of the 11" x 17" clear film overlays on top of the Landsat 5 Thematic Mapper image.

2. Use the Black pen to make four marks; one at each corner ticks of the image.

3. Using the 1:100,000 scale USGS Topographic Quadrangle and the Black pen , locate two points at least four inches apart.

   Hint:It is best to identify and use cultural features,
   but if not enough are available, use two natural feature points
   that do not appear to have changed.

4. Identify the exact same two features from the USGS Topographic Quadrangle on the 2005 Landsat 5 Satellite Image. Make a mark on the image for each location.

5. Measure the distance between the two points on the 1:100,000 scale USGS Topographic Quadrangle with the ruler.

   _________________ What is the distance in inches?

6. Measure the distance between the same two points on 2005 Landsat 5 Satellite Image the with the ruler.

   ________________ What is the distance in inches?

7. Using the calculator and "Scale Determination" section of the Reference Manual, determine the scale of the 2005 Landsat 5 Satellite Image.

   _________________ What is the scale that you calculated?

Part III:  Floodplain Feature Identification

Read the Floodplain and the Long sot survey systems sections of the False River Geographic Summary

• Use the 100,000 map to identify and locate the following features:
1. River Chanel
2. River Meander
3. Meander Cut-off
4. Point Bar
5. Oxbow Lake
6. Natural Levee
7. Long Lot Survey System
8. Areas of swamp