WETMAAP
Skill 1
Fort Clatsop: Element 24
Skill
1: Map Use
Element
24: Comparison of Current Maps and Images and Lewis and Clark Historical Map
Materials:
2001 Black and White Landsat 7 Thematic Mapper (TM) Satellite Image
1805-06 Lewis and Clark Historical Map
1:100,000
scale Fort Clatsop Topographic Quadrangle
Black
ultra-fine permanent marking pen
magnifying
glass
Exercise:
1. On the Lewis and Clark historical map,
locate:
a. What is now called the Lewis and Clark River.
b. What is now called the Youngs River
c. What Lewis and Clark called Point William.
d. Seven encampments.
e. Fort Clatsop.
2.
Using the Lewis and Clark historical
map, the 1:100,000 scale Fort Clatsop Topographic Quadrangle, and the 2001 Black
and White Landsat 7 TM satellite image locate and label each feature and/or
location on the Black and White image with the black ultra-fine permanent
marking pen.
a. the
Lewis and Clark River
b. the
Youngs River
c. seven
encampments
d. Fort
Clatsop
3. Compare the Lewis and Clark historical
map, the 1:100,000 Fort Clatsop Topographic Quadrangle and the Natural Color
Landsat 7 TM satellite image. List
three natural features that have changed since 1805/06.
a. ___________________________________
b. ___________________________________
c. ___________________________________
4.
How descriptive was Clark’s
cartography?
____________________________________________________________
____________________________________________________________
5.
How accurate was Clark’s cartography?
____________________________________________________________
____________________________________________________________