WETMAAP Technique 2   
Fort Clatsop: Element 1 

Materials:

1:24,000 scale Warrenton-Astoria Topographic Quadrangle
(3) 11"x 17" clear film overlays
drafting tape
Colored marker pens: Blue, Red, Black

                        Exercise:         

           1. Use 1:24,000 scale Warrenton-Astoria Topographic Quadrangle

          2. Use a clear film 11”x 17”overlay.

                      3. Tape the clear film overlay on top of the 1:24,000 scale map.  Tape at the top edge.

          4. Use the Blue pen.

    5. Use the Blue pen to make four “corner marks” (tick mark 2) on the overlay, one at each corner of the study site.

          6. Trace the edges of marsh in Blue on the overlay.

          7. At the bottom of the overlay (in blue) draw a short horizontal line and label beside it “Marsh.”

                         Hint: Use of a symbol with a short description beside it is a “key,” or means of identifying selected features.

          8. Remove the “marsh” overlay.

          9. Use a second 11"x 17”clear film overlay.

        10. Tape the clear film overlay on top of 1:24,000 scale map. Tape at top edge.

                    11.  Use the Black pen.

  12. Use the Black pen to make four  “corner marks” (tick mark) on the overlay, one at each corner of the study site.

        13. Trace the primary roads in Black on the overlay.

  14. At the bottom (in black) draw a short horizontal line the same length as the Blue line and label it  “Roads.”  

  15. Remove the “Roads” overlay.

                    16. Use the third 11" x 17” clear film overlay.

        17. Tape the clear film overlay on top of the 1:24,000 scale map. Tape the top edge.

                    18. Use the Red pen.                       

  19.     Use the Red pen to make four  “corner marks” (tick mark 2) on the overlay, one at each corner of the study site.     

  20. Trace the boundary of the Fort Clatsop National Memorial in Red on the overlay.

  21. At the bottom (in red) make a dashed line and label it  “Fort Clatsop.”  Do not remove this overlay.

                              Hint: Combining several single “key” items creates a “legend.” Every map should have a legend

        22. Tape the “Marsh” and  “Roads” overlays one on top of each other, over the “Fort Clatsop” overlay.  Use the four corner marks to line-up (“register”) the overlays on top of each other.