WETMAAP Technique 2
Golden Meadows Element 1

Technique 2:       Manual GIS

Element 1:           Making Feature Overlays

 Materials:

1994  1:24,000 scale Golden Meadow/Golden Meadow Farms/Bay Courant/Mink Bay Topographic Quadrangle

            (3) 11"x 17" clear film overlay

            drafting tape

            Colored marker pens: Blue, Red, Black

Exercise:

1.    Use 1:24,000 scale Golden Meadow/Golden Meadow Farms/Bay Courant/Mink Bay 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 shorelines of Bayou LaFourche in Blue on the overlay.

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

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

          8.     Remove the "Bayou LaFourche" 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 Red pen.

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

        13.     Trace the primary and secondary roads in Red on the overlay.

  14.     At the bottom (in red) 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 Black pen.                       

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

  20.     Using a dashed line (---), outline the hurricane protection levee in Black on the overlay.

  21.     At the bottom (in black) make a dashed line and label it  “Hurricane Levee.”  Do not remove this overlay.

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

        22.     Tape the “Bayou La Fourche” and  “Roads” overlays one on top of each other, over the “Hurricane Levee” overlay.  Use the four corner marks to line-up (“register”) the overlays on top of each other.  

Hint:     Tape one overlay at the bottom edge and the other overlay at the left or right edge. By attaching the overlays at opposite edges, you can flip the overlays up and down in various alignments.  You have created a manual GIS.