Construction of a Topographic Map and Topographic Profile

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Figure 7-8 contains the basic elements of a topographic map: scale, reference, elevations, and drainage network. Use the following instructions to complete the topographic map and topogrpahic profile. After completing the map and profile, answer the questions that follow.

1. Construct a topographic map with a contour interval of 20' using the elevations and stream pattern. You should first attempt to construct the map by lightly drawing the contour lines in pencil. Once you are satisfied with the map, darken the lines with pencil or ink. You will need to interpolate contours between known elevations.

2. Construct a topographic profile along the line connecting "X" and "Y". Use the ruled grid below the map for this purpose.

Questions 3, 4 and 5 refer to the topographic profile.

3a Horizontal Scale 1 inch =...

3b Horiz Scale as a Ratio 1:...

4a Vertical Scale 1 inch =.....

4b Vert Scale as a Ratio 1:....

5 Vert Exaggeration in feet....

Questions 6,7,8 and 9 refer to the topographic map.

6. Show with an arrow the direction of flow of Six-Shooter Creek. The gradient of the creek,

in feet per mile, is...........

7 Max relief in feet is........

8. Using the Township and Range System, locate point "A" (e.g. SE 1/4 of the SE 1/4 of section 1, T1, R1).

Township and Range.............

9. Using the Latitude and Longitude System, locate point "B" to the nearest minute (e.g. 1 degree, 1' W. Longitude; 1degree, 1' N. Latitude).

Latitude and Longitude.........