A major problem in map making is the visual representation of relief features such as mountains, plateaus, hills and valleys. The essential difficulty is that we are accustomed to viewing these and other surface features diagrammed from above, as show n on a map, is unfamiliar to most of us.

Use the Columbia quadrangle map for the following lab which has been designed to serve as a means of acquainting you with symbolization and to provide practice in understanding current large and small scale maps.

1. SYMBOLS

a. Describe the use of each of these colors on a map.

1. Red

2. Green

3. Brown

4. Blue

5. Black

b. Try to find an example of each of the following features on the quadrangle. Draw the symbol as shown in the space provided. Use colored pencils to note the precise color used.

1. School

2. Church

3. Quarry

4. Orchard

5. Road, medium duty

6. Power Line

7. Railroad, single track

8. Intermittent Stream

2. A standard topographic quadrangle has two parts: the mapped area and the marginal information that puts the map into its spatial, temporal and jurisdictional context. Using the Columbia map, fill in the map information below.

1. Name of the quadrangle

2. Publishing Agency

3. Representative Fraction scale

4. Date of Publication

5. Date of ground survey

6. Date of Aerial survey

7. Date of Field Check

8. Date of Revision

9. Minimum Latitude

10. Minimum Longitude

11. E-W extent ( answer 9-10)

12. Map Series

13. Magnetic Declination

14. Date of Declination

15. UTM Grid Zone

16. State Coordinate Zone

17. General Location in State

18. Name of quad just to the east

19. Name of quad just to the northwest

20. Contour Interval

21. Contour Datum

22. Does this map comply with national map accuracy standards?

Note: Map standards have changed through time and therefore a given topographic map will not necessarily provide every kind of information listed here, nor will a given kind of information appear in the same place on every map.