1. Washburne/Rupprecht HWR203The University of Arizona What clues do we have to guide us besides riverbeds?

2. Washburne/Rupprecht HWR203The University of Arizona Contour Lines - Hill

3. Washburne/Rupprecht HWR203The University of Arizona Contour Lines - Valley

4. Washburne/Rupprecht HWR203The University of Arizona 1) Identify outlet/gauge point Maps: ©2000 by Stephen J. Reynolds and Julia K. Johnson; Web: geology.asu.edu/~reynolds/

5. Washburne/Rupprecht HWR203The University of Arizona 2) Identify river valleys - lows “V”’s pointing up hill river

6. Washburne/Rupprecht HWR203The University of Arizona 3) Identify drainage divide - highs “V”’s pointing down hill Drainage divide

7. Washburne/Rupprecht HWR203The University of Arizona 4) Identify lower tributaries “V”’s pointing up hill river

8. Washburne/Rupprecht HWR203The University of Arizona 5) Continue tracing drainage divide “V”’s pointing down hill Drainage divide

9. Washburne/Rupprecht HWR203The University of Arizona 6) Move downhill from ridge to gauge “V”’s pointing down hill Drainage divide

10. Washburne/Rupprecht HWR203The University of Arizona Outlining Watersheds - Summary Identify gauge point – lowest area Identify river valleys – low areas Identify drainage divides lines – high areas Identify lower tributaries for clarification Continue tracing drainage divide Move downhill from ridge to gauge Watershed boundaries will only cross the stream at one point (lowest elevation)

11. Washburne/Rupprecht HWR203The University of Arizona Watershed Example 1 Maps: ©2000 by Stephen J. Reynolds and Julia K. Johnson; Web: geology.asu.edu/~reynolds/

12. Washburne/Rupprecht HWR203The University of Arizona Watershed Example 1 Maps: ©2000 by Stephen J. Reynolds and Julia K. Johnson; Web: geology.asu.edu/~reynolds/

13. Washburne/Rupprecht HWR203The University of Arizona Watershed Example 1 Maps: ©2000 by Stephen J. Reynolds and Julia K. Johnson; Web: geology.asu.edu/~reynolds/

14. Washburne/Rupprecht HWR203The University of Arizona Watershed Example 1 Maps: ©2000 by Stephen J. Reynolds and Julia K. Johnson; Web: geology.asu.edu/~reynolds/

15. Washburne/Rupprecht HWR203The University of Arizona Watershed Example 1 Maps: ©2000 by Stephen J. Reynolds and Julia K. Johnson; Web: geology.asu.edu/~reynolds/

16. Washburne/Rupprecht HWR203The University of Arizona Watershed Example 1 Maps: ©2000 by Stephen J. Reynolds and Julia K. Johnson; Web: geology.asu.edu/~reynolds/

17. Washburne/Rupprecht HWR203The University of Arizona Example 2

18. Washburne/Rupprecht HWR203The University of Arizona Example 2

19. Washburne/Rupprecht HWR203The University of Arizona Example 3

20. Washburne/Rupprecht HWR203The University of Arizona Example 3