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

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

Washburne/Rupprecht HWR203The University of Arizona Contour Lines - Hill

Washburne/Rupprecht HWR203The University of Arizona Contour Lines - Valley

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/

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

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

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

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

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

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)

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

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

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

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

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

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

Washburne/Rupprecht HWR203The University of Arizona Example 2

Washburne/Rupprecht HWR203The University of Arizona Example 2

Washburne/Rupprecht HWR203The University of Arizona Example 3

Washburne/Rupprecht HWR203The University of Arizona Example 3