Tina Randazzo

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Lehigh River Watershed
GIS/GPS

• Tina Randazzo
• Paul Tsai

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GIS Overview

• Partnership with the Wildlands Conservancy
• Ongoing 4 year project
• GIS mapping provides a spatial framework for
  analyzing environmental data, such as water
  quality data, and relating it to the
  characteristics of the land around it.
• LEO's capabilities are particularly focused on
  water quality research on the Lehigh River and
  its many tributaries.

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Project Goals

• Create coverages of various environmental
  categories in the Lehigh River watershed.
• Make coverages available to other LEO users.
• Make coverages accessible on the web.

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Tools and Resources

• Tools
• Arcview
• Arc/Info
• Excel

• Resources
• PASDA
• ESRI
• DEP
• Geocode.com
• Wildlands

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Area of Coverages

• Counties
• Berks
• Bucks
• Carbon
• Lackawanna
• Lehigh

• Luzerne
• Monroe
• Northhampton
• Schuylkill
• Wayne

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Area of Coverages
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How do we do what we do?

• What steps are involved in
• making a coverage?

Me hungry eat koala?
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Two Examples

• Creation of Sub Basin
• Leads to Watershed boundary
• Continuing work on tributaries

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Getting data
Data is usually downloaded by county. In this
example we downloaded basin information for all
watershed counties. However, there is too much
Information.
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Clipping Data
Zooming into the area of interest, I overlaid a
stream coverage of all the streams flowing into
the Lehigh River. Now I need to Clip the
wanted basins.
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Final Basin
Here is the final Basin. By letting the
computer handle more of the processes, we
eliminate many possible errors.
GW Hunter
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Whats the difference?
The Difference between the old and new basins is
obvious in the picture shown. Now, we need
to Convert the basins into sub basins.
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Basins to Sub Basins
Zooming in with the stream coverage overlaid, we
can now select the basins that form a sub
basin (basins that include streams that into
the Lehigh River).
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Final Sub Basins
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Difficulties
As evident in the picture, many streams flow into
the Lehigh River (pink). So deciding which
Waterways should be considered as a major
tributary is very difficult, since by
definition all these streams are tributaries.
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After many hours...
It was decided that these waterways be classified
as major tributaries of the Lehigh River.
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What we make
Shown Topography Coverage Made by Nick Scala
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More Stuff
Shown Hunter and Brents Lehigh River Trail
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Enough?
Road Map made for Andy Drabick.
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The End
The
End