shrug-l: proportion of watershed upstream of monitoring location

Kristal Walsh kwalsh at
Fri Sep 7 12:35:53 EDT 2007

Mike, I was reading through the posts and remembered that NHDPlus (I'm
pretty sure) has contributing area information associated with the
monitoring stations.  Check it out!   Kristal


Kristal Walsh, GIS Specialist

Baskerville-Donovan, Inc.

449 W. Main St.

Pensacola, FL  32502

850-438-9662, ext. 4354



From: Michael McManus [mailto:mmcmanus at TNC.ORG] 
Sent: Friday, September 07, 2007 7:27 AM
To: shrug-l at
Subject: shrug-l: proportion of watershed upstream of monitoring


I have a point shape file of monitoring locations on rivers.  I have a
shape file of the watershed polygons in which those monitoring stations
are located.  For a particular monitoring location, how do I calculate
the proportion of the watershed that is upstream from that location?






Michael McManus

Senior Aquatic Ecologist

The Nature Conservancy

625 N. Adams Street

Tallahassee FL 32301

850.222.0199 (office)

850.559.1530 (cell)

850.222.0973 (fax)



Courtesy Research Associate

Department of Biological Science

Florida State University


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