Comparison of GPS Point Selection Methods for GIS Area Measurement of Small Jurisdictional Wetlands

U.S. Army Corps of Engineers (USACE) regulates fill of jurisdictional waters of the United States including wetlands. Recent USACE regulations set a threshold of impacts to wetlands at one-half acre. Impact area can be determined by Global Positioning System (GPS) measurement of wetland boundary and Geographic Information System (GIS) calculation of impact area. GPS point selection methods include (1) equal time interval, (2) transect and (3) intuition. Four two-acre shapes were measured with each GPS method and brought into GIS for area calculation. Analysis of variance and Root Mean Square Error analyses determine that the transect method is an inferior point selection method in terms of accuracy and efficiency.

Grantor dc:publisher

University of North Texas

Year dc:date

2001

Author dc:creator

• Shelton, Michael

Contributors dc:contributor

• Atkinson, Samuel F.
• Acevedo, Miguel F.
• Ji, Minhe

• Wetland ecology.
• Wetlands -- Remote sensing.
• Geographic information systems.
• Global Positioning System.
• GIS
• wetlands
• impact area
• USACE

Statement dc:rights

• Use restricted to UNT Community
• Copyright
• Shelton, Michael
• Copyright is held by the author, unless otherwise noted. All rights reserved.

Language dc:language

English

Identifier

oclc: 51259655
untcat: b2457256
https://digital.library.unt.edu/ark:/67531/metadc2831/
ark: ark:/67531/metadc2831

OAI identifier oai:identifier

info:ark/67531/metadc2831