Name: Northland Combined Freshwater Wetland Extents

Display Field: Value

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Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Detailed information about the data, including but not limited to: </SPAN></P><UL><LI><P><SPAN>Wetlands were mapped using a combination of LiDAR (2018) and RGBI (2014-2016) imagery captured by Northland and Auckland Councils. Wetlands were validated using a combination of Photoblique and Biospatial_KMR Historic Imagery layer derived from Retrolens. </SPAN></P></LI><LI><P><SPAN>Slope, Spectral signatures, Topographic wetness index and vegetation structure were inputs into the machine learning model. </SPAN></P></LI><LI><P><SPAN>Information is current to the datasets available. </SPAN></P></LI><LI><P><SPAN>Data was derived using a combination of machine learning model training and manual output validation. </SPAN></P></LI><LI><P><SPAN>Wetlands have been manually selected using a combination of aerial surveys, GIS desktop surveys and Photoblique validation. As such data is limited to wetlands which have been manually validated and may not be representative of all wetlands present. </SPAN></P></LI><LI><P><SPAN>Data is presented using a polygon approach for ease of display. </SPAN></P></LI><LI><P><SPAN>Elevation data has been attached for data overlay in Photoblique </SPAN></P></LI></UL><P><SPAN>Data Limitations</SPAN></P><UL><LI><P><SPAN>Data may be subject to false positive and/or false negative results. </SPAN></P></LI><LI><P><SPAN>The spatial extents can be used as a guide for where waterbodies exist </SPAN></P></LI><LI><P><SPAN>Data is a representation of the capture date of the imagery and LiDAR </SPAN></P></LI></UL><P><SPAN>Version Date: 2024/05/22</SPAN></P></DIV></DIV></DIV>

Service Item Id: 5f0fede0094e419290b7e3737b5bdf3a

Copyright Text: Biospatial Limited Photoblique Limited  Auckland Council Northland Regional Council  

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