Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>Ī</SPAN></SPAN><SPAN><SPAN>nanga eggs are generally laid above the neap tide level during a spring tide cycle (Mitchell & Eldon, 1991). Based on this, MHWS-10 (the upper limit of 90% of all tides) is the optimal tidal level for this analysis. This method has been successfully used to map potential spawning extent in the Canterbury (Greer et at. 2015) and Greater Wellington (Taylor & Kelly. 2001) regions. A zero-meter contour of MHWS-10 is extracted and used as the baseline to create the spawning extent polygon from a 1m DEM. All geo-processing was undertaken using ArcGIS Pro version 2.9.0 with the Spatial Analyst extension.</SPAN></SPAN></P><P /><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>This geodatabase includes a feature class including all areas between the MSHW-10 and 0 m contours, as well as a second feature class which has been clipped to remove areas considered unsuitable to support spawning (i.e. not adjacent to watercourse).</SPAN></SPAN></P><P /><P><SPAN><SPAN>To be read in conjunction with the memorandum: Gisborne </SPAN></SPAN><SPAN><SPAN>Īnanga Spawning </SPAN></SPAN><SPAN><SPAN>Extent Modelling.</SPAN></SPAN><SPAN>Prepared by Morphum Environmental, dated September 2022.</SPAN></P></DIV></DIV></DIV>
Copyright Text: Data delivered by Morphum Environmental September 2022
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>Ī</SPAN></SPAN><SPAN><SPAN>nanga eggs are generally laid above the neap tide level during a spring tide cycle (Mitchell & Eldon, 1991). Based on this, MHWS-10 (the upper limit of 90% of all tides) is the optimal tidal level for this analysis. This method has been successfully used to map potential spawning extent in the Canterbury (Greer et at. 2015) and Greater Wellington (Taylor & Kelly. 2001) regions. A zero-meter contour of MHWS-10 is extracted and used as the baseline to create the spawning extent polygon from a 1m DEM. All geo-processing was undertaken using ArcGIS Pro version 2.9.0 with the Spatial Analyst extension.</SPAN></SPAN></P><P /><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>This geodatabase includes a feature class including all areas between the MSHW-10 and 0 m contours, as well as a second feature class which has been clipped to remove areas considered unsuitable to support spawning (i.e. not adjacent to watercourse).</SPAN></SPAN></P><P /><P><SPAN><SPAN>To be read in conjunction with the memorandum: Gisborne </SPAN></SPAN><SPAN><SPAN>Īnanga Spawning </SPAN></SPAN><SPAN><SPAN>Extent Modelling.</SPAN></SPAN><SPAN>Prepared by Morphum Environmental, dated September 2022.</SPAN></P></DIV></DIV></DIV>
Copyright Text: Data delivered by Morphum Environmental September 2022
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>Ī</SPAN></SPAN><SPAN><SPAN>nanga eggs are generally laid above the neap tide level during a spring tide cycle (Mitchell & Eldon, 1991). Based on this, MHWS-10 (the upper limit of 90% of all tides) is the optimal tidal level for this analysis. This method has been successfully used to map potential spawning extent in the Canterbury (Greer et at. 2015) and Greater Wellington (Taylor & Kelly. 2001) regions. A zero-meter contour of MHWS-10 is extracted and used as the baseline to create the spawning extent polygon from a 1m DEM. All geo-processing was undertaken using ArcGIS Pro version 2.9.0 with the Spatial Analyst extension.</SPAN></SPAN></P><P /><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>This geodatabase includes a feature class including all areas between the MSHW-10 and 0 m contours, as well as a second feature class which has been clipped to remove areas considered unsuitable to support spawning (i.e. not adjacent to watercourse).</SPAN></SPAN></P><P /><P><SPAN><SPAN>To be read in conjunction with the memorandum: Gisborne </SPAN></SPAN><SPAN><SPAN>Īnanga Spawning </SPAN></SPAN><SPAN><SPAN>Extent Modelling.</SPAN></SPAN><SPAN>Prepared by Morphum Environmental, dated September 2022.</SPAN></P></DIV></DIV></DIV>
Copyright Text: Data delivered by Morphum Environmental September 2022
Description: This dataset describes the current distribution of freshwater wetlands in NZ, along with a range of data describing human pressures, irreplaceability and conservation ranking. It was developed by Annge-Gaelle Ausseil of Landcare Research and others for the Department of Conservation as a contribution to the Waters of National Importance (WONI) programme, a whole of government initiative for the management of freshwaters. See "History" for further details.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The wetland assessment considered definitions and classification from the National Policy Statement for Freshwater Management (NPS-FM) and the Wetland Types in New Zealand document (Johnson and Gerbeaux, 2004). Mapping effort was focused on identifying natural wetlands rather than artificial or improved pasture type wetlands. Wetland polygons were smoothed using the Polynomial Approximation with Exponential Kernel (PAEK) method with a smoothing tolerance of </SPAN><SPAN>20</SPAN><SPAN> m. Farm ponds smaller than 1,000 m² were not mapped, and some wetlands highly likely to fall under the pasture exclusion criteria or former wetlands were excluded. Overall, a total of 2,</SPAN><SPAN>755</SPAN><SPAN> individual wetlands were delineated and classified in the </SPAN><SPAN>Waipaoa, </SPAN><SPAN>Waiapu, Hangaroa-Ruakituri, Uawa, Waimata, and Wharekahika-Waikura catchments.</SPAN></P><P><SPAN>Data </SPAN><SPAN>delivered by Morphum Environmental </SPAN><SPAN>August </SPAN><SPAN>2022</SPAN></P></DIV></DIV></DIV>
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Description: Attributes associated directly with network:FieldTypeDescriptionCatareaRealWatershed area in m2CUM_Area RealArea upstream of a reach (and including this reach area) in m2.NzsegmentIntegerReach identifier to be used with REC2 (supercedes nzreach in REC1).nz_fnodeIntegerUnique number of preceding river segment's outlet node.nz_tnodeIntegerUnique number of following river segment's inlet node.LengthdownRealThe distance to coast from any reach to its outlet reach, where the river drains (m).HeadwaterIntegerNumber (0) denoting whether a stream is a “source” (headwater) stream. Non-zero for non-headwater streams.HydseqIntegerA unique number denoting the hydrological processing order of a river segment relative to others in the newtork.StreamOrderIntegerA number describing the Strahler order a reach in a network of reaches.euclid_distRealThe straight line distance of a reach from the reach “inlet” to its “outlet”.upElevRealHeight (asl) of the upstream end of a reach section in a watershed (m).downElevRealHeight (asl) of the downstream end of a reach section in a watershed (m).upcoordXRealEasting of the upstream end of a river segment in m (NZTM2000).upcoordYRealNorthing of the upstream end of a river segment in m (NZTM2000).downcoordXRealEasting of the downstream end of a river segment in m (NZTM2000).downcoordYRealNorthing of the downstream end of a river segment in m (NZTM2000).sinuosityRealActual distance divided by the straight line distancegiving the degree of curvature of the streamnzreach_rec1IntegerThe REC1 identifiying number for the corresponding\closest reach from REC1 (can be used to retrieve the REC management classes)headw_distIntegerDistance of the furthermost “source” or headwater reach from any reach (m).Shape_lengthRealThe length of the reach (vector) as calculated by ArcGIS.SegslpmaxRealMaximum segment slope along length of reach.SegslpmeanRealMean segment slope along length of reach.LIDIntegerLake Identifier number(LID) of overlapping lake.ReachtypeIntegerA value of 2 is assigned if the segment is an outlet to the lake, otherwise 0 or null.nextdownidintegersegment number of the most downstream reach
Description: The important attributes are nzsegment (primary key), which can be used to join the watershed polygons to the river network, and the old_nzreach (which can be used to retrieve values from REC1 river classification, and other previously calculated properties). The shape_area gives the area of the watershed in meters squared.
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