Importing Features (1d & 2d) Click on Hydrography Click on Load and Load Data Next Browse to A_NHD_Maintenance/1804/ Import_Shapefiles/Import_Line.shp Open Next Add Next I do not want to load all the features into a subtype Next Load all of the source data Next Finish Preview import_line data This is the data you are going to import Repeat steps in slides 3-12 for Import_Poly using Import_Poly.shp as the input ArcMap: Zoom to Layer Import_Line feature class Flip the feature in the yellow box You flip this feature outside the NHDGeoEditTools Now it is pointing down stream Gap line-ends Find the largest gap or overshoot This will be used to set your snapping tolerance later .85 m There is a.85 meter gap Gap line-edges 2.46 m 1.0 m There are gaps of 1.0 and 2.46 meter gap Overshoot line-edges 2.4 m This overshoot is 2.4 meters A.)Snap end features: (Stream end to stream end) Open Build Geometric Network Wizard in Arc Catalogue. 1. Build a geometric network from existing features. 2. Select NHDFlowline and Import_Lines. 3. Click No on 'Do you want to preserve existing enabled values?' 4. Click No on 'Do you want complex edges in your network?' Note: Choose 'no' on first round to make sure that all import_lines that CAN snap to an end do so rather than snapping to edge. (snap end to end) Choose 'yes' on second round to catch those arcs that had no end node within snap tolerance to snap to. (snap end to edge). 5. Click Yes on 'Do your features need to be snapped', check ONLY import line from 'Select features that can be moved' list. Specify a suitable tolerance for your dataset. 6. Click No on 'Do you want to assign weights to your network?' 7. Click Finish on 'Summary of your input.' 8. Delete Network B.) Repeat steps from 'A' choosing Yes on 'Do you want complex edges in your network?' Click on New and Geometric Network Next Build a geometric network from existing features Next Note: You will only see this window during the first network build if you previously had a network (Enabled Field in NHDFlowline table) Skip to next slide if you do not see this window No Next Select: NHDFlowline & Import_Line Use default name Next Do you want complex edges in your network? No Next Do your features need to be snapped - Yes Snap Tolerance Based on largest gap or overshoot from data anaysis Select features that can be moved Select Import_Line Next Do you want to assign weights to your network? No Next Finish Hydrography_Net is created Right click on Hydrography_Net - Delete Right click in white space New Geometric Network Next Select NHDFlowline and import_line Next No Next Select both if you have gaps within your local data Next Select Yes features need to be snapped Set the snap tolerance to 3 because the largest gap was less than 3 Select import_line Next No Next Finish Delete the Geometric Network Open ArcMap and Select Metadata Session to start the NHDGeoEditTools Click on Editor and open Editing Options Set Snapping tolerance to 1 map units Select all features in import_line Click Edit and Copy Select ADD NHDFLOWLINE and Select Subtype Select StreamRiver and StreamRiver Hydrographic Category = Intermittent Select Import NHDFlowline Geometry Select paste Apply NHDFlowline Rules and Save NHDFlowline Add Import Polygons Select all features in import_poly Click Edit and Copy Select ADD NHDWATERBODY and Select Subtype Select LakePond and LakePond Hydrographic Category = Perennial Select Import NHDWaterbody Geometry and Paste Apply NHDWaterbody Rules and Save NHDWaterbody Add The Apply Rules made all NHDFlowlines in LakePonds Artificial Paths Start All Programs NHDUtilities NetworkBuilder Browse to 1804_alb.mdb- Hydrography, NHDflowline Build Network Build a Geometric Network Utility Network Analyst Toolbar: Add Edge Flag tool Add Flag in location shown below Trace Task Set to Trace Upstream Solve Network has traced through pre-existing features and new import features indicating that all new imports snapped correctly Turn Labels on: By displaying ComIDs you can ensure that all features were split correctly Assign Reach Codes to new features Click on Utilities and Assign Reach Code Select NHDFlowline and NHDWaterbody Click OK All Features now have a ReachCode