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<br />South Platte Water Rights Management System <br /> <br />',l.~ 40..)) i1>,' <br /> <br />Modifying the stream <br />network <br /> <br />Modifying the Arcllnfo <br />coverages <br /> <br />station_code <br /> <br />a unique 8-character abbreviation used by SPWRMS <br />to represent a gauge, equivalent to the 'abbrev' field in <br />gagingstations table <br /> <br />When a new point is added to the structures or gauges layer, an ArclInfo coverage and <br />Informix table must be modified to associate the new point to the stream network. <br /> <br />1. Create a new node in the network coverage. Use ARCEDIT to split an existing arc <br />into two, or use an existing node if there is one close enough. <br />(editcoverage phS_network, edit feature ARC) <br />Arcedit: sel one <br />Arcedi t, split <br />2. Label the new reaches. Get the highest current reach ID in the Informix tables, and <br />number the new reaches sequentially higher. Keep records of all changes, so the infor- <br />mation can be entered into the Informix table. <br />a. To get the highest current reach_id from Informix: <br />SELECT reach_id FROM la9_loss_default <br />ORDER BY reach_id DESC; <br />b. To number reach_ids sequentially larger, all arcs which compose the new reach <br />must be attributed with the appropriate reach_id. <br />c. To find the length of all arcs that make up rhe new reach: <br />- select all arcs that compose the reach <br />run the ARCEDIT ami "calclength.aml" <br />d. Make note of the reach_ids and lengths of the new reaches. <br />3. Snap the new point to the newly created node. Use ARCEDIT to snap the label to the <br />node. <br />(editeoverage ph5_strearn_g (or ph5_struets)), editfeature <br />LABEL) <br />Arcedit: snape overage network <br />Arcedit: snapfeature label node <br />Arcedit: snapping closest 100 (or some other appropriate <br />value) <br />Areedit: select one (select the new gage or structure) <br />Arcedit: snap <br />4. Build the network coverage for nodes and lines. Use ARC utilities to perform the <br />builds. <br />Arc: build network line <br />Arc: build network node <br />5. Build the points coverage for poinl:S. This is either the structures coverage or gauges <br />coverage, depending on what was edited. <br />Arc: build ph5_strearn_9 point <br />6. Perform the near command, which associates labels with nodes in the network. <br />Arc: near ph5_stream_9 network node 5 <br />7. For any gauges not on the stream network, register the gauges to an arbitrary node on <br />the network. <br />Info, select ph5_strearn_9 <br />Info, reselect ph5_network#=O <br />Info, calc ph5_network#=2 <br />Info, quit <br />Arc, addxy ph5_strearn_9 point <br />8. Create a new binary file of the network coverage. This file, accessed by the SPWRMS <br />application. is a subset of the information contained in the ARC coverage. <br /> <br />22 Database Manual <br />