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1. On the ribbon, click the Insert tab and click the New Map button.
2. In the Contents pane, rename the map “Lab2Topo”.
3. Return to the Catalog pane.
4. Expand the HydrologyLab.gdb geodatabase.
5. Drag the DEMft and Watersheds_StatePlane layers into the Lab2Topo map view.
6. In the Contents pane, uncheck the Watersheds_Stateplane layer.
7. Right-click the DEMft layer and select Symbology.
8. For ‘Color scheme’, scroll down to the very bottom and select the Multipart Color Scheme or another continuous color scheme of your choice.
   
   
   
   

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Now you are ready to start a new map and display the tabular rain gage data you just downloaded.

1. Return to ArcGIS Pro.
2. Click On the Insert menu and select ribbon, click the Insert tab and click the New Map button.
3. Click “Map1” in In the contents Contents pane to rename it as , rename the map “Lab2Precip”. Click Save
4. Return to the Catalog pane.
5. Drag Watersheds_StatePlane onto  into the Lab2Precip map displayview.
6. Click the Geoprocessing tab and search for ‘Excel to Table’.
7. For the Input Excel File, selectPrecipStations. Rename the output table PrecipStations.
8. Right-click the HydrologyLab folder and select Refresh.
9. Expand the PrecipStations.xlsx Excel file to see the individual worksheets it contains.
10. Drag the PrecipStations$ worksheet into the Lab2Precip map viewClick Run.
11. In the Contents pane, right-click the PrecipStations PrecipStations$ table and select Display XY Data.
12. For ‘X Field:’, select the LONGITUDE field.
13. For ‘Y Field:’, select the LATITUDE field.
14. For 'Spatial ReferenceCoordinate System', click the Browse Select coordinate system button.

Because the coordinates are in the form of latitude and longitude in decimal degrees, you know you will need to select a geographic coordinate system, rather than a projected coordinate system.  While the data could theoretically be in any geographic coordinate system, you will select the North American Datum 1983, commonly abbreviated NAD 83, because this is coordinate system of the data provided on the NCDC website.

1. Scroll towards the top of the 'XY Coordinate Systems Available'.
2. Ensure that Double-click Geographic Coordinate Systems > is already expanded, then expand North America > USA and Territories.
3. Select NAD 1983 and click OK.
4. Ensure that your window matches that below and click RunOK.
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The points should now appear on top of the watersheds, though they also extend beyond the watersheds in the Buffalo-San Jacinto subbasin, since we downloaded them for the entire Galveston Bay-San Jacinto subregion.

Exporting XY data

Since the points appear to be in reasonable locations (rather than in another country or the middle of the ocean), you will want to export them to a new feature class in your ElevationRainfall geodatabase.  Exporting to a feature class will allow you to reuse this points layer in other future map documents without having to go through the display XY data process each time.

1. Right-click the PrecipStations_Layer layer and select Data > Export Features.

Because you last exported a text file outside of your geodatabase, notice the output feature class is now set to a shapefile in your Lab 2 folder, rather than a feature class within your ElevationRainfall geodatabase.

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Since you are now using a permanent feature class, you may remove your temporary Events layer and the corresponding Excel table.

1. Right-click the PrecipStations_Layer layer and select Remove.
2. Right-click the PrecipStationsIn the Contents pane, right-click the PrecipStations$ table and select Remove.

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