Map Functions

The map display has functions to pan, to zoom, to show coordinates, and to identify features on NHD and service layer features on the map.

Map Projection

The map display projection is set to Web Mercator. You cannot change the display projection however, you can use the Coordinates Widget to convert map coordinates to other projections.

Zooming

Change the Zoom level with zoom buttons or by double clicking. You an also use the mouse wheel to control zoom levels.

• Click the + or - button in the upper left corner of the map to control zoom levels.
  ‎
  ‎
• Double click in the map to zoom in one level.
• Ctrl + double click to zoom out one level.

Panning

Use the panning function to navigate the map.

NOTE: The Identify Tool must be inactive to pan the map.

1. Hover cursor on map.
2. Click and hold.
3. Drag cursor across map.‎ Cursor changes to a hand while the map pans.
   
   

Map Layers

Control the visibility of service layers from the Map Layers pane.

You can control the visibility of your services on AGOL, and can also the visibility of National Map service layers including WBD, NHD, Contours, Hillshade, and Boundaries. 

• Click the map layers button to open or close the map layers pane.
  
• Click the arrow to expand or contract the services.
   contracted
  expanded
• Click the eye to control visibility of the map layer.
  
  
  
   

Base Maps

HydroAdd has a variety of base maps to choose from. To change the base map, click the base map button and click the desired base map. To close base map panel, click the base map button again.

Learn more about HydroAdd Base Maps.

Identify Tool

Use the Identify tool, top left, to examine features attributes of map layers and service layers.

NOTE: The Identify Tool must be inactive to pan the map.

Learn more about the Identify Tool.

Coordinate Widget

Use the Coordinate Widget, bottom left, to view coordinates, to navigate to specified coordinates, to add conversions, to capture map coordinates, and to copy coordinates into your clip board. Coordinates update in real time as you move the cursor or pan the map.

Learn more about the Coordinate Widget.