When there is land missing from the coastline, do the following:

1. Create a polygon (see above). Choose "Land Mass" from the drop-down menu.
2. Trace along the land in the imagery. No attribute data is needed.

When there is water missing, do the following:

1. Create a polygon. Choose "Water" from the drop-down menu.
2. Trace along the water in the imagery.
3. No attribute data is needed.

  Tip: You may need to toggle between the Map and Satellite views to get a better perspective (see below).


Left: Satellite image of coastline; Right: Map image of coastline



Left: Using satellite image to draw "Water" polygon; Right: Updated map image. (Will turn dark blue after some time has passed.)

Adding an Island

When you draw an island, it appears above any water feature. To add an island:

1. Create a polygon (see above). Choose Island from the drop-down menu.
2. Trace along the island in the imagery.
3. Add any appropriate attribute data.

Adding a River

Rivers are drawn differently than a bay or a lake, which would use only the polygon feature. Here's how:

1. Create a line. Choose River from the drop-down menu.
2. Draw the line along the center of the river in the imagery.
3. Add any appropriate attribute data.
4. If the river is wider than a thin line, you can "fill in" where the water is by:
1. Create a polygon. Choose Water from the drop-down menu.
2. Draw sections of the river drawing polygons around the coastlines in the imagery.
3. Add any appropriate attribute data.