Boston Groundwater Trust Mapping Tools
Zoom All	Click on the zoom all button (shown left) and the map will automatically refresh at the largest scale.
Zoom In	To zoom in on a location, first press the zoom in button (shown left). Then click on the desired location. The map will refresh with a tighter scale, centered on the location that you chose. Continue to click on the desired location to get a progressively larger scale.
Zoom Out	This function works like zoom in in reverse. Click on the zoom out button (shown left), then click on a point on the map. When it refreshes, the new map will be centered on the point you chose at the next smaller scale.
Arrows	To recenter the map in a given direction, click on the arrow on the top of the map that points in the desired direction (shown left). You must have already zoomed in at least one level, since the arrows will not move the map past its end boundaries.
Pan	Another way to recenter the map, again after zooming in at least one level, is to click on the pan button (shown left). Then, click on a location on the map, continue to hold the cursor button down and move it to the location where you would like the original point to move to, then release the button. The map will refresh with the point at the location that you chose.
Well Data	Click on the well data button (shown left) and then click on a well on the map. The most recent groundwater level will appear, along with the date of the reading. In a box to the right of the map, all prior well readings will appear.
Identify	Click on the identify button (shown left) and then click on a well on the map. The well identifier number will appear. In a box to the right of the map, additional location information about the well will appear.
Link to Chart	This link appears in the box to the right of the map when the Show Data function is in use. Click on it and a chart of all the readings of the particular well will appear in a separate window. Also appearing with the chart is additional data on the well, including its address.
Export Data to Excel	This link also appears in the box to the right of the map when the Show Data function is in use. Click on it and the data will be exported to an Excel worksheet.