Abstract or Description

Vernal pools are important pools of water that are only filled during spring and fall months. During the summer months they are typically dry. They are important habitats for many amphibians, reptiles, and insects. This map depicts the significant vernal pool locations in Maine and drought conditions in the month of September 2016 and the amount/location of vernal pools that fell in drought areas. The map was made by overlaying national drought data for the 6, 13, 20, and 27th of September 2016. The data was clipped to the state of Maine and the vernal pools were added along with a halo to enhance visibility. Projection: Transverse Mercator. Coordinate system: NAD 1983 UTM zone 19.

About the Author

Tom Kiffney is a Biology and Environmental Science major at Colby College, in Waterville, Maine. He created this map for Introduction to GIS and Remote Sensing class.

Source Data Note

Drought data: Downloaded from the United States Drought Monitor. Link: http://droughtmonitor.unl.edu/ - Shapefiles for any month can be downloaded here.

Vernal Pool data: Downloaded from Maine Office of GIS. Link: http://www.maine.gov/megis/catalog/ (4/21/2017)

Colby's standard datasets for Maine Projects: Hillshade, Maine Boundary, Canadian Shoreline, Hydrology


In Copyright



To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.