GIS Mapping

Maps are more, much more than a pretty picture. Maps have the potential to provide a wealth of information regarding features at specific geographical locations. In addition, data layers used to make maps in a GIS (Geographical Information System) can be utilized to extract statistics or perform mathematical operations to determine trends such as the degree of land use change in an area over time. The Tip of the Mitt Watershed Council now has the hardware/software capability and expertise to produce maps and perform spatial analyses.

To get a feel for this service that we provide, take this example. A lake association is interested in examining undeveloped parcels in the watershed to determine which parcels are the most sensitive, such that, if developed would negatively impact water quality. Using a combination of data layers, Watershed Council staff have the ability to pinpoint these 'priority' areas based on factors such as groundwater recharge potential, wetlands, and adjacency to protected lands. The lake association (and others such as planning boards) could then use this information to initiate campaigns to permanently protect or encourage conservation design for these sensitive lands.

Take another example, preservation and enhancement of greenbelts (vegetated land along shorelines). A greenbelt consisting of a variety of native woody and herbaceous plant species provides habitat for nearshore aquatic organisms as well as terrestrial animals such as birds. Greenbelts function as erosion control devices, stabilizing the shoreline with the plants' root structures to protect against wave action and ice. In addition, greenbelts provide a mechanism to reduce overland surface flow and absorb pollutants carried by the flow during rainstorms and snowmelt.

Obviously, it is important to protect greenbelts, but how do lake associations keep track? Using digital cameras and GPS (Global Positioning System), Watershed Council staff collect field data that, upon returning to the office, are dynamically linked in a GIS. The resultant digital map allows the user to click on any shoreline area of concern to view photos of the greenbelt and view other pertinent information collected in the field.

These are but two examples of the nearly endless mapping possibilities now at our and your fingertips. If you wish to have feature mapping or spatial analyses performed on an individual basis or for a lake/river association or other organization, contact Watershed Council staff for further information.

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