Updated: Apr 2
LIDAR (Light Detection And Ranging) uses pulses of light emitted from a near-infrared laser mounted in a small aircraft to “scan” the land surface below. The collected data represent reflections from the ground, as well as any vegetation, buildings, or other solid surfaces. The raw data points are then processed to create a “bare earth” model which reveals unprecedented topographic details as though all vegetation and buildings or other structures have been completely stripped away. The images shown here were also processed using a slope function that further accentuates topography – flat areas are white (like the surface of the lake) and the darker the color the steeper the slope.
We've used LIDAR images for the Conway Lake area to map the streams in great detail (since most are hidden in the trees) and to refine the extent of wetland areas. If something unusual shows up in the stream samples we will have a better idea of which areas to check for sources of pollution.
These LIDAR images also provide historical evidence of early farming communities in this area. You can easily make out the stone walls that lined many of the roads and farm fields around the lake - the thin linear features are stone walls. You can also see cellar holes (foundations of abandoned buildings) as small rectangular features, and the old roadways that connected the farms. Many of those old farm fields have been abandoned and are now sitting hidden in the woods.
Click the links below to view the maps.