Federal flood maps for New Hampshire are being upgraded to reflect changing scientific models and increased urbanization. Learn more at the open house.

Jutting from the deep briny mists of the mid-Atlantic, some 800 miles (1287 km) due west of Portugal, the Azores strike one as bejeweled, fern and flower-encrusted baubles in a vast expanse of blue ...

Abstract: This paper addresses the problem of contour lines extraction from scanned topographic maps. A novel method called "local window segmentation" is developed and used to overcome the difficulty ...