Digital Orthophoto Quads
In 1976/1977, the USGS completed an aerial photograph survey of the six main islands (Hawaii, Oahu, Maui, Molokai, Lanai, Kauai) of Hawaii. The aerial photographs were orthorectified and grouped into 127 orthophoto quadrangles. Someone (I’m not sure who) scanned the original paper maps at 400 dpi, and MrSID [...]
Historical T-Sheets are shoreline maps that were created in the late 1800 to early 1900s for major waterways and coastal areas of the United States. The T-Sheets contain information such as locations of buildings, names of shoreline features, and detailed descriptions of shorelines.
This collection contains over 250 maps covering the following locations:
Bathymetric map overlay of the Hawaiian Islands.
KML Content Google Earth Library
Source Data The Hawaii Coastal Geology Group