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| Samples from the USGS-Woods Hole Contaminated-Sediments Database (white and black points) superimposed on a shaded relief map of NOAA bathymetry. Colors denote mean low-water depths: Blue, >40'; green, 30-40'; yellow, 20-30'; orange, 10-20'; red, <10'. |
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U.S. Department of the Interior, U.S. Geological Survey
URL: http://pubs.usgs.gov/fs/boston-harbor/figures/fig2.html
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Last modified: 15:15:41 Tue 25 Nov 2003
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