The State of Boston Harbor Report

. Table of Contents
i	Credits
1	Introduction
2 4	Part I - The Boston Harbor Project Boston Harbor Project Timeline
6 7 18 24	Part II - Mapping the Harbor’s Recovery Water Quality The Floor of the Harbor Fish and Shellfish
28 30 32 33	Part III - Boston Harbor's Tributary Rivers River Bacteria River Clarity River Algae and Chlorophyll
34 35 37 37	Part IV - After The Outfall: Changes in the Harbor and Bay Changes in Boston Harbor What is the Future of the Harbor? Massachusetts Bay: Monitoring
42	References
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The State of Boston Harbor

	FIGURES
3 4 4 5 6 7 7 8 9 11 12 13 15 17 17 19 20 20 20 21 21 22 23 23 24 25 27 31 32 32 33 33 34 35 36 36 38 39 40 40	I-1 I-4 I-5 I-6 I I-1 I I-2 I I-3 I I-4 I I-5 I I-6 I I-7 I I-8 I I-9 I I-10 I I-11 I I-12 I I-13 I I-14 I I-15 I I-16 I I-17 I I-18 I I-19 I I-20 I I-21 I I-22 I I-23 I I I-1 I I I-2 I I I-3 I I I-4 I I I-5 IV-1 IV-2 IV-3 IV-4 IV-5 IV-6 IV-7 IV-8	Map of Boston Harbor Primary and secondary treated flows, 1990-2000 Solids discharges, 1988-2000 Metals discharges, 1989-2000 Changes in sources of harbor contamination Model of tidal mixing in Boston Harbor Modeled dilution patterns of treatment plant discharges into the Harbor 1939 Report on coliform bacteria Enterococcus bacteria in Boston Harbor Annual pattern of high bacteria counts at Harbor beaches, 1987-2001 Patterns of water clarity in Boston Harbor, contour maps, 1993-2000 Ammonium levels at the previous harbor outfall sites, 1997-2000 Summer chlorophyll in Boston Harbor, contour maps, 1995-2000 Pattern of dissolved oxygen in Boston Harbor Average dissolved oxygen in the Inner Harbor Boston Harbor sediment types, contour map USGS metals sampling locations in Boston Harbor Lead decrease in Boston Harbor sediments Sediment oxygen demand in Boston Harbor, 1992-2000 Sediment profile imaging sites and sampling locations Boston Harbor sediment profile images, contour maps, 1989-2000 Oxygen penetration into harbor sediments, contour maps, 1989-2000 Prevalence of Ampelisca in Boston Harbor, 1989-2001 Abundance and Diversity of Benthic Animals in the Harbor, 1990-1999 Boston Harbor fish and shellfish monitoring locations Liver disease in winter flounder, 1984-2001 PCBs in lobster hepatopancreas (tomalley), 1992-2000 Spatial pattern of river bacteria in 2000 Patterns of river bacteria compared to phases of CSO control Comparison of water clarity in the rivers and the harbor Spatial trend in Charles River Water Clarity Comparison of chlorophyll in the rivers and the Harbor Harbor contamination sources after closing of Harbor outfalls Trends in bacteria at previous harbor outfall sites Water clarity at previous harbor outfall sites Harbor-wide changes in ammonium Sampling sites throughout Massachusetts Bay Model predictions of effluent dilution compared to monitoring results Satellite imagery of chlorophyll, 1997-2000 Seasonal chlorophyll levels at the Bay outfall site, 1992-2001