Below is a table of the figures and maps from the 2017 State of Narragansett Bay and Its Watershed Summary report  and Technical report. The table can be sorted by clicking on the column headings or using the search bar. If you are looking for a specific figure or map that is not listed here, please contact info@nbep.org.

 

TitleRaw DataFile typeIndicatorYear
Figure 4 - Historical changes in percentage of Narragansett Bay Watershed classified as forest or urbanGet dataFigureLand Use2017
Figure 2 - Comparison of WWTF nitrogen loading budgetsGet dataFigureNutrient Loading2017
Figure 3 - Comparison of WWTF phosphorus loading budgetsGet dataFigureNutrient Loading2017
Figure 4 - Yearly average flow and total flow in millions of gallons per day (MGD) for the Blackstone River from USGS gage at WoonsocketGet dataFigureNutrient Loading2017
Figure 3 - Estimated total population from 1850 to 2000 in Narragansett Bay WatershedGet dataFigurePopulation2017
Figure 1 - Annual precipitation at Providence, RIGet dataFigurePrecipitation2017
Figure 2 - Annual precipitation at Worcester, MA Get dataFigurePrecipitation2017
Figure 3 - Annual Palmer Drought Severity Index (PDSI) for Rhode IslandGet dataFigurePrecipitation2017
Figure 4 - Annual Palmer Drought Severity Index (PDSI) for MassachusettsGet dataFigurePrecipitation2017
Figure 5 - Climate model projection of the winter total precipitationin RI or MA to 2100Get dataFigurePrecipitation2017
Figure 6 - Climate model projction of the winter annual snowfall in RI or MA to 2100Get dataFigurePrecipitation2017
Figure 1 - Summer (June, July, August, September) average water temperature from 1959 to 2016.Get dataFigureSeagrass2017
Figure 1 - Annual average water temperature at Woods Hole, MA 1880-2015Get dataFigureTemperature2017
Figure 2 - Annual mean air temperatures at Worcester, MA 1949-2015Get dataFigureTemperature2017
Figure 3 - Annual mean air temperature at Warwick, RI 1895-2015Get dataFigureTemperature2017
Figure 4 - Annual mean surface water temperatures in Narragansett Bay 1960-2010Get dataFigureTemperature2017
Figure 5 - Annual mean river/stream water temperatures in Scituate ReservoirGet dataFigureTemperature2017
Figure 6 - Annual mean river/stream water temperatures at Millville, MA Get dataFigureTemperature2017
Figure 7 - Annual mean river/stream water temperatures from 2007-2014Get dataFigureTemperature2017
Figure 8 - Seasonal air temperature projections for RI from 1950-2100Get dataFigureTemperature2017
Figure 1 - Total population and percentage of population in the Narragansett Bay Watershed served by sewersGet dataFigureWastewater2017
Figure 2 - Narragansett Bay pelagic-to-demersal (P:D) ratio for the fish community calculated from abundance-per-tow data for GSO and mean annual abundance data for RIDEM trawl surveysGet dataFigureEstuarine Fish Communities2017
Figure 3a - Mean annual number of individuals per tow for four warm-water fish species (summer flounder, butterfish, longfin inshore squid, and scup) caught in the URI GSO fish trawl surveyGet dataFigureEstuarine Fish Communities2017
Figure 3b - Mean spring-summer sea surface temperatureGet dataFigureEstuarine Fish Communities2017
Figure 3c - Annual mean abundance for four warm-water fish species (summer flounder, butterfish, longfin inshore squid, and scup) caught in the (RIDEM) trawl surveyGet dataFigureEstuarine Fish Communities2017
Figure 3d - Mean annual bottom-water temperature from the RIDEM trawl surveyGet dataFigureEstuarine Fish Communities2017
Figure 4 - Mean annual numbers of individauls per tow (GSO trawl) and mean annual abundance (RIDEM trawl) for American lobster and winter flounderGet dataFigureEstuarine Fish Communities2017
Figure 4 - Hypoxia Index for individual sites within each site group within the Narragansett Bay Fixed Site Monitoring Network (NBFSMN), relative to the 2.9 mg/l thresholdGet dataFigureDissolved Oxygen2017
Figure 5 - Hypoxia Index averages over sites within each site group within the Narragansett Bay Fixed Site Monitoring Network (NBFSMN), relative to the 2.9 mg/l thresholdGet dataFigureDissolved Oxygen2017
Figure 11 - Minimum bottom water dissolved oxygen values for all Narragansett Bay Fixed Site Monitoring Network (NBFSMN) sites for dry years (2007, 2014, 2015) and for the wet years (2006, 2009, 2013)Get dataFigureDissolved Oxygen2017
Figure 6 - Summer (July-September) chlorophyll concentrations from grab (filtered water) samples from 2002 to 2015Get dataFigureChlorophyll2017
Figure 7 - Fox Island (GSO) chlorophyll concentrations (ug/l)Get dataFigureChlorophyll2017
Figure 8 - GSO Dock (MERL) chlorophyll concentrations (ug/l)Get dataFigureChlorophyll2017
Figure 9 - Mean summer (July-September) chlorophyll concentrations (ug/l) and maximum surface chlorophyll concentration from 2010 to 2015Get dataFigureChlorophyll2017
Figure 10 - Mean summer (July-September) chlorophyll concentrations (ug/l) and maximum surface chlorophyll concentration from 2002 to 2014Get dataFigureChlorophyll2017
Figure 11 - Chlorophyll Bloom Index for individual sites , relative to site-specific thresholdsGet dataFigureChlorophyll2017
Figure 12 - Chlorophyll Bloom Index averages over multiple sites, relative to site-specific 80th percentile thresholdsGet dataFigureChlorophyll2017
Figure 19 - Winter-spring chlorophyll plotted versus water temperature during the month of the bloom from 1977 to 2017 at the GSO DockGet dataFigureChlorophyll2017
Figure 3 - Light extinction coefficients (k), derived from Secchi depth, by season in 2014Get dataFigureWater Clarity2017
Figure 4 - Summer averages light extinction coefficents (k), calculated from Secchi depth, at Fox IslandGet dataFigureWater Clarity2017
Figure 5 - Summer (July, August, September) light extinction coefficients (k) for 2007 to 2014 based on PAR data for the Providence River Estuary and Secchi depth data for the West and East PassagesGet dataFigureWater Clarity2017
Figure 6 - Summer light extinction coefficients (k) in wet years (2006 and 2013) and dry years (2007 and 2014) based on PAR data and Secchi depth data (Fox Island only)Get dataFigureWater Clarity2017
Figure 2 - Acreage change in shellfish growing areas by category in Narragansett Bay at five-year intervalsGet dataFigureShellfish Areas2017
Figure 3 - Acreage change in shellfish growing areas by category in the Upper Estuary region at five-year intervals. Bars represent the magnitude of acreage gain or loss by time-steps.Get dataFigureShellfish Areas2017