These data provide an accurate high-resolution shoreline compiled from imagery of NARRAGANSETT BAY, RI . This vector shoreline data is based on an office interpretation of imagery that may be suitable as a geographic information system (GIS) data layer. This metadata describes information for both the line and point shapefiles. The NGS attribution scheme 'Coastal Cartographic Object Attribute...

This hosted feature layer has been published in RI State Plane Feet NAD 83.Public access points to the shoreline of Narragansett Bay and Rhode Island coastal waters to parks, beaches, refuge areas, boat ramps, marinas and other areas open to the pubic managed by federal, state, and municipal government, private organizations with interests in land preservation and protection, and rights-of-way that have been designated by the RI Coastal Resource Management Council

These data were automated to provide an accurate high-resolution historical shoreline of Narragansett Bay, RI suitable as a geographic information system (GIS) data layer. These data are derived from shoreline maps that were produced by the NOAA National Ocean Service including its predecessor agencies which were based on an office interpretation of imagery and/or field survey. The NGS attribution scheme 'Coastal Cartographic Object Attribute Source Table (C-COAST)' was developed to conform the attribution of various sources of shoreline data into one attribution catalog. C-COAST is not a recognized standard, but was influenced by the International Hydrographic Organization's S-57 Object-Attribute standard so the data would be more accurately translated into S-57. This resource is a member of https://inport.nmfs.noaa.gov/inport/item/39808

Point dataset of visitation to public coastal access sites in Narragansett Bay, Little Narragansett Bay, the Rhode Island Salt Ponds, and the Rhode Island Atlantic shore. Visits longer than 5 minutes and between the hours of 8am-6pm were tabulated for each month from July to September 2019 based on cell phone location records. Records were obtained anonymized from Airsage and corrected using observed visitation counts from Narragansett Town Beach. Site location and type attributes were based on coastal access source datasets from MA CZM, RIGIS, and CT DEEP. Point locations were derived from site polygons and do not necessarily reflect the original point location of the source datasets. Some point locations from sources were combined if they represented part of one larger site. This dataset was created as a 2021 update for the 2017 State of Narragansett Bay and Its Watershed Technical Report (nbep.org). It is intended for general planning, graphic display, and GIS analysis.

These data were automated to provide an accurate high-resolution historical shoreline of Narragansett Bay-East Passage, RI suitable as a geographic information system (GIS) data layer. These data are derived from shoreline maps that were produced by the NOAA National Ocean Service including its predecessor agencies which were based on an office interpretation of imagery and/or field survey. The NGS attribution scheme 'Coastal Cartographic Object Attribute Source Table (C-COAST)' was developed to conform the attribution of various sources of shoreline data into one attribution catalog. C-COAST is not a recognized standard, but was influenced by the International Hydrographic Organization's S-57 Object-Attribute standard so the data would be more accurately translated into S-57. This resource is a member of https://inport.nmfs.noaa.gov/inport/item/39808

This hosted feature layer has been published in RI State Plane Feet NAD 83 Landuse / landcover classification of uplands in the 500 foot buffer zone of coastal wetlands, delineated from 1996 true color aerial photography and coded according to a modified Anderson (1976) classification. Intended for use in planning for critical habitat protection, wetland restoration. For features with a minimum .5 acre resolution within 500 feet of Narragansett Bay and adjacent waters.

This hosted feature layer has been published in RI State Plane Feet NAD 83 A trend analysis of estuarine and marine wetlands in Narragansett Bay and their 500-foot upland buffer delineated from 1990s era true color aerial photography and 1950s era black and white aerial photography and coded according to U.S. Fish and Wildlife Service's Classification of Wetlands and Deepwater Habitats of the United States (Cowardin, L.M., V. Carter, F.C. Golet, and T. Laroe. 1979.(Reprinted 1992). U.S. Fish and Wildlife Service, Washington DC. FWS/OBS-79/31. 103 pp." ) and Anderson, J.R., E.E. Hardy, J.T. Roach and R.E. Witmer. 1976. A Land Use and Land Cover Classification System for Use with Remote Sensor Data. U.S. Geological Survey Professional Paper 96A. U.S. Government Printing Office, Washington, D.C. 28ppThese data identify coastal wetland and buffer zone trends including losses, gains and changes in classification in the Rhode Island portion of the Narragansett Bay Estuary and to identify these same trends in 6 pilot areas including 1930s to 1950s trends. Planning for the protection and restoration of coastal wetland and buffer zone restoration. Target minimum polygonal mapping unit was 0.25 acre for discrete coastal wetlands

Report on the RI Narragansett Bay Project Area for the trends analysis methodology.

This hosted feature layer has been published in RI State Plane Feet NAD 83.Hardened shorelines in Narragansett Bay delineated from 1996 true color aerial photography and coded according to classifications developed by NRAG and USFWS. For use in planning purposes for critical habitat protection and wetland protection.

Gravel, sand, silt, and clay contents were determined for samples from Narragansett Bay and the adjacent Rhode Island Shelf. In the Narragansett Bay system, clayey silt and sand-silt-clay are the most abundant sediments. Sand is abundant locally and on the inner shelf. In general, toward the lower passages of the Bay the sediments show a progressive change to coarser textures.

Shorelines, Other dataset current as of 1989. Rhode Island Shoreline and Islands; s44bby89; Coastal Rhode Island and Narragansett Bay with coastal ponds and coding for islands. Shoreline and islands were digitized from mylar quad maps with a digitizing tablet.

This hosted feature layer has been published in RI State Plane Feet NAD 83.Coastal Rhode Island and Narragansett Bay with coastal ponds and coding for islands.

Digital multispectral orthorectified aerial photographs encompassing Narragansett Bay, Block Island, and Rhode Island coastal areas. 1-foot pixel resolution. Capture date range: June 6 - 18, 2021. These images will be made available for traditional file download by RIGIS when resources are available. Metadata (not currently available)Web servicesArcGIS image service, WGS84 Web Mercator (EPSG 102700)ArcGIS image service, NAD83 RI State Plane feet (EPSG 3438) Tile index shapefile (not currently available)Traditional file listing (not currently available)

This geodatabase contains data from the 2017 State of Narragansett Bay and Its Watershed Technical Report (nbep.org), Chapter 7: "Wastewater Infrastructure." Sewered areas in the watersheds of Narragansett Bay, Little Narragansett Bay, and Southwest Coastal Ponds were compiled from RIGIS, CT DEEP, and a variety of different sources in Massachusetts. Analysis of onsite wastewater treatment system (OWTS) density relied on estimation based on building data outside sewered areas that were derived from E-911 Sites in Rhode Island (RIGIS) and Building Structures (2-D) in Massachusetts (MassGIS). Buildings were then used in kernel density analysis to estimate high density areas. Tables summarize the number of buildings within and outside sewered areas and the area (in acres) and percent area of sewered areas and estimated high density onsite wastewater treatment. High density areas were defined as clusters estimated to be 90 percent or higher outside of sewered areas.

Point dataset of estimated onsite wastewater treatment system locations in the watersheds of Narragansett Bay, Southwest Coastal Ponds, and Little Narragansett Bay (Rhode Island only). These data were derived from E-911 Sites in Rhode Island (RIGIS) and Building Structures (2-D) in Massachusetts (MassGIS). For more information, please reference the 2017 State of Narragansett Bay & Its Watershed Technical Report (nbep.org) or contact info@nbep.org.

Two types of SAV (eelgrass and widgeon grass) were mapped using digital 4-band (true color and infra-red) aerial photographs of Narragansett Bay, Block Island and the coastal ponds. Mapping the distribution of SAV in RI coastal waters is a critical step in understand, managing and protecting shallow-subtidal estuarine habitats. These data provide the baseline information for government agencies, town planners, and the scientific community. This report summaries the methods used, discusses the results and provides a summary of the findings. RIGIS recommends downloading this report with the Submerged Aquatic Vegetation (2016). The above text has been paraphrased from the PDF report's Introduction; please read the full report for more information.

Polygon dataset of sewered areas for Narragansett Bay Watershed, Little Narragansett Bay Watershed, and Southwest Coastal Ponds. All Rhode Island polygons were derived from 2012 Sewered Areas data downloaded from RIGIS. All Connecticut polygons were derived from Sewered Service Area data downloaded from CT DEEP. Massachusett polygons were gathered from a variety of different sources (for details, see processing steps provided in the metadata for this layer). For more information, please reference the 2017 State of Narragansett Bay & Its Watershed Technical Report (nbep.org) or contact info@nbep.org.

The Narragansett Bay Estuary Program (NBEP) analyzed open space protection as of 2015 within the boundaries of the Narragansett Bay watershed, the Southwest Coastal Ponds watershed, and the Little Narragansett Bay watershed (the portion in RI only). This dataset was created via an overlay analysis of 2015 conservation land data from Massachusetts and Rhode Island (RIDEM 2006, 2007, EOEEA 2015) and Rhode Island 2011 and Massachusetts 2005 state land use data (RIGIS 2014, MassGIS 2009). Three overarching land use categories were defined: (1) natural lands, (2) agricultural lands, and (3) recreational or other lands. State land-use classifications were used to define the type of protected open space. Natural protected open space included forest, forested and non-forested wetlands, pasture not suitable for tillage, and some additional undeveloped land uses. Agricultural protected open space included cropland, orchards, and nurseries. Recreational and other protected open space included golf courses, recreational spaces, residential land uses, cemeteries, vacant land, and other developed land uses. For a complete crosswalk of land uses, see 2017 State of Narragansett Bay & Its Watershed Technical Report (nbep.org). For more information, please reference the Technical Report or contact Julia.twichell@nbep.org.

This geodatabase contains data from the 2017 State of Narragansett Bay and Its Watershed Technical Report (nbep.org), Chapter 11: "Seagrasses." The Narragansett Bay Estuary Program compiled several temporal datasets of seagrass distribution in Narragansett Bay, Little Narragansett Bay, the Coastal Ponds, and the Sounds. A record of historical eelgrass distribution from 1840-1899 in Narragansett Bay was compiled by combining anecdotal data reporting presence or absence of seagrasses and the extent (in acres) when information was available for each segment. These data were from Kopp, B.S., A.M. Doherty, and S.W. Nixon (1995) report, "A Guide to Site Selection for Eelgrass Restoration Projects in Narragansett Bay, Rhode Island. Providence, RI: Technical Report to the RIDEM Narragansett Bay Project." Using recent Rhode Island Eelgrass Task Force (Task Force) surveys, NBEP compiled the extent of seagrasses in 2006, 2009 (Coastal Ponds only), 2012, and 2016. Data were summarized at several scales.

This excel contains data for Chapter 2 “Precipitation” of the 2017 State of Narragansett Bay & Its Watershed Technical Report (nbep.org). It includes the raw data behind Figure 1, “Annual precipitation at Providence, RI,” (page 64); Figure 2, “Annual precipitation at Worcester, MA,” (page 64); Figure 3, “Annual Palmer Drought Severity Index (PDSI) for Rhode Island,” (page 65); Figure 4, "Annual Palmer Drought Severity Index (PDSI) for Massachusetts," (page 65); Figure 5, "Climate model projection of winter total precipitation in RI or MA to 2100," (page 67); and Figure 6, "Climate model projection of winter annual snowfall in RI or MA to 2100," (page 67). For more information, please reference the Technical Report or contact info@nbep.org. Original figures are available at http://nbep.org/the-state-of-our-watershed/figures/.