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GIS DATA LAYERS

There are 14 eelgrass data layers from several sources and each has been categorized as either "Current" (generated after 1992) or "Historical" (generated before 1992) data. They are also projected into RI State Plane Feet NAD83. Below is the name of the data layer as it appears on the maps, a link to its metadata, a description of the layer and its source, and a link to download its file. At the bottom of this page is a list of other data used in the project and links to their files and/or metadata.

Data Layer

Metadata

Description

Files

Current URI/NRS Eelgrass Polygons

Metadata

2000 URI Natural Resources Science field data and aerial interpretation of Ninigret Pond.

ninigret.e00 (7 kb) e00 urinrs_shp.zip (6 kb) shp

Data Layer

Metadata

Description

Files

Current URI/GSO Ninigret Pond Eelgrass Densities

Metadata

2000 URI Graduate School of Oceanography interpolated grid data of Ninigret Pond.

ninigrid_shp.zip (264 kb) shp

Current URI/GSO Quonochontaug Pond Eelgrass Densities

Metadata

2000 URI Graduate School of Oceanography interpolated grid data of Quonochontaug Pond

quonniegrid_shp.zip (23 kb) shp

Data Layer

Metadata

Description

Files

Current URI/GSO Quonochontaug Pond Eelgrass Polygons

Metadata

2000 URI Graduate School of Oceanography general eelgrass survey of Quonochontaug Pond. Not geographically referenced; extents are only approximations.

fordpolys_shp.zip (6 kb) shp

Data Layer

Metadata

Description

Files

Current CRMC Eelgrass Polygons

Metadata

1999-2000 CRMC & RIDEM shoreline eelgrass survey.

crmcpolys_shp.zip (2 kb) shp

Current CRMC Eelgrass Lines

Metadata

1999-2000 CRMC & RIDEM shoreline eelgrass survey.

crmclines_shp.zip (10 kb) shp

Current CRMC Eelgrass Points

Metadata

1999-2000 CRMC & RIDEM shoreline eelgrass survey.

crmcpts_shp.zip (2 kb) shp

Current Block Island Eelgrass Lines

Metadata

1999-2000 CRMC & RIDEM shoreline eelgrass survey.

crmcbi_shp.zip (6 kb) shp

Data Layer

Metadata

Description

Files

Current RIDEM/F&W Eelgrass Points

Metadata

1999-2000 RI DEM Department of Fish & Wildlife eelgrass points taken from field observations in Narragansett Bay. Not geographically referenced; extents are only approximations.

dfwpts.e00 (26 kb) e00

Data Layer

Metadata

Description

Files

Current NBEP Eelgrass Polygons

Metadata

1996 Narragansett Bay Estuary Program polygon data from 1996 true color aerial photography delineation. Synonymous with RIGIS data.

nbeppolys_shp.zip (17kb) shp

Current NBEP Eelgrass Lines

Metadata

1996 Narragansett Bay Estuary Program line data from 1996 true color aerial photography delineation. Synonymous with RIGIS data.

nbeplines_shp.zip(2kb) shp

Data Layer

Metadata

Description

Files

Historical NBP Eelgrass Polygons

Metadata

1988 Narragansett Bay Project polygon data from 1988 aerial photography delineation.

Narrbayproj_shp.zip (32 kb) shp

Data Layer

Metadata

Description

Files

Historical RIAF Eelgrass Points

Metadata

1848-1994 Rhode Island Aqua Fund historical point data. Collected from personal accounts (P), herbarium specimens (H), literature review (L), or NOAA charts (C).

riafpts_shp.zip (12 kb) shp

Historical RIAF Eelgrass Polygons

Metadata

1848-1994 Rhode Island Aqua Fund historical polygon data. Collected from personal accounts (P), herbarium specimens (H), literature review (L), or NOAA charts (C).

FILE

The following layers are also included for reference: