RIGIS: Elevation and Derived Products

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Elevation and Derived Products

name

description

type

metadata

download

Bathymetry

Bathymetric depth contours for Narragansett Bay and Block Island sound at twenty foot intervals as depicted on NOAA nautical charts.

s44hby97.zip (1.5 MB) E00;
bathymet.zip (1.6 MB) SHP

Benchmarks

Monumented vertical control benchmarks with elevation from geodetic survey control data set.

s44vbm95.zip (0.1 MB) E00;
bench95.zip (0.1 MB) SHP

Geodetic Survey Points

Geodetic survey horizontal and vertical monumented control points from the National Geodetic Reference System and RI control bases including elevation bench marks and point coordinates.

s44bgc95.zip (0.1 MB) E00;
geod95.zip (0.2 MB) SHP

Statewide Digital Terrain Model

Digital Terrain Model derived from the 1997 National Grid USA/RIDOT Digital Orthophoto Project. (Metadata are being updated and will be posted Spring 2007).

Please refer to the RIGIS Elevation CD.

Statewide Elevation Model (1:250000)

1:250,000 scale USGS Digital Elevation Model clipped to state boundary at 100 meter pixel resolution. (No metadata available at this time.)

s44dem.zip (0.3 MB) DEM

USGS Digital Line Graphs

1:100,000 USGS Hypsography Dataset 10 Meter Elevation Contour Lines for Rhode Island & Nearby Massachussetts & Connecticut within the boundaries of the 1:100,000 Quadrangles for BOSTON, PROVIDENCE, BLOCK ISLAND

100k_contours.zip (18.4 MB) SHP

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