 | Community Wellhead Protection Areas | Areas around public community wells considered critical for the protection of their source water supplies
(Polygon areas shown in Groundwater Classification). |
| 06/2005 |
|
s44hwa05.zip (0.2 MB) E00;
cwhpa05.zip (0.1 MB) SHP
|
 | Groundwater Classification | Groundwater quality classification for major aquifers, public well head areas and other subsurface resources.
(Aquifers include those polygon areas shown in Groundwater Recharge Areas, Community Wellhead Protection Areas, and Non-community Wellhead Protection Areas.) |
| 05/2005 |
|
gwclass06.zip (1.0 MB) SHP
|
 | Groundwater Recharge Areas | Critical portions of recharge areas for major RI groundwater aquifers suitable as sources for untreated drinking water
(Also included in Groundwater Classification) |
| 06/2005 |
|
s44hgg05.zip (0.2 MB) E00;
gwrechrg05.zip (0.1 MB) SHP
|
 | Groundwater Reservoir | Major groundwater reservoirs for aquifers classified as GAA or GB by RIDEM. |
| 03/1989 |
|
s44hgr89.zip (0.1 MB) E00;
gwatresv.zip (0.1 MB) SHP
|
 | Hydrolines | Centerlines for all fresh water rivers and streams including some seasonal streams in RI. |
| 06/1998 |
|
s44hhl98.zip (1.1 MB) E00;
streams.zip (1.0 MB) SHP
|
 | Hydrolines (perennial & intermittent) | Centerlines of perennial and intermittent streams with widths less than 20 feet from 1988 photography used in developing the RIGIS wetlands data set. |
| 08/1990 |
|
s44hst90.zip (1.1 MB) E00
|
 | Lakes and Ponds | All freshwater lakes, ponds and reservoirs including delineation of major rivers wide enough to be represented as polygon areas on USGS 7.5 minute quad maps. |
| 12/1989 |
|
s44hhp88.zip (2.1 MB) E00;
ponds.zip (1.4 MB) SHP
|
 | Lakes and Ponds (1:5000) | Major lakes and ponds with name attributes; based on 1997 1:5000 photography. |
| 2002 |
|
lakes5k_e00.zip (3.6 MB) E00;
lakes5k_shp.zip (3.2 MB) SHP
|
 | Lakes, Ponds, and Reservoirs: RI Integrated Water Quality Monitoring and Assessment Report 2008 | Vector polygon data representing Rhode Island Lakes, Ponds and Reservoirs included in the State's Integrated Water Quality and Assessment Report required under provisions of the US Clean Water Act. |
| 09/2008 |
|
ponds_IWQMA_08.zip (0.9 MB) SHP
|
 | Non-Community Well Head Protection Areas | Areas around public non-community wells considered critical for the protection of their source water supplies
(Polygon areas shown in Groundwater Classification) |
| 06/2005 |
|
s44hwb05.zip (0.1 MB) E00;
ncwhpa05.zip (0.1 MB) SHP
|
 | Public Water Supply Reservoirs | Surface reservoirs used as sources for public drinking water supplies. |
| 01/1994 |
|
s44hpr94.zip (0.1 MB) E00;
reservoirs.zip (0.1 MB) SHP
|
 | Rivers and Streams: RI Integrated Water Quality Monitoring and Assessment Report 2008 | Vector line data representing Rhode Island Rivers and Streams included in the State's Integrated Water Quality and Assessment Report required under provisions of the US Clean Water Act. |
| 09/2008 |
|
streams_IWQMA_08.zip (1.6 MB) SHP
|
 | Sole Source Aquifers | Areas in RI and nearby CT designated as sole source aquifers by the U.S. EPA. |
| 06/1992 |
|
s44hss92.zip (0.1 MB) E00;
solsourc.zip (0.1 MB) SHP
|
 | Streams (1:5000) | Rivers and streams in Rhode Island derived from the 1997 National Grid_USA/RIDOT Orthophoto Project. Updated to inclulde Strahler stream ordering encoded by RIDEM. |
| 06/2001 |
|
streams5k.zip (7 MB) SHP
|
 | Surface Water Drainage Basins | Surface water drainage basins and sub-basins in RI
(Also included in s44hsb90). |
| 05/1990 |
|
s44hdb90.zip (0.6 MB) E00;
basins.zip (0.6 MB) SHP
|
 | Surface Water Protection Areas | Designated protection areas around surface water bodies used as public drinking water sources. |
| 04/2002 |
|
swatpa_e00.zip (0.2 MB) E00;
swatpa_shp.zip (0.2 MB) SHP
|
 | Watershed Boundary Dataset | Hydrologic unit boundary data for the Subwatershed (12-digit) 6th level for Rhode Island from the USDA Natural Resources Conservation Service. These data have been modified to include watershed names used locally in Rhode Island. |
| 01/2009 |
|
HUC12_RI_09.zip (1.3 MB) SHP
|
