 | 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). |  |  | 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.) | | | 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) | | | 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. | | | 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. |  | | 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. | | | 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. | | | 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. | | | lakes5k_e00.zip (3.6 MB) E00;
lakes5k_shp.zip (3.2 MB) SHP |
 | Major Rivers and Streams
(RI Water Quality Standards & Impairments - 305b/303d for Freshwater Rivers & Streams 2006) | River and Stream Centerline aerial features derived from the RIGIS 1:24000 mapping of RI Inland Waters, with attribute coding for Water Quality Standards (305b) and Impairments (303d), and Special Resource Protection Waters. | | | FWStream24.zip (1.6 MB) SHP |
 | Major Surface Water Bodies
(RI Water Quality Standards & Impairments - 305b/303d for Freshwater Lakes & Ponds 2006) | Lake, Pond and Reservoir polygons (2D or aerial features) derived from the RIGIS 1:24000 mapping of RI Inland Waters, with attribute coding for Water Quality Standards (305b) and Impairments (303d), and Special Resource Protection Waters. | | | FWPond24.zip (1.6 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) | | | s44hwb05.zip (0.1 MB) E00;
ncwhpa05.zip (0.1 MB) SHP |
 | NRCS HUC 12 Drainage Basins for New England | Surface water drainage basins with NRCS hydrologic unit coding (huc12) for all rivers and streams in southeastern New England entering Narragansett Bay and coastal waters of RI. | | | senehuc_shp.zip (2.8 MB) SHP |
 | NRCS HUC 12 Drainage Basins for RI | Surface water drainage basins with NRCS hydrologic unit coding (huc12) for all of Rhode Island. | | | dbasin12_e00.zip (1.3 MB) E00;
dbasin12_shp.zip (1.7 MB) SHP |
 | Ponds (1:5000) | Lakes and ponds in Rhode Island derived from the 1997 National Grid_USA/RIDOT Orthophoto Project. | | | ponds5k_e00.zip (4.7 MB) E00;
ponds5k_shp.zip (3.1 MB) SHP |
 | Public Water Supply Reservoirs | Surface reservoirs used as sources for public drinking water supplies. | | | s44hpr94.zip (0.1 MB) E00;
reservoirs.zip (0.1 MB) SHP |
 | Sole Source Aquifers | Areas in RI and nearby CT designated as sole source aquifers by the U.S. EPA. | | | 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. | | | streams5k.zip (7 MB) SHP |
 | Surface Water Drainage Basins | Surface water drainage basins and sub-basins in RI
(Also included in s44hsb90). | | | 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. | | | swatpa_e00.zip (0.2 MB) E00;
swatpa_shp.zip (0.2 MB) SHP |
