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State
Surface Water Quality Polygon
State of Connecticut —
See full Data Guide here. Surface Water Quality Classifications Set: This dataset is a line and a polygon feature-based layer compiled at 1:24,000 scale that includes... -
State
Private Wells - Lithology Reports
Vermont Center for Geographic Information —
Well lithology records in this layer come from the Department of Environmental Conservation's Water Supply Data Composite. Managed by the Water Resources Section in... -
State
Public Water Sources
Vermont Center for Geographic Information —
This GIS layer consists of the geographic location of active and inactive public (Community, non-transient non-community and transient non-community) water sources... -
State
305b Assessed River 2020
State of Connecticut —
305b Assessed River, Lake, Estuary 2020: Connecticut 305b Assessed River 2020 is a 1:24,000-scale, line feature-based layer that includes rivers that have been... -
State
Ground Water Classifications Polygon
State of Connecticut —
See full Data Guide here.Ground Water Classifications Polygon: Ground Water Quality Classifications is a polygon feature-based layer compiled at 1:24,000 scale that... -
State
Water Wells
State of Oregon —
This is a hybrid of location sources for well reports (logs). There is one location for all reports, even if it is the same well (new, deepening, etc. may all be... -
State
Wastewater Districts
Vermont Center for Geographic Information —
The Wastewater districts layer is part of a larger dataset that contains administrative boundaries for Vermont's Agency of Natural Resources. The dataset includes... -
State
Impaired Estuary 2014
State of Connecticut —
Connecticut 303(d) Impaired Waters 2014 is a subset of Connecticut 305(b) Assessed Waters 2014. If any one of the assigned designated uses is categorized as NOT... -
State
305b Assessed 2012 Estuary
State of Connecticut —
305b Assessed 2012 River, Lake, Estuary set: Connecticut 305b Assessed River 2012 is a 1:24,000-scale, line feature-based layer that includes rivers that have been... -
State
Groundwater Interference
Vermont Center for Geographic Information —
"This is a searchable database representing over 40 years of hydrogeologic information based on yield testing required for new and existing public water supply... -
State
Alternative Groundwater Protection Criteria Area (GWPC)
State of Connecticut —
The Alternative GWPC layer is to be used when evaluating the Alternative GWPC provision, section 22a-133k-3(d)(2) of the RSRs, amended on February 16, 2021. This... -
State
i08 Stations Discrete Grab Water Quality
State of California —
This is a point feature class of environmental monitoring stations maintained in the California Department of Water Resources’ (hereafter the Department) Water Data... -
State
305b Assessed 2008 Estuary
State of Connecticut —
305b Assessed 2008 River, Lake, Estuary Set: Connecticut 305b Assessed River 2008 is a 1:24,000-scale, line feature-based layer that includes rivers that have been... -
State
305b Assessed 2010 River
State of Connecticut —
305b Assessed 2010 River, Lake, Estuary Set: Connecticut 305b Assessed River 2010 is a 1:24,000-scale, line feature-based layer that includes rivers that have been... -
County
Loudoun Reservoir Protection Area
Loudoun County, Virginia —
More MetadataThe Reservoir Protection Zones have been implemented to increase reservoir protection and overall drinking water quality.Reservoir Protection Zones are... -
State
Groundwater Management Area Lower Umatilla
State of Oregon —
This polygon layer contains a spatial representation of a geographic area that is designated as a Groundwater Management Area for the Lower Umatilla Basin in Oregon. -
State
Impaired Lake 2018
State of Connecticut —
Connecticut 303(d) Impaired Waters 2018 is a subset of Connecticut 305(b) Assessed Waters 2018. If any one of the assigned designated uses is categorized as NOT... -
State
CT 305b Assessed Lake 2022
State of Connecticut —
305b Assessed River, Lake, Estuary 2022: Connecticut 305b Assessed River 2022 is a 1:24,000-scale, line feature-based layer that includes rivers that have been... -
State
CT 305b Assessed River 2022
State of Connecticut —
305b Assessed River, Lake, Estuary 2022: Connecticut 305b Assessed River 2022 is a 1:24,000-scale, line feature-based layer that includes rivers that have been... -
State
Impaired Lake 2008
State of Connecticut —
Connecticut 303(d) Impaired Waters 2008 is a subset of Connecticut 305(b) Assessed Waters 2008. If any one of the assigned designated uses is categorized as NOT...