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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
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
Oregon Ecoregions
State of Oregon —
This data layer is an element of the Oregon GIS Framework. Ecoregions denote areas of general similarity in ecosystems and in the type quality, and quantity of... -
State
Air Quality Maintenance Area Carbon Monoxide
State of Oregon —
This polygon layer contains a spatial representation of geographic areas that are designated as Air Quality Maintenance Areas and Nonattainment Areas for the criteria... -
State
Air Quality Maintenance Area Particulate Matter
State of Oregon —
This polygon layer contains a spatial representation of geographic areas that are designated as Air Quality Maintenance Areas and Nonattainment Areas for the criteria... -
State
Surface Water Quality Classifications Set
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
Air Quality Maintenance Area Ozone
State of Oregon —
This polygon layer contains a spatial representation of geographic areas that are designated as Air Quality Maintenance Areas and Nonattainment Areas for the criteria... -
State
Surface Water Quality Lines
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
Surface Water Quality Assessments
State of Maryland —
This is the 2014 Integrated Report. EPA approved this submission in accordance with Sections 303(d), 305(b), and 314(l) of the Clean Water Act, on October 16, 2015....