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State
Impaired 2012 River Lake Estuary Set
State of Connecticut —
Connecticut 303(d) Impaired Waters 2012 is a subset of Connecticut 305(b) Assessed Waters 2012. If any one of the assigned designated uses is categorized as NOT... -
State
305b Assessed 2012 River, Lake, Estuary Set
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
Glacial Lakes and the Champlain Sea
Vermont Center for Geographic Information —
This dataset is a compilation of glacial lake shoreline data based on surficial geologic mapping in New England and New York from 1937-2019. Data are derived from 0.7... -
County
Allegheny County Hydrology Lines
Allegheny County / City of Pittsburgh / Western PA Regional Data Center —
The Hydrology Feature Dataset contains photogrammetrically compiled water drainage features and structures including rivers, streams, drainage canals, locks, dams,... -
County
Allegheny County Hydrology Areas
Allegheny County / City of Pittsburgh / Western PA Regional Data Center —
The Hydrology Feature Dataset contains photogrammetrically compiled water drainage features and structures including rivers, streams, drainage canals, locks, dams,... -
State
12-digit HU (Subwatershed) NGDA
State of Oregon —
Abstract: This file contains Hydrologic Unit (HU) polygon boundaries for the United States, Puerto Rico, and the U.S. Virgin Islands. The data is a seamless National... -
State
Connecticut Dams - Public Use
State of Connecticut —
Connecticut Dams is a 1:24,000 scale spatial data developed for use by the Dam Safety Section of the Inland Water Resources Division, Bureau of Water Protection and... -
State
Lake Bathymetry Contours Lines
State of Connecticut —
See full Data Guide here. Lake Bathymetry describes the water depth for selected reservoirs, lakes, ponds, and coves in Connecticut. It includes depth contours, also... -
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
305b Assessed 2008 Lake
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
Recommended Fishing Lakes and Ponds
State of New York —
This data displays the locations of top lakes and ponds for fishing in New York State, as determined by fisheries biologists working for the New York State Department... -
State
6-digit HU (Basin) NGDA
State of Oregon —
Abstract: This file contains Hydrologic Unit (HU) polygon boundaries for the United States, Puerto Rico, and the U.S. Virgin Islands. The data is a seamless National... -
State
Impaired 2022 River, Lake, Estuary Set
State of Connecticut —
Connecticut 303(d) Impaired Waters 2022 is a subset of Connecticut 305(b) Assessed Waters 2022. If any one of the assigned designated uses is categorized as NOT... -
State
305b Assessed 2014 River, Lake, Estuary Set
State of Connecticut —
305b Assessed 2014 River Lake Estuary Set: Connecticut 305b Assessed River 2014 is a 1:24,000-scale, line feature-based layer that includes rivers that have been... -
State
Impaired 2018 River, Lake, Estuary Set
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
Impaired 2010 River Lake Estuary Set
State of Connecticut —
Connecticut 303(d) Impaired Waters 2010 is a subset of Connecticut 305(b) Assessed Waters 2010. If any one of the assigned designated uses is categorized as NOT... -
State
305b Assessed 2008 River, Lake, Estuary Set
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
Impaired 2006 River Lake Estuary Set
State of Connecticut —
Connecticut 303(d) Impaired Waters 2006 is a subset of Connecticut 305(b) Assessed Waters 2006. If any one of the assigned designated uses is categorized as NOT... -
State
Impaired 2020 River, Lake, Estuary Set
State of Connecticut —
Connecticut 303(d) Impaired Waters 2020 is a subset of Connecticut 305(b) Assessed Waters 2020. If any one of the assigned designated uses is categorized as NOT...