Search datasets
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Geographic Names Information System (GNIS) - USGS National Map Downloadable Data Collection Trending
The Geographic Names Information System (GNIS) is the Federal standard for geographic nomenclature. The U.S. Geological Survey developed the GNIS for the U.S. Board on Geographic Names, a Federal...
Search relevance: 1.00 | Views last month: 103 | Catalog Last Checked: August 01, 2026 at 05:18 AM -
This dataset shows the temporal frequency and spatial extent of cyanobacteria cells in large, freshwater lakes and reservoirs across the continental United States derived from 300x300 meter MEdium...
Search relevance: 1.00 | Views last month: 89 | Catalog Last Checked: August 03, 2026 at 04:16 AM -
The Walkability Index dataset characterizes every Census 2019 block group in the U.S. based on its relative walkability. Walkability depends upon characteristics of the built environment that...
Search relevance: 1.00 | Views last month: 58 | Catalog Last Checked: August 03, 2026 at 04:49 AM -
SEER Limited-Use cancer incidence data with associated population data. Geographic areas available are county and SEER registry. The Surveillance, Epidemiology, and End Results (SEER) Program of...
Search relevance: 1.00 | Views last month: 45 | Catalog Last Checked: July 31, 2026 at 09:35 PM -
This web feature service contains location and facility identification information from EPA's Facility Registry System (FRS) for the subset of facilities that link to the Toxic Substances Control...
Search relevance: 1.00 | Views last month: 45 | Catalog Last Checked: September 08, 2026 at 07:26 PM -
The USGS compiles online access to water-resources data collected at approximately 1.5 million sites in all 50 States, the District of Columbia, Puerto Rico, the Virgin Islands, Guam, American...
Search relevance: 1.00 | Views last month: 43 | Catalog Last Checked: August 01, 2026 at 06:20 AM -
This web service depicts nearly 17,000 neighborhood boundaries in over 650 U.S. cities. Zillow created the neighborhood boundaries and is sharing them with the public under a Creative Commons...
Search relevance: 1.00 | Views last month: 32 | Catalog Last Checked: August 03, 2026 at 04:45 AM -
This dataset, termed "GAGES II", an acronym for Geospatial Attributes of Gages for Evaluating Streamflow, version II, provides geospatial data and classifications for 9,322 stream gages...
Search relevance: 1.00 | Views last month: 31 | Catalog Last Checked: August 31, 2026 at 05:56 PM -
Contours are lines of equal elevation. This is a contour feature layer for the state of Connecticut derived from the index contour in the 1' contour data set. All closed polygons less than 35'...
Search relevance: 1.00 | Views last month: 31 | Catalog Last Checked: August 02, 2026 at 05:29 PM -
Due to the recognized proliferation and spread of antibiotic resistance genes by anthropogenic use of antibiotics for human, agriculture and aquaculture purposes, antibiotic resistance genes have...
Search relevance: 1.00 | Views last month: 28 | Catalog Last Checked: August 01, 2026 at 06:20 AM -
This GIS dataset contains points which depict air quality monitors within EPA's Air Quality System (AQS) monitoring network. This dataset is updated weekly to reflect the most recent changes in...
Search relevance: 1.00 | Views last month: 27 | Catalog Last Checked: August 03, 2026 at 04:43 AM -
This feature layer represents the boundaries of Connecticut's Senate districts based on the latest redistricting process following the 2020 Census. More information about the 2021 Redistricting...
Search relevance: 1.00 | Views last month: 27 | Catalog Last Checked: August 02, 2026 at 05:28 PM -
The U.S. Geological Survey's National Water-Use Information Program is responsible for compiling and disseminating the nation's water-use data. The USGS works in cooperation with local, State,...
Search relevance: 1.00 | Views last month: 23 | Catalog Last Checked: August 01, 2026 at 04:57 AM -
The U.S. Geological Survey (USGS), in cooperation with the National Oceanic and Atmospheric Administration (NOAA) and the Connecticut Department of Energy and Environmental Protection (CT DEEP),...
Search relevance: 1.00 | Views last month: 22 | Catalog Last Checked: August 01, 2026 at 06:20 AM -
This feature layer represents the boundaries of Connecticut's House of Representative’s districts based on the latest redistricting process following the 2020 Census. More information about the...
Search relevance: 1.00 | Views last month: 22 | Catalog Last Checked: August 02, 2026 at 05:29 PM -
Contours are lines of equal elevation. This is a contour feature layer for the state of Connecticut derived from the index contour in the 1' contour data set. All closed polygons less than 35'...
Search relevance: 1.00 | Views last month: 22 | Catalog Last Checked: August 02, 2026 at 05:26 PM -
This EnviroAtlas web service supports research and online mapping activities related to EnviroAtlas (https://www.epa.gov/enviroatlas). This EnviroAtlas dataset describes the percentage of a 15-m...
Search relevance: 1.00 | Views last month: 20 | Catalog Last Checked: May 06, 2026 at 12:20 AM -
A series of three-dimensional, hypothetical, groundwater models (MODFLOW-NWT) were developed to investigate the effects of a variety of factors on the flow of arsenic-containing water into a...
Search relevance: 1.00 | Views last month: 20 | Catalog Last Checked: August 01, 2026 at 05:24 AM -
Contours are lines of equal elevation. This is a contour feature layer for the state of Connecticut derived from the index contour in the 1' contour data set. All closed polygons less than 35'...
Search relevance: 1.00 | Views last month: 19 | Catalog Last Checked: August 02, 2026 at 05:27 PM -
This component data layer (_CMP.txt) file gives information about selected components (minerals, rock type, microfossils, benthic biota) and seafloor features (bioturbation, structure, ripples) at...
Search relevance: 1.00 | Views last month: 18 | Catalog Last Checked: August 01, 2026 at 05:59 AM
