Found 2532 datasets matching filters. (clear all filters)
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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: 315 | Catalog Last Checked: May 05, 2026 at 09:23 PM -
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: 180 | Catalog Last Checked: May 06, 2026 at 12:31 AM -
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: 161 | Catalog Last Checked: May 05, 2026 at 10:20 PM -
This sediment database contains location, description, and texture of samples taken by numerous marine sampling programs. Most of the samples are from the Atlantic Continental Margin of the...
Search relevance: 1.00 | Views last month: 150 | Catalog Last Checked: May 05, 2026 at 08:32 PM -
This web service layer, Ozone 8-hr (2015 standard), displays identified state level areas where ground-level ozone have not met the National Ambient Air Quality Standards (NAAQS) established in...
Search relevance: 1.00 | Views last month: 114 | Catalog Last Checked: May 06, 2026 at 12:32 AM -
This dataset provides national scale location information for known, publicly available, data on helium gas concentrations, reported in mol%. The dataset was created as part of the effort by the...
Search relevance: 1.00 | Views last month: 112 | Catalog Last Checked: May 05, 2026 at 08:07 PM -
Note: Starting October 10th, 2025 this dataset is deprecated and is no longer being updated. As of April 27, 2023 updates changed from daily to weekly. Summary The cumulative number of positive...
Search relevance: 1.00 | Views last month: 86 | Catalog Last Checked: May 14, 2026 at 11:57 PM -
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. This layer contains the boundaries and IDs of the Maryland tax maps produced by Maryland Department of...
Search relevance: 1.00 | Views last month: 79 | Catalog Last Checked: August 02, 2025 at 04:49 AM -
Updated daily postings on Montgomery County’s open data website, dataMontgomery, provide the public with direct access to crime statistic databases - including raw data and search functions – of...
Search relevance: 1.00 | Views last month: 69 | Catalog Last Checked: June 02, 2026 at 06:32 PM -
The 2018 Update of the U.S. National Seismic Hazard Model defines the potential for earthquake ground shaking for various probability levels across the conterminous United States and is applied in...
Search relevance: 1.00 | Views last month: 68 | Catalog Last Checked: May 05, 2026 at 07:59 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: 67 | Catalog Last Checked: May 05, 2026 at 08:58 PM -
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: 56 | Catalog Last Checked: May 06, 2026 at 12:02 AM -
Note: Note: Starting October 10th, 2025 this dataset is deprecated and is no longer being updated. As of April 27, 2023 updates changed from daily to weekly. Summary The cumulative number of...
Search relevance: 1.00 | Views last month: 55 | Catalog Last Checked: May 14, 2026 at 11:57 PM -
Note: Note: Starting October 10th, 2025 this dataset is deprecated and is no longer being updated. As of April 27, 2023 updates changed from daily to weekly. Summary The cumulative number of...
Search relevance: 1.00 | Views last month: 51 | Catalog Last Checked: May 14, 2026 at 11:56 PM -
The NOAA National Estuarine Research Reserve (NERR) System-wide Monitoring Program (SWMP) collects meteorological, water quality, and nutrient/pigment data on an ongoing basis. Meteorological...
Search relevance: 1.00 | Views last month: 50 | Catalog Last Checked: May 29, 2026 at 11:02 PM -
Note: Note: Starting October 10th, 2025 this dataset is deprecated and is no longer being updated. As of April 27, 2023 updates changed from daily to weekly. Summary The cumulative number of...
Search relevance: 1.00 | Views last month: 47 | Catalog Last Checked: May 14, 2026 at 11:57 PM -
These data represent the first ten years of data collection (2007-2016) on avian abundance/density and distribution in the National Capital Region as part of the Inventory and Monitoring Program....
Search relevance: 1.00 | Views last month: 44 | Catalog Last Checked: January 25, 2026 at 05:24 PM -
This sediment database contains location, description, and texture of samples taken by numerous marine sampling programs. Most of the samples are from the Atlantic Continental Margin of the...
Search relevance: 1.00 | Views last month: 36 | Catalog Last Checked: May 05, 2026 at 08:43 PM -
This U.S. Geological Survey data release contains datasets that combine past data with future projections of nitrogen sources and nitrogen export to the Chesapeake Bay watershed for the years...
Search relevance: 1.00 | Views last month: 35 | Catalog Last Checked: May 05, 2026 at 08:22 PM -
WHISPers stands for Wildlife Health Information Sharing Partnership - event reporting system. It is a web-based repository for sharing basic information about historic and ongoing wildlife...
Search relevance: 1.00 | Views last month: 32 | Catalog Last Checked: May 05, 2026 at 09:49 PM
