Search datasets
-
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 -
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 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: 20 | Catalog Last Checked: September 10, 2026 at 08:57 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: 19 | Catalog Last Checked: September 27, 2026 at 12:11 AM -
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. This file (SWSUB8) is a statewide digital watershed file. It depicts the State with 138 separate...
Search relevance: 1.00 | Views last month: 15 | Catalog Last Checked: September 10, 2026 at 06:46 PM -
These map layers present the number of National Green Building Standard points awarded for a project site or lot’s relative walkability, and accessibility to jobs via transit or within a 45-minute...
Search relevance: 1.00 | Views last month: 14 | Catalog Last Checked: August 03, 2026 at 04:48 AM -
Enforcement and Compliance Information Center - ECIC is a repository of external policy and guidance documents, links to cases and settlements, civil and criminal complaints that are reviewed by...
Search relevance: 1.00 | Views last month: 11 | Catalog Last Checked: September 10, 2026 at 07:10 PM -
This metadata report documents a shapefile of watershed boundaries for 84 selected United States Geological Survey (USGS) water quality stations that are part of the Chesapeake Bay non-tidal network (NTN).
Search relevance: 1.00 | Views last month: 11 | Catalog Last Checked: September 10, 2026 at 09:56 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: 10 | Catalog Last Checked: August 03, 2026 at 04:44 AM -
This metadata record documents 2 comma delimited tables representing output from the Chesapeake Bay Program Phase 5.3.2 Watershed Model. The effect of best management practices (BMP) in 2014 in...
Search relevance: 1.00 | Views last month: 10 | Catalog Last Checked: September 10, 2026 at 08:35 PM -
This data set includes information pertaining to 300 bivalve mollusk tissue samples collected from mollusk specimens from waters in eastern Maryland on the Delmarva Peninsula. Data includes...
Search relevance: 1.00 | Views last month: 8 | Catalog Last Checked: September 10, 2026 at 09:03 PM -
This dataset contains discrete water sample and physiological data from a laboratory experiment that took place July 26 - September 12, 2019 to observe how ocean acidification might impact the...
Search relevance: 1.00 | Views last month: 8 | Catalog Last Checked: September 26, 2026 at 09:56 PM -
The Deal Island beneficial use project involved raising the marsh platform's elevation using dredged material from the lower Wicomico River. NCCOS researchers conducted intensive data collection...
Search relevance: 1.00 | Views last month: 8 | Catalog Last Checked: September 26, 2026 at 10:04 PM -
The U.S. Geological Survey has been characterizing the regional variation in shear stress on the sea floor and sediment mobility through statistical descriptors. The purpose of this project is to...
Search relevance: 1.00 | Views last month: 8 | Catalog Last Checked: September 10, 2026 at 07:51 PM -
This study was based on the sediment quality triad (SQT) approach. A stratified probabilistic sampling design was utilized to characterize the Chesapeake Bay system in terms of chemical...
Search relevance: 1.00 | Views last month: 7 | Catalog Last Checked: August 02, 2026 at 04:57 PM -
The shoreline and littoral conditions maps were produced in 1982 as part of a study of shore erosion in the northern Chesapeake Bay, that is, the Maryland part of the Bay (Wang et al, 1982). In...
Search relevance: 1.00 | Views last month: 7 | Catalog Last Checked: September 10, 2026 at 06:50 PM -
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. This file (SWSHED12) is a statewide digital watershed file. It was created primarily for state and...
Search relevance: 1.00 | Views last month: 7 | Catalog Last Checked: September 10, 2026 at 06:50 PM -
This data set represents the extent, approximate location and type of wetlands and deepwater habitats in the conterminous United States. These data delineate the areal extent of wetlands and...
Search relevance: 1.00 | Views last month: 6 | Catalog Last Checked: September 10, 2026 at 06:46 PM -
This web service contains the following state level layers:Ozone 8-hr (1997 standard), Ozone 8-hr (2008 standard), Lead (2008 standard), SO2 1-hr (2010 standard), PM2.5 24hr (2006 standard), PM2.5...
Search relevance: 1.00 | Views last month: 6 | Catalog Last Checked: August 03, 2026 at 04:44 AM -
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. As a member of the Mid-Atlantic Regional Council on the Ocean (MARCO) - Maryland - through its Coastal...
Search relevance: 1.00 | Views last month: 5 | Catalog Last Checked: September 10, 2026 at 06:48 PM
