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Administered by the U.S. Geological Survey Gap Analysis Project, the Protected Areas Database of the United States (PAD-US) is the nation’s official inventory of public open space and private protected areas. The lands included in PAD-US are assigned conservation status codes that both denote the level of biodiversity preservation and indicate other natural, recreational and cultural uses.

USGS Pennsylvania Water Science Center, in cooperation with the Pennsylvania Department of Environmental Protection, samples 28 wells biannually to monitor ambient groundwater quality conditions in a variety of settings throughout Pennsylvania. The most recent results for selected constituents can be accessed through the Groundwater Quality Monitoring Network Data Exploration Tool.

Pennsylvania Groundwater Watch provides access to groundwater level data from 108 sites in the USGS Active Groundwater Level Network for Adams, Chester, Montgomery, Philadelphia, and Pike Counties.

Real-time computed concentrations of water-quality constituents such as suspended sediment and fecal coliform bacteria are calculated using ordinary least squares regression models. The results of these models, along with direct water-quality measurements, can be viewed here as time-series graphs, or downloaded as tabular data.

Since 1993, the CO Water Science Center has been collecting a composite sample of the chemistry of most of the annual precipitation at high elevations [> 1,800 meters], in an effort to determine annual concentrations and depositional amounts of selected nutrients and other constituents in snow. This data is provided here via an interactive map with available data and charts by site.

The USGS Science Data Catalog provides seamless access to USGS research and monitoring data from across the nation. Users have the ability to search, browse, or use a map-based interface to discover data.

ScienceBase is data and information management infrastructure that enables data upload, documentation, sharing, and dynamic data services using standards-compliant methods and technological components. ScienceBase furnishes a foundation for data stewardship, government open data, and scientific discovery.

The ScienceBase Data Release (SBDR) Summary Dashboard aggregates information about USGS's ScienceBase data releases, including the number of data releases by Mission Area, Region, and Science Center. It allows users to filter data release metrics by Science Center and date range and download a CSV

The ScienceBase Data Release (SBDR) Tool allows users to create a ScienceBase landing page and reserve a digital object identifier (DOI) for their data release by completing a simple form.

Find past earthquakes and earthquake lists from specific locations and time windows. Results available in a variety of formats.

Web services produced by the U.S. Geological Survey for calculating parameter values from various seismic design reference documents.

Real-time seismograms from Global Seismographic Network (GSN) and Advanced National Seismic System (ANSS) stations, and station information for both.