GIS Data - Data and Tools

Domestic wells provide drinking water supply for approximately 40 million people in the United States. Knowing the location of these wells, and the populations they serve, is important for identifying heavily used aquifers, locations susceptible to contamination, and populations potentially impacted by poor-quality groundwater.Get price

GIS - The Importance of Quality Data

quality data is not widely understood. Poor quality data can be a frustration, an impediment, or even a danger to the utility and its staff .” While the actual cost of poor GIS data quality is elusive, the cost to improve the data quality is a known quantity. However, according to the report, data improvement can be a lengthy and expansiveGet price

Geographic Information Systems (GIS) | Earthdata

Apr 19, 2021 · GIS allows you to link databases with maps to create dynamic displays. Remote sensing, the art and science of making measurements of the Earth using airborne- or satellite-based sensors, is used in GIS. Remotely sensed data, integrated within a GIS, can be visualized to obtain information about the data; and a GIS provides specializedGet price

Geographic Information Systems (GIS) Mapping Tools

Geographic Information Systems (GIS) Mapping Tools Open Data Portal. PA DEPGIS open data portal provides access to all of our publicly published, non-sensitive GIS data, which includes over 300 data layers relative to abandoned mine lands, air quality, water pollution control, coal mining, hazardous waste, operations, oil gas, streams and lakes, industrial minerals mining, integratedGet price

Tools and Data - GIS, Cartography Mapping (U.S. National

Live Weather and Air Quality Data: Explore park and park sponsored monitoring locations. NPGallery : A comprehensive library of NPS images, video, audio, maps, presentations, documents and more. NPS Story Map Gallery : Story maps combine spatial data with multimedia content (such as text, photos, video, and audio) into an tailored user experience.Get price

GIS - National Weather Service

Many of the National Weather Service data sets are available in formats that are able to be imported directly into Geographic Information Systems (GIS) or your own custom map viewers or web pages. Data formats include downloadable shapefiles and KML formats , web services , and our basemaps in shapefile format.Get price

Overview - Maps - USGS

The GAMA-PBP Public-Supply Well Results data viewer allows the user to visualize and download California water-quality data and trends for1974 - 2014. Groundwater-quality data for 38 inorganic constituents are captured and can be downloaded for individual sites or by grid cell.Get price

Scale of measurement - GIS Wiki | The GIS Encyclopedia

Sep 10, 2018 · Stevens' Scales of Measurement or level of measurement is a system for classifying attribute data into four categories, developed by psychologist Stanley Smith Stevens and first published in 1946. [1] [2] Stevens called his four scales nominal , ordinal , interval , and ratio , so the system is often called "NOIR."Get price

GIS Data Center - Mecklenburg County Government

Mecklenburg County GIS hosts an Open Data Portal called Open Mapping in which the public can browse for and download GIS Mapping layers called shapefiles (zipped) for personal use. Please note: Shapefiles are comprised of multiple files. The DBF file of a shapefile can be loaded into excel and viewed if map data viewing capabilities are not needed.Get price

Access GIS Data Viewer | Guilford County, NC

GIS site updates; 5/1/20 – Completed the installation of our Enterprise Architecture.. 6/6/2019 – Added 2018 Orthoimagery to the site. Please click here for more information.Get price

Measurement - GIS Wiki | The GIS Encyclopedia

HistoryStandardsUnits and SystemsSome Special NamesDifficultiesDefinitions and Theoriesin PhysicsReferencesExternal LinksThe word "measurement" is derived from the Greek word "metron"which means a limited proportion. The history of measurements is a topic within the history of science and technology.Get price

Geographic Information System - US Army Environmental Command

USAEC GIS Support. In addition to the GIS initiatives managed by USAEC, the GIS team supports USAEC and the Army community by providing technical consultation, performing geospatial data analyses, reviewing contract language for GIS-related work, providing training to Project Managers on the principles of GIS, and creating professional cartographic products.Get price

USGS Water Resources: About USGS Water Resources

Some areas, notably major cities in the west, were recompiled at a scale of 1:100K. The coverage was compiled to provide the National Water Quality Assessment (NAWQA) study units with an intermediate- scale river basin boundary for extracting other GIS data layers. The coverage is available on line, at no charge, via links from the file.Get price

Geographic Information Systems Datasets

Introduction "To provide support for local jurisdictions and developers in their efforts to work with the U.S. military to complete Joint Land Use Studies and other development efforts on / around DoD lands, the following webpage provides links to GIS (Geographic Information Systems) datasets and online resources from which to download useful, planning-based geospatial data for further analysis."Get price

King County GIS Center - King County

Mar 26, 2020 · The King County GIS Center manages the King County Geographic Information System (KCGIS), King County’s cooperative, multi-department, enterprise GIS. We provide efficient, high-quality GIS leadership, coordination, infrastructure, and services to meet the business needs of our customers and clients in King County government, the Puget SoundGet price

qgis - USA map projection - Geographic Information Systems

So I tried different projections, including EPSG:102003 USA_Contiguous_Albers_Equal_Area_Conic, EPSG:102004 USA_Contiguous_Lambert_Conformal_Conic and EPSG:102005 USA_Contiguous_Equidistant_Conic, but the map still looks very squished. I re-wrote the projection file with .txt extension and opened and read it. It showedGet price

Wind Resource Data, Tools, and Maps | Geospatial Data - NREL

Wind Resource MapsWind Resource Geospatial DataCite The Maps and DataThese static maps illustrate multiyear average wind speeds at various heights derived from NRELWIND Toolkit. They may be used in electronic and printed publications with proper citation. Note: The publication dates listed below don't necessarily reflect the publication dates of the data therein.Get price

EPA Geospatial Applications | US EPA

Sep 18, 2020 · This website provides access to outdoor air quality data collected from state, local and tribal monitoring agencies across the United States. AirNow - AirNow provides current, historical and forecast air quality maps and data for more than 500 cities across the U.S., Canada and Mexico using the Air Quality Index (AQI), a color-coded indexGet price

Lesson 7 - Understanding GIS Error, Accuracy, and Precision

One of the feature benefits of GIS is the ability to use information from many sources, so the need to have an understanding of the quality of the data is extremely important. Accuracy in GIS is the degree to which information on a map matches real-world values.Get price

GIS Mapping Applications - Yavapai County, Arizona

11x11 inches, February 2020. For help with any of these Mapping Applications, please visit the GIS Mapping Application FAQ’s page. Contact Us: Email us at [email protected] or call weekdays 8 am to 5 pm except holidays at 928-771-3169 (in Prescott).Get price

GIS Data Quality Assessment - 1 Survey

Qualitative Assessment of the Impact of GIS Data Quality The questions below represent the first step of a two step process to quantify the effects of bad GIS data. It is expected that by quantifying the impact of bad data, utilities will be able to cost-justify data improvement projects.Get price

GIS (Geographic Information System) | National Geographic Society

Jun 21, 2017 · A geographic information system (GIS) is a computer system for capturing, storing, checking, and displaying data related to positions on Earth’s surface. By relating seemingly unrelated data, GIS can help individuals and organizations better understand spatial patterns and relationships.Get price

USGS Groundwater Data for the Nation

Measurements are commonly recorded at a fixed interval of 15- to 60-minutes and transmitted to the USGS every hour. Values may include "Approved" (quality-assured data that may be published) and/or more recent "Provisional" data (of unverified accuracy and subject to revision). Most current data are provisional.Get price

Air Data: Air Quality Data Collected at Outdoor - US EPA

Apr 15, 2021 · This site provides air quality data collected at outdoor monitors across the United States, Puerto Rico, and the U. S. Virgin Islands. Users can download, output, view or visualize the data.Get price

GIS Data Downloads | USDA Plant Hardiness Zone Map

GIS Data Downloads Enhanced (high-resolution) official USDA Plant Hardiness GIS data are available in shapefile and raster grid formats from Climate Source, Inc. A license to download and use these datasets can be obtained by visiting the Climate Source website.Get price

Maps GIS | Snohomish County, WA - Official Website

Information Technology Administration Building - East 3000 Rockefeller Avenue, M/S 709 Everett, WA 98201 View Map (PDF) (see A) [email protected] Phone: 425-262-2150Get price

Soil Geography | NRCS Soils

Soil Colors — Maps that show soil color at various depths for individual States and the Continental United States. • Soil Colors posters for each State Map of the Month — The National Soil Survey Center is now featuring a display called “Map of the Month” to generate awareness about historic soil survey maps.Get price

USGS Water Data for the Nation

The USGS investigates the occurrence, quantity, quality, distribution, and movement of surface and underground waters and disseminates the data to the public, State and local governments, public and private utilities, and other Federal agencies involved with managing our water resources. About Us Help TutorialGet price

Home | NHC Maps

GIS Users If you are an existing GIS user, visit this page for information on how to connect to our data services. Information Technology: 230 Government Center Drive, Suite 155 • Wilmington, NC 28403 • Phone 910-798-7107 • Fax 910-798-7196Get price

Climate Prediction Center - United States - Soil Moisture GIS

NOAA/ National Weather Service National Centers for Environmental Prediction Climate Prediction Center National Center for Weather and Climate Prediction 5830 University Research CourtGet price