GIS Data - Data and Tools - USGS

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

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

U.S. Data by State - GIS Data Guide - Library Guides at

Oct 15, 2020 · Geological dataset for Alabama. The web page includes GIS data in many categories. Data are available for direct download (GIS shapefile format) on the page if the data source is Geological Survey of Alabama. If the data are from another source or agency, the weblink to the data is given.Get price

Outdoor Air Quality Data - United States Environmental

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

Scale of measurement - GIS Wiki | The GIS Encyclopedia

Sep 10, 2018 · For example, an HDI score of 0.920 (the score of the United States in 2015) does not mean anything unless one compares it to other countries (it is #10 in the world, and thus considered "highly developed"). Therefore, it is more powerful than ordinal but less powerful than ratio.Get price

United States GIS Data and Maps - GIS Lounge

Nationwide GIS Data and MapsState by State – GIS Resources Within The United StatesCaliforniaFloridaKentuckyNew YorkRelated Us GIS Data and Maps is the GIS data depository for U.S. government data with over 272,000 datasets and growing. The site also has an Apps Showcase, highlighting different sites that are using data from 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

(PDF) Water quality management using GIS and RS tools

geographical information systems measurement. Water quality restoration programs can utilize RS and GIS TMDL program is a well known water quality restoration program of United States .Get price

United States - Maps - U.S. Energy Information Administration

Petroleum prices, supply and demand information from the Energy Information Administration - EIA - Official Energy Statistics from the U.S. GovernmentGet price

Data Quality

Two primary attributes characterize data quality. Accuracy How close a measurement is to its actual value; often expressed as a probability. describes how close a measurement is to its actual value and is often expressed as a probability (e.g., 80 percent of all points are within +/− 5 meters of their true locations).Get price

Quality assurance - GIS Wiki | The GIS Encyclopedia

HistoryQuality Assurance Versus Quality ControlCompany QualityUsing Contractors and/or ConsultantsScientific ResourcesSee AlsoExternal LinksEarly efforts to control the quality of productionGet price

15 Free Satellite Imagery Data Sources - GIS Geography

Feb 27, 2021 · 2. Sentinel Open Access Hub. Top Tier Worldwide Data European Space Agency Registration Required. Sentinel-2 is the start of a new and exciting era in open and free satellite imagery.Get price

Air Quality - Cities and Counties | National Air Quality

Jun 08, 2020 · The following spreadsheets provide air quality status and trends for counties and cities, defined as CBSAs (Core-Based Statistical Areas Exit), with monitoring data. These tables are based on data from EPAAQS (Air Quality System) database as of May 5, 2020.Get price

ArcGIS Roads and Highways | Road Network Management

ArcGIS Roads and Highways, an extension for ArcMap and ArcGIS Enterprise, is for agencies responsible for road network management. Integrate enterprise data, maintain your LRS exchange data using AIXM. Request free trial.Get price

Air Data Basic Information - United States Environmental

For example, an AQI value of 50 represents good air quality with little potential to affect public health, while an AQI value over 300 represents hazardous air quality. An AQI value of 100 generally corresponds to the national air quality standard for the pollutant, which is the level EPA has set to protect public health.Get price

Interactive Map of Air Quality Monitors | Air Data: Air

Jan 30, 2019 · The AirData Air Quality Monitors app is a mapping application available on the web and on mobile devices that displays monitor locations and monitor-specific information. It also allows the querying and downloading of data daily and annual summary data.Get price

USGS Water-Quality 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

Estimated Total Nitrogen and Total Phosphorus Loads and

The data in this indicator table are based on output from the United States Geological Survey’s (USGS) Spatially Referenced Regression On Watershed Attributes (SPARROW) models. SPARROW is a watershed modeling tool which, based on a mass-balance approach, estimates the excess amounts (i.e., amounts beyond assimilative capacity) of nitrogen andGet price

Accuracy and precision - GIS Wiki | The GIS Encyclopedia

Accuracy Versus Precision; The Target AnalogyQuantifying Accuracy and PrecisionAccuracy and Precision in Binary ClassificationAccuracy and Precision in Psychometrics and PsychophysicsAccuracy and Precision in Information SystemsSee AlsoReferencesExternal LinksAccuracy is the degree of veracity while precision is the degree of reproducibility.[citation needed]The analogy used here to explain the difference between accuracy and precision is the target comparison. In this analogy, repeated measurements are compared to arrows that are shot at a target. Accuracy describes the closeness of arrows to the bullseye at the target center. Arrows that strike closer to the bullseye are considered more accurate. The closer a systemmeasurements to the accepted value, the more accurate the system is considered to be. To continue the analogy, if a large number of arrows are shot, precision would be the size of the arrow cluster. (When only one arrow is shot, precision is the size of the cluster one wouldexpect if this were repeated many times under the same conditions.) When all arrows are grouped tightly together, the cluster is considered precise since they all struck close to the same spot, if not necessarily near the bullseye. The measurements are...Get price

Climate Prediction Center - GIS data (Shapefile and Raster)

HOME GIS Data GIS Data : CPC GIS DATA (Shapefile Raster) NOTE: If you have any questions concerning any of the GIS data provided here, please contact the person responsible for the data.Get price

Techniques and Methods |

The U.S. Geological Survey is integrating its water science programs to better address the Nation’s greatest water resource challenges. At the heart of this effort are plans to intensively study at least 10 Integrated Water Science (IWS) basins — medium-sized watersheds (10,000-20,000 square miles) and underlying aquifers — over the next decade.Get price

Washington Geospatial Open Data Portal

Washington State Geospatial Open Data PortalGet price

Maps GIS - Hamilton County

Maps GIS. Map Shop allows you to view the most frequently requested maps created by the Hamilton County Planning and Development Department. The main categories are zoning maps, land use plan maps, street maps, and census maps.Get price

National Water-Quality Assessment (NAWQA)

NAWQA Water-Quality Research. SURFACE WATER AND ECOLOGY. Water Quality and Ecology of Small Streams (RSQA) The Regional Stream Quality Assessment (RSQA) is studying the relations between stressors (chemical and physical) and stream ecology (fish, algae, and aquatic invertebrates) at small streams in five large regions of the United States.Get price Brazilian Jiu Jitsu, Kids Jiu Jitsu Gi Children

MAXIMUM QUALITY at a MINIMUM PRICE: This a bargain, we bet that you would not be able to find a Brazilian Jiu Jitsu Gi for kids at this price in the martial arts clothing market. Kids Jiu Jitsu Gi Size Guide (ChildHeight in inches) We have improved the sizing on the kids gi, so please follow these new measurements : K000: 37'', K00: 43'', K0: 47'', K1: 51'', K2: 55'', K3: 59'', K4: 63''Get price

Water Resources of the United States—National Water

Water-quality data Measurements Annual Report. Active Sites. Any data Instantaneous data Daily data Water-quality data Peak data Measurements. Inactive Sites.Get price

Pipeline and Power Line Construction Your source for USDA

United States Department of Agriculture Farm Service Agency Aerial Photography Field Office Leaflet 571 IMAGERY PRODUCTS SERVICES Your source for USDA aerial imagery, custom products, and GIS services with quality and service in mind. Bear Lake IdahoGet price

Global Positioning System - Wikipedia

The Global Positioning System (GPS), originally Navstar GPS, is a satellite-based radionavigation system owned by the United States government and operated by the United States Space Force. It is one of the global navigation satellite systems (GNSS) that provides geolocation and time information to a GPS receiver anywhere on or near the EarthGet price

Ronin Brand Kimonos - Official Website of Ronin Brand

Given Ronin’s impeccable track record for quality, this uniform is a tremendous value starting at just $39.95. That price doesn’t come at the expense of selection, offered in black or white, and a full range of sizes spanning 00 through 7.Get price