Data and Tools
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NHDPlusV1 Puerto Rico & US Virgin Islands Data
NHDPlus Version 1 data for the Puerto Rico and US Virgin Islands vector processing unit.
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NHDPlusV1 Tools
A list of tools used in conjuction with NHDPlus version 1.
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NHDPlusV1 Great Basin Data
NHDPlus Version 1 data for the Great Basin vector processing unit.
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NHDPlusV1 California Data
NHDPlus Version 1 data for the California vector processing unit.
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Status of Conditional Registrations under FIFRA sec.3(c)(7)(C) from 2000 through 2023
Table to provide status of pesticides for which EPA has issued a conditional registration since 2000.
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EPA Nitrogen and Phosphorus Pollution Data Access Tool
Describes NPDAT and what data is available on it.
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Table of Available Cycles in the RAD
Table of Available Cycles in the RAD
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SUMMARIES OF WATER POLLUTION REPORTING CATEGORIES
SUMMARIES
OF WATER POLLUTION REPORTING CATEGORIES -
Web Style Guide: Maps
You can embed GeoPlatform maps, create standard Where You Live or US area maps, and link static images to larger or more interactive maps. Examples are included here.
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System Change Log for STOrage and RETrieval and Water Quality eXchange
This change log details the status of bugs and issues in the STORET/WQX System. Matters of contention that are resolved are listed as completed, while ongoing issues are listed as open.
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STOrage and RETrieval Web Services Consumption User Guide Version 2.1.8
This document provides a description of the STORET Web Services and an introduction to consuming
STORET Web Services from other applications. -
Downloading Storet Data
Downloading STORET Data Instructions
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Air Emissions Inventories, Modeling, Monitoring and Emissions Factors
a collection of EPA resources dealing with air emissions data, estimates, monitoring, reporting, modeling and inventories.
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Air Pollutant Receptor Modeling
Receptor models are mathematical or statistical procedures for identifying and quantifying the sources of air pollutants at a receptor location.
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Hot Topics in Louisiana
Hot topics in Louisiana
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Groundwater Sampling Operating Procedure
Field Branches Quality System and Technical ProcEPA Region 4 Science and Ecosystem Support Division (SESD) document, from Nov. 1, 2007, that describes general and specific procedures, methods, and considerations when collecting groundwater samples.
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Clone of EPA FOIA Annual Report for 2013
This Annual Freedom of Information Act report covers the period 10/01/2012, through 09/30/2013, as required by 5 U.S.C. 552.
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Developing a Voluntary Restoration and Protection Program for Wetlands
Information on how to develop a Voluntary Restoration and Protection Program
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WATERS Terms of Use and Disclaimer
The Reach Address Database (RAD) stores reach address information for each Water Program feature that has been linked to the underlying surface water features (streams, lakes, etc) in the National Hydrology Database (NHD) Plus dataset.
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Dissolved Oxygen
This page introduces the dissolved oxygen module, when to list dissolved oxygen as a candidate cause, ways to measure dissolved oxygen, simple and detailed conceptual model diagrams for dissolved oxygen, and references for this module.