Data and Tools
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NHDPlusV1 Great Lakes Data
NHDPlus Version 1 data for the Great Lakes vector processing unit.
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Water Quality Exchange Web V 2.0 Functionality
This page details the changes in the second version of WQX Web.
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NHDPlusV1 Mississippi Data
NHDPlus Version 1 data for the Mississippi vector processing unit.
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NHDPlusV1 Rio Grande Data
NHDPlus Version 1 data for the Rio Grande vector processing unit.
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NHDPlusV1 Pacific Northwest Data
NHDPlus Version 1 data for the Pacific Northwest vector processing unit.
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NHDPlusV1 Documentation
Metadata, training resources, presentations, and other documentation for NHDPlus version 1.
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NHDPlusV1 HUC8 Dataset
A listing of HUC8 datasets by vector processing unit.
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Downloading STORET Data Help
storet data warehouse help information
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NHDPlusV1 Mid-Atlantic Data
NHDPlus Version 1 data for the Mid-Atlantic vector processing unit.
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NHDPlusV1 Souris-Red-Rainy Data
NHDPlus Version 1 data for the Souris-Red-Rainy vector processing unit.
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NHDPlusV1 Texas Gulf Data
NHDPlus Version 1 data for the Texas Gulf vector processing unit.
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NHDPlusV1 Colorado Data
NHDPlus Version 1 data for the Colorado vector processing unit.
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NHDPlusV1 Hawaii Data
NHDPlus Version 1 data for the Hawaii vector processing unit.
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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