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Data and Tools

NHDPlusV1 Great Basin Data

NHDPlus Version 1 data for the Great Basin vector processing unit.
NHDPlusV1 Tools

A list of tools used in conjuction with NHDPlus version 1.
NHDPlusV1 Colorado Data

NHDPlus Version 1 data for the Colorado vector processing unit.
NHDPlusV1 Souris-Red-Rainy Data

NHDPlus Version 1 data for the Souris-Red-Rainy vector processing unit.
NHDPlusV1 Hawaii Data

NHDPlus Version 1 data for the Hawaii vector processing unit.
NHDPlusV1 New England Data

NHDPlus Version 1 data for the New England vector processing unit.
Applications and Uses for DFLOW

This page talks about a DFLOW case study and the ability of the EPA and states to evaluate alternative flow statistics.
NHDPlusV1 Documentation

Metadata, training resources, presentations, and other documentation for NHDPlus version 1.
Downloading STORET Data Help

storet data warehouse help information
NHDPlusV1 Great Lakes Data

NHDPlus Version 1 data for the Great Lakes vector processing unit.
NHDPlusV1 HUC8 Dataset

A listing of HUC8 datasets by vector processing unit.
Water Quality Exchange Web V 2.0 Functionality

This page details the changes in the second version of WQX Web.
Definition and Characteristics of Low Flows from DFLOW

This page provides background information on the definition and characteristics of low flows, the relationship between low flows and aquatic life criteria and design flows.
NHDPlusV1 Data

The collection of data for all vector processing units of NHDPlus version 1.
NHDPlusV1 Rio Grande Data

NHDPlus Version 1 data for the Rio Grande vector processing unit.
NHDPlusV1 Mississippi Data

NHDPlus Version 1 data for the Mississippi vector processing unit.
Safe Drinking Water Information System

This page contains basic information, links, and tools related to the safe drinking water information system.
NHDPlusV1 South-Atlantic Gulf Data

NHDPlus Version 1 data for the South-Atlantic Gulf vector processing unit.
NHDPlusV1 Pacific Northwest Data

NHDPlus Version 1 data for the Pacific Northwest vector processing unit.
2016 TRI National Analysis Dioxin and Dioxin-like Compounds and TEQ Data Files

Toxic equivalents (TEQs) allow for a better understanding of the toxicity of releases and waste management activities at facilities that report to the TRI Program.