Data and Tools
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Clean Watersheds Needs Survey (CWNS) 2008 Data Dictionary
The Data Dictionary provides definitions of data elements available in the CWNS summary reports, detailed reports, and Access database.
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SW-846 Method Style Guide
This style guide is for use by developers of new methods for SW-846 and editors of existing SW-846 methods. Its use will help assure consistent method format and minimize editorial errors during the development and maintenance of SW-846.
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RTOC Workgroup Session/Agenda Request
Form for requesting agenda topics or workgroup sessions at EPA Pacific Southwest (Region 9) RTOC meetings.
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NHDPlusV1 New England Data
NHDPlus Version 1 data for the New England vector processing unit.
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NHDPlusV1 Data
The collection of data for all vector processing units of NHDPlus version 1.
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NHDPlusV1 South-Atlantic Gulf Data
NHDPlus Version 1 data for the South-Atlantic Gulf vector processing unit.
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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.