EPA Environmental Dataset Gateway


Open/Close section Identification Information
Title: EPA Office of Water (OW): 305(b) Waters as Assessed NHDPlus Indexed Dataset
Abstract: The 305(b) program system provide assessed water data and assessed water features for river segments, lakes, and estuaries designated under Section 305(b) of the Clean Water Act. 305(b) waterbodies are coded onto NHDPlus v2.1 features creating area, point and linear events representing assessed and non-assessed waters. In addition to NHDPlus reach indexed data there may also be custom events (point, line, or area) that are not associated with NHDPlus and are in an EPA standard format that is compatible with EPA's Reach Address Database. These custom events are used to represent locations of 305(b) waterbodies that are not represented well in NHDPlus.
Purpose: To identify the spatial extent of waters listed under the 305(b) program attributed as being assessed in the ATTAINS database. These waters can be linked to the 305(b) information stored in the EPA's Assessment and TMDL Tracking and Implementation System (ATTAINS) for query and display. Use the Source_FeatureID field and Cycle_Year field to link indexed assessed waters to the EPA's ATTAINS Database.
Open/Close section Time Period of Content
Publication Date: 20150501
Progress: In work
Frequency: Continual
Open/Close section Single Date
Date: 20150501
Currentness: publication date
Open/Close section Spatial Domain
West Bounding Longitude: -160
East Bounding Longitude: -64
North Bounding Latitude: 50
South Bounding Latitude: 17
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Open/Close section Constraints
License Although these data have been processed successfully on a computer system at the Environmental Protection Agency, no warranty expressed or implied is made regarding the accuracy or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. It is strongly recommended that careful attention be paid to the contents of the metadata file associated with these data to evaluate data set limitations, restrictions or intended use. The U.S. Environmental Protection Agency shall not be held liable for improper or incorrect use of the data described and/or contained herein.
Access: None
Use: None. Please check sources, scale, accuracy, currentness and other available information. Please confirm that you are using the most recent copy of both data and metadata. Acknowledgement of the EPA would be appreciated.
Open/Close section Theme Keywords
Theme Topics: accessed waters, 305B, clean water act, map service, waters10, listed waters, shapefile, feature service, point source, GIS, EPA, Stream, reach
Open/Close section Contact Information
Originator: US Environmental Protection Agency
Email: reid.wendy@epa.gov
Address Type: mailing address
City: Washington
State: DC
Postal Code: 20460
Telephone: 202-566-1705
Open/Close section Metadata Reference Information
File Identifier: {81060F20-4F5C-42E2-BBC7-CD96E442B8FA}
Metadata Date Stamp: 2018-07-10
Metadata Standard Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata Standard Version: FGDC-STD-001-1998