20260521
03224000
1.0
FGDC CSDGM Metadata
FALSE
ENVIRONMENTAL__303d_list
612274.066109
2527459.739011
87700.995321
1352816.357146
1
002
Projected
GCS_North_American_1983_HARN
Linear Unit: Foot_US (0.304801)
NAD_1983_HARN_StatePlane_Washington_South_FIPS_4602_Feet
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20221107
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Jeremy Reiman
Water Quality Program, Washington State Department of Ecology
Water Quality Assessment Coordinator
(360) 407-6782
P.O. Box 47600
Olympia
Washington
98504-7600
US
303d@ecy.wa.gov
20221107
ArcGIS Metadata
1.0
Rich Kim
Washington State Department of Ecology, Information Technology Services Office, GIS Unit
Spatial Database Administrator
(360) 407-6121
PO Box 47600
Olympia
Washington
98504-7600
US
Rich.Kim@ecy.wa.gov
https://test-fortress.wa.gov/ecy/gispublic/DataDownload/WQ_ENV_303dCurrent.zip
Feature Class
ENVIRONMENTAL__303d_list
2016-07-26
Jeremy Reiman, Water Quality Program, Washington State Department of Ecology, Water Quality Assessment Coordinator
map
Washington State's Current (2018) Water Quality Assessment (WQA) is produced in the Environmental Protection Agency's "Integrated Report" format. The WQA consists of both the 303(d) List and the 305(b) Report. The 303(d) List is comprised of only Category 5 listings. The 305(b) Report lists all waters and all categories. The 2018 WQA contains both freshwater and marine listings. EPA approved the 2018 WQA as fulfilling our 2014, 2016, 2018 WQA submittal requirements on August 26, 2022. The WQA is presented on the 1:24k National Hydrography Dataset (NHD).
Creation of the 303(d) List and 305(b) Report satisfies the state's requirement under the Clean Water Act to report impaired waters to the EPA. This Water Quality Assessment was approved by EPA on August 26, 2022.
Washington State Department of Ecology
Jake Kleinknecht
Washington Department of Ecology, ITSO, Water Quality Information Systems Unit
GIS Developer
360-972-4737
300 Desmond Dr.
Lacey
WA
8503
Jeremy Reiman
Water Quality Program, Washington State Department of Ecology
Water Quality Assessment Coordinator
(360) 407-6782
P.O. Box 47600
Olympia
Washington
98504-7600
US
303d@ecy.wa.gov
https://fortress.wa.gov/ecy/gispublic/DataDownload/WQ_ENV_303dCurrent.jpg
Simple image
JPG
United States of America, Washington State, Pacific Northwest
2018
inlandWaters
oceans
environment
ISO 19115 Topic Categories
environment
oceans
inlandWaters
ISO 19115 Topic Categories
Water Quality Assessment, Clean Water Act 303(d) List, Integrated Report, WQA
Federal Clean Water Act, Section 303(d)
environment
2018
inlandWaters
oceans
inlandWaters
United States of America, Washington State, Pacific Northwest
Water Quality Assessment, Clean Water Act 303(d) List, Integrated Report, WQA
oceans
environment
The Washington State Department of Ecology provides these geographic data "AS IS" WITHOUT A WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR USE, AND/OR NON-INFRINGEMENT.
The Washington State Department of Ecology uses Geographic Information System (GIS) data as an aid in accomplishing its mission of protecting the land, air, and waters of the state. The agency has built the spatial dataset provided here in order to better describe the diverse natural and cultural environment we live and work in. Disclaimer Information provided on Ecology's Web sites is accurate to the best of Ecology's knowledge and is subject to change on a regular basis, without notice. Ecology cannot and does not warrant that the information on this Web site is absolutely current, although every effort is made to ensure that it is kept as current as possible. Ecology cannot and does not warrant the accuracy of these documents beyond the source documents, although every attempt is made to work from authoritative sources. Links to related sites are provided as a courtesy, but Ecology is not responsible for their availability, content or policies. Any legal questions regarding this copyright notice and disclaimer, or other questions regarding the use of the Material from Ecology's Web sites, may be directed to Web Communications Manager, Washington State Department of Ecology, PO Box 47600, Olympia, WA 98504-7600, 360-407-6590. The Washington State Department of Ecology reserves the right to change this policy at any time without notice. For further information: http://www.ecy.wa.gov/copyright.html
Version 6.2 (Build 9200) ; Esri ArcGIS 10.8.1.14362
-124.778535
-116.807715
45.502124
49.04173
The 2018 WQA rates sampled waters into one of five categories. This GIS layer represents the 305(b) List or ALL CATEGORIES. Category 1: Meets tested standards. Placement in this category means that the waterbody segment meets the criteria it was tested for. It does not necessarily mean that a water body is free of all pollutants. Most water quality monitoring is designed to detect a specific array of pollutants, so placement in this category means that the water body met standards for all the pollutants for which it was tested. Specific information about the monitoring results may be found in the individual listings. Category 2: Waters of concern. This category lists waterbody segments where there is some evidence of a water quality problem, but not enough to require production of a TMDL. There are several reasons why a water body would be placed in this category. A water body might have pollution levels that are not quite high enough to violate the water quality standards, or there may not have been enough violations to categorize it as impaired according to Ecology's listing policy. There might be data showing water quality violations, but the data were not collected using proper scientific methods. In all of these situations, these are waters that we will want to continue to test. Category 3: Insufficient or No data. This category houses those listings where the assessed data was insufficient to determine a proper categorization of the water. Water bodies that have not been tested will not be individually listed, but if they do not appear in one of the other categories, they are assumed to belong in Category 3. Category 4: Polluted waters that do not require a TMDL. This category is for waterbody segments that have pollution problems that are being solved in one of three ways. * Category 4A is for waterbody segments that have an approved TMDL in place and are actively being implemented. * Category 4B is for waterbody segments that have a pollution control plan in place that is expected to solve the pollution problems. While pollution control plans are not TMDLs, they must have many of the same features and there must be some legal or financial guarantee that they will be implemented. * Category 4C is for waterbody segments impaired by causes that cannot be addressed through a TMDL (not due to a pollutant). These impairments include low water flow, stream channelization, and dams. These problems require complex solutions to help restore streams to more natural conditions. Category 5: Polluted waters that require a TMDL. Category 5 represents the 303(d) list, the traditional list of impaired water bodies. Placement in this category means that Ecology has data showing that the water quality standards have been violated for one or more pollutants, and there is no TMDL or pollution control plan. TMDLs are required for the water bodies in this category.
1
-124.778535
-116.807715
49.041730
45.502124
Assessment Unit features created within this dataset, based on the geographic and feature extent of the National Hydrography Dataset (NHD) at the time of Assessment (October 2014) adhere to validation rules of the NHD and are selected/limited in extent, by the Washington State Department of Ecology Water Quality Program.
The Assessment Unit features within this dataset represent the complete set of Listings associated with the Water Quality Assessment at the time of publication. All NHD-based features are based on the published version of the NHD at the time of Assessment (October 2014) not at the time of approval/publication (July 2016).
Run a Python script to join Watershed Assessment Tracking System (WATS) tabular listing data to corresponding geographic Assessment Unit features, based on: the 1:24k National Hydrography Dataset (NHD) polygon layers and linear events, latitude/longitude-based water grid and water quarter grid (sediments only), and large river assessment units for the Columbia and Snake Rivers (based on combined NHDArea and NHDWaterbody features for these waterbodies). 1) Extract joined polygon features (those with associated listings) to a separate polygon feature class for NHDWaterbody features, grid cells, quarter grid cells and large river Assessment Units. 2) Join WATS tabular listing data to 24K NHDFlowline features basedwater courses on ReachCode values and use lower and upper segment route address values to create linear events depicting the listed segments. 3) Extract the linear events based on NHD reach code and to/from measures a line feature class. 4 Buffer the line feature class by 50 feet with the Full and Flat options to create a polygon layer of listed stream segments. 5) Join the listed stream segment polygons with the listed polygons created in step 1 to create a single polygon layer of listed water bodies. 6) Export the polygons to a shapefile for publication as a download on the agency website.
2022-08-26
Jake Kleinknecht
Washington Department of Ecology, ITSO, Water Quality Information Systems Unit
GIS Developer
360-972-4737
300 Desmond Dr.
Lacey
WA
8503
The National Hydrography Dataset is a comprehensive set of digital spatial data that encodes information about naturally occurring and constructed bodies of water, paths through which water flows, and related entities. The information encoded about features includes a feature date, classification by type, other characteristics, a unique common identifier, the feature length or area, and (rarely) elevation of the surface of water pools and a description of the stage of the elevation. For reaches, encoded information includes a reach code. Names and their identifiers in the Geographic Names Information System, are assigned to most feature types. The direction of flow is encoded for networked features. The data also contains relations that encode metadata, and information that supports the exchange of future updates and improvements to the data. The names and definitions of all feature types, characteristics, and values are in the Standards for National Hydrography Dataset: Reston, Virginia, U.S. Geological Survey, 1999. The document is available online through http://mapping.usgs.gov/standards/.
24000
National Hydrography Dataset (NHDWaterbody, NHDFlowline and NHDArea feature classes)
National Hydrography Dataset
2014-10-17
http://www.ecy.wa.gov/services/gis/data/data.htm#h
The National Hydrography Dataset was published on October 17, 2014 and represented the best available hydrographic data at that time at the 1:24k scale, or larger.
2014-10-17
5739
ENVIRONMENTAL__303d_list
Category 5 listings in the 2014 Water Quality Assessment for Washington State
Washington State Department of Ecology, Water Quality Program
Feature Class
5739
ListingWaterbodyName
Waterbody Name - geographic names in use by the Water Quality Program for the Assessment (these names do not always match the official names from the GNIS).
Washington State Department of Ecology, Water Quality Program
Waterbody Name
Watershed Assessment Tracking System (WATS) database
Character string representing the water body name.
ListingWaterbodyName
String
100
0
0
AssessmentUnitTypeCode
Code value representing the type of Assessment Unit (or waterbody type) representing a Listing record
Washington State Department of Ecology, Water Quality Program
Lakes (1/4 Grids)
Listing represented by a quarter portion of a 4.5-second by 4.5-second latitude/longitude grid cell within an NHDWaterbody lake feature greater than 1,500 acres in area
Washington State Department of Ecology, Water Quality Program
Lakes
Listing represented by a NHDWaterbody lake feature less than 1,500 acres in area
Washington State Department of Ecology, Water Quality Program
Marine (1/4 Grids)
Listing represented by a quarter portion of a 4.5-second by 4.5-second latitude/longitude grid cell within an NHDWaterbody or NHDArea marine feature
Washington State Department of Ecology, Water Quality Program
Rivers/Streams (1/4 Grids)
Listing represented by a quarter portion of a 4.5-second by 4.5-second latitude/longitude grid cell within an NHDWaterbody or NHDArea freshwater river/stream feature
Washington State Department of Ecology, Water Quality Program
Large River
Listing represented by a combined NHDArea/NHDWaterbody feature representing either the Columbia or Snake Rivers, divided by either the 12-digit Hydrologic Unit Code boundary from the Watershed Boundary Dataset, managed by the USGS or manual divisions made by the Water Quality Program
Washington State Department of Ecology, Water Quality Program
Lakes (Full Grids)
Listing represented by a 4.5-second by 4.5-second latitude/longitude grid cell within an NHDWaterbody lake feature greater than 1,500 acres in area
Washington State Department of Ecology, Water Quality Program
Marine (Full Grids)
Listing represented by a 4.5-second by 4.5-second latitude/longitude grid cell within an NHDWaterbody or NHDArea marine feature
Washington State Department of Ecology, Water Quality Program
Rivers/Streams
Listing represented by an extent of one or more NHDFlowline features
Washington State Department of Ecology, Water Quality Program
Rivers/Streams (Full Grids)
Listing represented by a 4.5-second by 4.5-second latitude/longitude grid cell within an NHDWaterbody or NHDArea freshwater river/stream feature
Washington State Department of Ecology, Water Quality Program
Watershed Assessment Tracking System (WATS) database Assessment Unit type code value
AssessmentUnitTypeCode
String
100
0
0
UnmappableCode
String value created from a concatenation of Township, Range and Section values identifying the Section that a waterbody feature (not present in the NHD) is located. The concatenation value is comprised of two digits representing the Township number, a single digit specifying whether it is a half Township, a single character representing whether the Township is north or south (N or S), two digits representing the Range number, a single digit specifying whether it is a half Range, a single character representing whether the Range is east or west (E or W), and two digits representing the Section number.
Washington State Department of Ecology
Concatenated Township, Range and Section number/direction code values
UnmappableCode
String
4000
0
0
AssessmentUnitNumber
Number assigned to the spatial representation of the Assessment Unit, which can be shared between multiple Listings
Washington State Department of Ecology, Water Quality Program
Number typically represents a code value similar to the identifiers for a given Assessment Unit type (i.e. the AssessmentUnitNumber typically matches the Grid Cell Number value for grid cell Assessment Units).
AssessmentUnitNumber
String
4000
0
0
OBJECTID
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
OBJECTID
OID
4
10
0
NHDToMeasurePercent
Measure along the reach, in percent from downstream end, where a linear event ends (to).
National Hydrography Dataset
Percentage double value
NHDToMeasurePercent
Double
8
38
8
NHDReachCode
Unique identifier composed of two parts. The first eight digits is the subbasin code as defined by FIPS 103. The next six digits are randomly assigned, sequential numbers that are unique within a subbasin, length 14.
National Hydrography Dataset
14 character unique route identifier
NHDReachCode
String
14
0
0
MediumName
The medium which was measured in terms of water, tissue, sediment, etc.
Washington State Department of Ecology
Other
Assessed parameters impacting a medium other than the specified code values
Washington State Department of Ecology, Water Quality Program
Water
Assessed parameters impacting water quality
Washington State Department of Ecology, Water Quality Program
Habitat
Assessed parameters impacting habitat quality
Washington State Department of Ecology, Water Quality Program
Tissue
Assessed parameters impacting water quality (as assessed within tissue concentrations)
Washington State Department of Ecology, Water Quality Program
Sediment
Assessed parameters impacting sediment quality
Washington State Department of Ecology, Water Quality Program
The medium which was measured in terms of water, tissue, sediment, etc.
MediumName
String
50
0
0
GridCellNumber
The grid cell number is a concatenation of the latitude and longitude (in decimal degrees) of the cell centroid. The grid cell numbers for sediment listings have a quadrant identifier appended (NE, NW, SE, or SW).
Washington State Department of Ecology
Concatenated latitude and longitude (in decimal degrees) centroid values for a 4.5'x4.5' grid cell
GridCellNumber
String
14
0
0
ListingNumber
UNIQUE - This is Ecology's unique primary reference to any listing in the Water Quality Assessment. This number allows consistent tracking of a listing through the various iterations of the assessment.
Washington State Department of Ecology
LISTING_ID
Watershed Assessment Tracking System (WATS) database
Unique WATS database ID for each Listing record
ListingNumber
Integer
4
10
0
ParameterName
The pollutant being assessed.
Washington State Department of Ecology, Water Quality Program
Parameter name list
Watershed Assessment Tracking System (WATS) database
The pollutant being assessed.
ParameterName
String
100
0
0
Shape
Feature geometry.
Esri
Coordinates defining the features.
Shape
Geometry
4
0
0
EnvironmentTypeCode
Code representing whether the Listing represents a freshwater or marine waterbody environment
Washington State Department of Ecology, Water Quality Program
Freshwater
Listing represents an assessment of a freshwater waterbody
Washington State Department of Ecology, Water Quality Program
Marine
Listing represents an assessment of a marine waterbody
Washington State Department of Ecology, Water Quality Program
Code representing whether the Listing represents a freshwater or marine waterbody environment
EnvironmentTypeCode
String
10
0
0
CategoryCode
Water Quality Assessment Category value
Washington State Department of Ecology, Water Quality Program
5
Category 5: Polluted waters that require a TMDL. Category 5 represents the 303(d) list, the traditional list of impaired water bodies. Placement in this category means that Ecology has data showing that the water quality standards have been violated for one or more pollutants, and there is no TMDL or pollution control plan. TMDLs are required for the water bodies in this category.
Washington State Department of Ecology, Water Quality Program
1
Category 1: Meets tested standards. Placement in this category means that the waterbody segment meets the criteria it was tested for. It does not necessarily mean that a water body is free of all pollutants. Most water quality monitoring is designed to detect a specific array of pollutants, so placement in this category means that the water body met standards for all the pollutants for which it was tested. Specific information about the monitoring results may be found in the individual listings.
Washington State Department of Ecology, Water Quality Program
4B
Category 4B is for waterbody segments that have a pollution control plan in place that is expected to solve the pollution problems. While pollution control plans are not TMDLs, they must have many of the same features and there must be some legal or financial guarantee that they will be implemented.
Washington State Department of Ecology, Water Quality Program
2
Category 2: Waters of concern. This category lists waterbody segments where there is some evidence of a water quality problem, but not enough to require production of a TMDL. There are several reasons why a water body would be placed in this category. A water body might have pollution levels that are not quite high enough to violate the water quality standards, or there may not have been enough violations to categorize it as impaired according to Ecology's listing policy. There might be data showing water quality violations, but the data were not collected using proper scientific methods. In all of these situations, these are waters that we will want to continue to test.
Washington State Department of Ecology, Water Quality Program
3
Category 3: Insufficient or No data. This category houses those listings where the assessed data was insufficient to determine a proper categorization of the water. Water bodies that have not been tested will not be individually listed, but if they do not appear in one of the other categories, they are assumed to belong in Category 3.
Washington State Department of Ecology, Water Quality Program
4A
Category 4A is for waterbody segments that have an approved TMDL in place and are actively being implemented.
Washington State Department of Ecology, Water Quality Program
4C
Category 4C is for waterbody segments impaired by causes that cannot be addressed through a TMDL (not due to a pollutant). These impairments include low water flow, stream channelization, and dams. These problems require complex solutions to help restore streams to more natural conditions.
Washington State Department of Ecology, Water Quality Program
Water Quality Assessment Category value
CategoryCode
String
2
0
0
NHDFromMeasurePercent
Measure along the reach, in percent from downstream end, where a linear event begins (from).
National Hydrography Dataset
Percentage double value
NHDFromMeasurePercent
Double
8
38
8
Shape.STArea()
Shape.STArea()
Double
0
0
0
Shape.STLength()
Shape.STLength()
Double
0
0
0
dataset
EPSG
8.9.3(9.0.0)
Simple
FALSE
5739
TRUE
FALSE