75766 Data Set Published / External 75715 Story Map: NOAA Fisheries West Coast Offshore Scientific Surveys Project In Work 2025-05-01 This layer is intended to represent the geographic extent of NOAA Fisheries’ U.S. West Coast Groundfish Bottom Trawl Survey. The U.S. West Coast Groundfish Bottom Trawl Survey started in 1998 and is led by NMFS Northwest Fisheries Science Center. This survey provides long-term time-series data for the management of West Coast groundfishes as well as coastwide environmental sampling for monitoring change within the California Current Ecosystem. The bottom trawl survey covers West Coast waters (55-1280 meters [30-700 fathoms]) twice annually using a trawl net and a random sampling design, stratified by depth and latitude. The survey collects fishery-independent data on abundance, distribution, and biology of most species included in the west coast groundfish management plan. Weight and measurements are collected from vertebrates and invertebrates alongside various biological samples. Samples collected include otoliths and other structures for aging, finclips for genetics, gonads for reproductive analysis, and stomach contents and tissue samples for diet/stable isotope analysis. Oceanographic sensors are affixed to the trawl net, collecting data such as temperature, salinity, and dissolved oxygen for each trawl at depth. This data product is intended to help communicate the geographic extent of NOAA Fisheries’ scientific surveys on the continental margin of the U.S. West Coast. NOAA Fisheries conducts numerous scientific surveys to inform the status of fish stocks and protected resources. For the West Coast Region and Pacific Fisheries Management Council, more than a dozen surveys are conducted routinely across the continental margin, focusing either on pelagic or demersal species or the ecosystem as a whole. They collect a variety of biological and environmental data to provide a synoptic view of the habitats and ecosystems for which the target species inhabit. The surveys utilize varying designs including fixed stations where a number of operations are centered, transect lines where fishery acoustic data are continually collected, and stratified random sampling, to name a few. Theme ISO 19115 Topic Category biota Theme ISO 19115 Topic Category environment Theme ISO 19115 Topic Category geoscientificInformation Theme ISO 19115 Topic Category oceans Theme CTD Theme bottom sampler Theme demersal fish Theme fishery independent Theme groundfish survey Spatial California Spatial Oregon Spatial United States Spatial Washington Data Set As Needed Map (digital) U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service, aka "NOAA Fisheries" 75935 Published / External Data Table Yes historical survey samples, in point format; Source: NOAA Fisheries 1 OBJECTID n/a No No Active Internal feature number.; Source: ESRI Sequential unique whole numbers that are automatically generated. 2 Shape n/a No No Active Feature geometry.; Source: Esri Coordinates defining the features. 3 Year n/a No No Active Year of sample collection; Source: Author 2003 to 2021 4 Vessel n/a No No Active Short name of survey support vessel; Source: Author Freeman: NOAA Ship Miller Freeman (R 223); Nordic Pearl: Fishing Vessel (F/V) Nordic Pearl; Ricker: Canadian Coast Guard Ship (CCGS) W.E. Ricker; Shimada: NOAA Ship Bell M. Shimada (R 227); 5 SampleType n/a No No Active Type of survey sample; Source: Author CTD: standard oceanographic sample collecting conductivity and temperature measurements at various water depths; trawl: pelagic or bottom trawl sample; uCTD: oceanographic sample collecting conductivity and temperature measurements using underway CTD; zooplankton: oceanographic sample collecting zooplankton using various net types; 6 FC_Name n/a No No Active Name of original feature class as specified by data provider; Source: Author Name of original feature class as specified by data provider 7 Latitude n/a No No Active Latitude, in decimal degrees, of sample collection; Source: Author Latitude, in decimal degrees, of sample collection 8 Longitude n/a No No Active Longitude, in decimal degrees, of sample collection; Source: Author Longitude, in decimal degrees, of sample collection 9 SurveyName n/a No No Active Name of survey as identified in either literature or NOAA Fisheries reports; Source: Author Name of survey in string format 10 SurveyNum n/a No No Active Survey index number as referenced in Table 1 of NOAA Fisheries comment letters; Source: Author 1 to 13 11 SurveyAbbr n/a No No Active Recognized abbreviation of survey name; Source: Author Recognized abbreviation of survey name, as designated by NOAA Fisheries 12 NmfsSciCtr n/a No No Active NOAA Fisheries designated Science Center; Source: Author AFSC: Alaska Fisheries Science Center; NWFSC: Northwest Fisheries Science Center; SWFSC: Southwest Fisheries Science Center; 13 YearStart n/a No No Active First year of survey; Source: Author 1949 to 2015 14 Frequency n/a No No Active Period for which survey is conducted (e.g., annual, biennial, triennial, monthly, quarterly, seasonal, etc.); Source: Author annual: once per year; biennial: once every two years; monthly: once per month; quarterly: once every 3 months; seasonal: generally once per season, as defined by NOAA Fisheries and particular survey needs; triennial: once every three years; 15 SurveyDesc n/a No No Active Description of survey including general sampling design and method; Source: Author Description of survey in string format 16 MajorApps n/a No No Active Major applications of survey as they relate to NOAA Fisheries' mandates; Source: Author Textual descriptions of major applications of survey as they relate to NOAA Fisheries' mandates 17 InformESA n/a No No Active Boolean for whether or not survey informs Endangered Species Act (ESA); Source: Author no: Boolean False; yes: Boolean True; 18 InformMMPA n/a No No Active Boolean for whether or not survey informs Marine Mammal Protection Act (MMPA); Source: Author no: Boolean False; yes: Boolean True; 19 InformMSA n/a No No Active Boolean for whether or not survey informs Magnuson-Stevens Fisheries Conservation and Management Act (MSA); Source: Author no: Boolean False; yes: Boolean True; 20 URL n/a No No Active Universal resource locator (URL) for documentation on survey design, description, history, etc.; Source: Author Universal resource locator (URL) for documentation on survey design, description, history, etc. Data Steward 2022-10-20 Person Whitmire, Curt curt.whitmire@noaa.gov https://orcid.org/0000-0001-9176-1486 2725 Montlake Boulevard East Seattle WA 98112 USA Distributor 2022-10-20 Organization NOAA GeoPlatform gis.community@noaa.gov https://noaa.maps.arcgis.com/home/index.html homepage main access page for the NOAA Geoplatform Online Resource Metadata Contact 2022-10-20 Person Whitmire, Curt curt.whitmire@noaa.gov https://orcid.org/0000-0001-9176-1486 2725 Montlake Boulevard East Seattle WA 98112 USA Point of Contact 2022-10-20 Person Whitmire, Curt curt.whitmire@noaa.gov https://orcid.org/0000-0001-9176-1486 2725 Montlake Boulevard East Seattle WA 98112 USA Publication Date -138.41009 -107.279197 58.605549 26.447533 Range 2003-06-24T00:00:00+00:00 2024-10-15T00:00:00+00:00 Projected EPSG:3857 WGS 84 / Pseudo-Mercator World Geodetic System 1984 WGS 84 6378137 298.257223563 WGS 84 Popular Visualisation Pseudo-Mercator Popular Visualisation Pseudo Mercator Latitude of natural origin 0° 0' 0" N Longitude of natural origin 0° 0' 0" E False easting 0 metre False northing 0 metre 1 Easting X metre east 2 Northing Y metre north Unclassified *** No Warranty*** The user assumes the entire risk related to its use of these data. NMFS is providing these data "as is," and NMFS disclaims any and all warranties, whether express or implied, including (without limitation) any implied warranties of merchantability or fitness for a particular purpose. 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 dataset limitations, restrictions or intended use. In no event will NMFS be liable to you or to any third party for any direct, indirect, incidental, consequential, special or exemplary damages or lost profit resulting from any use or misuse of this data. https://services2.arcgis.com/C8EMgrsFcRFL6LrL/arcgis/rest/services/US_West_Coast_CONUS_NMFS_At_Sea_Scientific_Surveys/FeatureServer/0 2022-10-20 Organization NOAA GeoPlatform Data access URL ESRI REST Service Version 6.2 (Build 9200) ; Esri ArcGIS 10.7.1.11595 no missing features Features were confirmed and checked via team reviews. 1 Data were loaded from source data into ArcGIS Pro and a definition query was used in order to isolate the survey of interest, then published to ArcGIS Online. NMFS_Survey_Samples Feature class within the NMFS_Share_Albers folder within the OWEC geodatadase 1 The data was filtered using a definition query of `SurveyNum = 1 And SampleType = 'trawl'` to isolate trawl samples from the WCGBTS. 2 The dataset was then uploaded to the NOAA GeoPlatform as a Feature Service for display on NOAA Fisheries West Coast At-Sea Scientific Surveys StoryMap. Organization Northwest Fisheries Science Center NWFSC nmfs.nwfsc.metadata@noaa.gov https://ror.org/05r7z1k40 2725 Montlake Boulevard East Seattle WA 98112 USA 206-860-3200 https://www.nwfsc.noaa.gov NWFSC Home Online Resource 75935 Entity gov.noaa.nmfs.inport:75766 Melissa Widas 2025-05-07T20:27:31 SysAdmin InPortAdmin 2026-03-04T19:17:17 2025-07-02 Northwest Fisheries Science Center NWFSC 2725 Montlake Boulevard East Seattle WA 98112 USA 206-860-3200 https://www.nwfsc.noaa.gov 1001 Public No No 2025-07-02 1 Year 2026-07-02