Inland Trawl Blocks: California, 2006

<a href="https://embed.stanford.edu/iframe/?url=https%3A%2F%2Fpurl.stanford.edu%2Frf806nt4939" class="su-underline">Show Content</a>

Abstract/Contents

Abstract: For decades, California fishery reporting and management has been organized and documented using a 10 minute latitude-longitude (10 minute) grid, known colloquially as 'California Trawl Blocks'. In recent years, however, a need has developed for finer (smaller area) grid blocks to record catch and develop habitat maps and models, especially in coastal nearshore waters and for residential and sessile species. This polygon shapefile of 1 minute latitude-longitude (1 minute) blocks was created to nest within the original 10 minute latitude-longitude blocks, thus allowing the transfer of 10 minute historic and current catch data to each of the 100 1 minute cells within. The 1 minute blocks in this shapefile extend inland to include coastal areas, estuaries and bays. This shapefile is a polygon file, not a raster file, therefore, area for each 1 minute cell may be unique.
Purpose: This coverage provides a systematic polygonal grid that allows the ocean to be divided into 1 minute latitude-longitude administrative blocks for the purpose of management, analysis and defense of California's natural marine resources. Specifically, the California Recreational Fisheries Survey (CRFS) project has adopted these block sequence codes to gather recreational fisheries information statewide.

Type of resource	cartographic, software, multimedia
Form	Shapefile
Extent	0.592
Place	Monterey, CA, US
Publisher	California. Department of Fish and Game. Marine Resources Region
Date valid	2006
Publication date	2006
Language	English
Digital origin	born digital
Map data	Scale not given. ; Custom projection W 124°23ʹ41ʺ--W 116°42ʹ38ʺ/N 42°57ʺ--N 32°34ʹ6ʺW 124°18ʹ54ʺ--W 117°5ʹ39ʺ/N 41°56ʹ46ʺ--N 32°35ʹ55ʺ, Scale not given ; EPSG::4326

Creator	King, Howatt P.
Creator	Wade, Gina

Subject	Coasts
Subject	Fishing
Subject	Fisheries
Subject	Marine resources conservation
Subject	California
Subject	Pacific Ocean
Subject	2006
Subject	Oceans
Subject	Boundaries
Subject	Economy
Genre	Geospatial data
Genre	Cartographic dataset

Attribute accuracy report	Boundaries were drawn on Latitudinal and Longitudinal one minute lines from the furthest south and West Longitude and Latitude line to the furthest North and East. This Grid was then clipped to the Caltrawl ten nautical mile grid and the remaining blocks referenced and indexed. The vector drawing program used by ET Geowizards created artifacts in the form of slivers - Please see "Process Step" Tab for detailed instructions of how the Grid was created, edited and indexed. Reprojecting the shapefile may increase and/or decrease the magnitude of this error.
WGS84 Cartographics	This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.
Location	https://purl.stanford.edu/rf806nt4939

Use and reproduction: This item is in the public domain. There are no restrictions on use.
Copyright: This work is in the Public Domain, meaning that it is not subject to copyright.

Preferred citation: King, Howatt and Wade, Gina. (2006). Inland Trawl Blocks: California, 2006. California. Department of Fish and Game. Marine Resources Region. Available at: http://purl.stanford.edu/rf806nt4939.

California Department of Fish and Wildlife GIS Maps & Data

Loading usage metrics...