EarthWorks Geospatial Catalog

Inland Trawl Blocks: California, 2006

Author(s)
and
Description
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.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.
Publisher
California. Department of Fish and Game. Marine Resources Region
Place(s)
California and Pacific Ocean
Subject(s)
Coasts, Fishing, Fisheries, Marine resources conservation, Oceans, Boundaries, and Economy
Year
2006
Held by
Stanford
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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.
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