20230420 vector digital data https://wildlife.ca.gov/Data/BIOS https://filelib.wildlife.ca.gov/Public/BDB/GIS/BIOS/Public_Datasets/3000_3099/ds3093.zip The basic 10 minute grid was created using the ARC/INFO generate fishnet command. The input coordinates were in decimal degrees and the resultant coverage was subsequently projected into Teale Albers. The coastline derived from the 1:100K hydrology was incorporated to the 10 minute grid. The trawl logbook developed by the Pacific Fishery Management Council, the States of Washington, Oregon, and California, and the National Marine Fisheries Service was used as the reference. Many grids, therefore, are 30' x 30' or larger or are partial representations of a 10' grid. Islands, bays, deltas and estuarine waters that occurred in the 1:100K hydrology were included in the coverage. Any features not in fishable waters were given an ID of zero. All other features correspond to the ID shown in the Trawl Logbook. The field containing the ID is called block10-id. Commercial fishing reporting blocks for the state of California. In 1933 the Division of Fish and Game divided the ocean waters of the state into sections, or blocks. Each block was approximately ten miles square, using the longitude and latitude lines so that each block was ten minutes of longitude and ten minutes of latitude. This system was carried out to about fifty miles from shore. Beyond this was constructed one row of blocks thirty minutes of longitude and thirty minutes of latitude to take care of any extension of fishing grounds. For more information see: Bureau of Commercial Fisheries. 1935. Fish Bulletin No. 44. The Commercial Fish Catch of California for the Years 1930-1934, Inclusive. Complete As needed -125.826731 -116.708907 42.119332 32.217370 None CDFW, Commercial Fishing, Landing Receipts, Fish Tickets, Marine Landings Data System, MLDS, Marine Logs System, MLS, Logbooks ISO 19115 Topic Categories oceans None California None License:This work is licensed under Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). Using the citation standards recommended for BIOS datasets (https://www.wildlife.ca.gov/Data/BIOS/Citing-BIOS) satisfies the attribution requirements of this license.Disclaimer:The State makes no claims, promises, or guarantees about the accuracy, completeness, reliability, or adequacy of these data and expressly disclaims liability for errors and omissions in these data. No warranty of any kind, implied, expressed, or statutory, including but not limited to the warranties of non-infringement of third party rights, title, merchantability, fitness for a particular purpose, and freedom from computer virus, is given with respect to these data. California Department of Fish and Wildlife Marine Region GIS r7mrgis@wildlife.ca.gov California Department of Fish and Wildlife Marine Region GIS r7mrgis@wildlife.ca.gov California Department of Fish and Wildlife, Marine Region Version 6.2 (Build 9200) ; Esri ArcGIS 10.6.1.9270 Vector GT-polygon composed of chains 547 NAD 1983 California Teale Albers 34.0 40.5 -120.0 0.0 0.0 -4000000.0 coordinate pair 0.0001 0.0001 meter D North American 1983 GRS 1980 6378137.0 298.257222101 ds3093 OBJECTID Internal feature number. Esri Sequential unique whole numbers that are automatically generated. BLOCK10_ID Block ID ESRI Coordinates defining the features. Shape_Length Length of feature in internal units. Esri Positive real numbers that are automatically generated. Shape_Area Area of feature in internal units squared. Esri Positive real numbers that are automatically generated. AreaMi Area of block in square miles Esri Sequential unique whole numbers that are automatically generated. Acres Area of block in acres Esri Sequential unique whole numbers that are automatically generated. Shape Feature geometry. ESRI Coordinates defining the features. DATA DICTIONARY: Structure for CALTRAWL.AAT COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC DESCRIPTION 1 FNODE# 4 5 B - 5 TNODE# 4 5 B - 9 LPOLY# 4 5 B - 13 RPOLY# 4 5 B - 17 LENGTH 4 12 F 3 21 CALTRAWL# 4 5 B - 25 CALTRAWL-ID 4 5 B - All fields in the AAT are ARC/INFO common items. Structure for CALTRAWL.PAT COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC DESCRIPTION 1 AREA 4 12 F 3 5 PERIMETER 4 12 F 3 9 CALTRAWL# 4 5 B - 13 CALTRAWL-ID 4 5 B - 17 BLOCK10-ID 3 3 I - ID corresponding to the " ""Trawl logbook"" block ID." All fields except BLOCK10-ID are ARC/INFO common items. Note: other fields may be present due to work in progress... BLOCK10-ID ---- ID corresponding to the block number appearing in the Washington-Oregon-California Trawl Logbook. Sample Trawl Data Year: 1992 Trawl data relates to the caltrawl coverage by block number. caltrawl.pat:Block10-id ---> caltrawl.dat:Block (ONE TO MANY) Each record in the caltrawl.dat file is a 'trawl event'. A 'trawl event' is the dropping and hauling in of a net. There may be many events per 'fishing trip'. Each 'trawl "event' is given a ""drag_nbr"" in the table. This indicates" the sequence of events. "In general, if you group the vessel ID and Port for particular" "departure time and date, this would be a 'fishing trip'." This would likely show a number of 'trawl events' as indicated "by the sequential ""drag_nbr""'s." The table may be queried in many ways and related back to the caltrawl coverage to show which blocks satified the query(s). Whenever your end query has repeated block ids or ONE --> MANY you must choose to link the tables (ArcView / ARC-INFO). "If your end query has non-repeating block ids, you can opt" to join the resultant table back to the coverage. The advantage to ending up with a joined situation is that in ArcView the 'Theme' then can be easily classified. "For instance, green shade for less harvesting and red for" heavy harvesting etc.... Field Definitions "(* See, Jerry Kobylinski for further information)" Type: unknown* Block: key field (relates to Block10_id field in Caltrawl coverage) Month: numeric month (parsed from date field) Day: numeric day (parsed from date field) Year: numeric year (parsed from date field) Port: port of depature* Tot_lbs: total pounds of catch for trawl event Wt# fields: (this 'lookup' table is called: caltrawl.mkt) Wt# Market code Species Inclusive market category codes 1 150 "Shark, unspecified" "149-151,153-156,158,160-164,167-169,179" 2 152 "Shark, Spiny dogfish" 152 3 159 "Shark, Soupfin" 159 4 175 Skate "165,174-178" 5 190 Sablefish 190 6 195 Lingcod 195 7 197 Pacific cod 197 8 200 "Sole, Unspecified" "200,202,204,208,210,000" 9 201 "Flounder, Arrowtooth" 201 10 203 "Sole, rock" 203 11 205 "Sole, sand" 205 12 206 "Sole, English" 206 13 207 "Sole, Rex" 207 14 209 "Sole, Petrale" 209 15 211 "Sole, Dover" 211 16 222 "Halibut, California" "220,222" 17 225 San dab 225-228 18 231 "Flounder, Starry" "230,231" 19 240 Turbot 235-240 20 250 Rockfish "245-260,263,265,267,268,651-671,956-960,962,970-97" 21 262 Thornyhead "262,678,679" 22 269 "Rockfish, Widow" 269 23 270 "Rockfish, Splithead & Rosefish" "270,961" 24 271 "Rockfish, Pacific ocean perch" 271 25 495 "Whiting, Pacific" 495 26 992 Trawled fish for animal food 992 27 997 "Trawled fish, Unspecified" "170-172,196,198,261,272,290,997" Fed_area: federally designated area* Hours: number of hours for trawl event (h.hh) Genblock: general MRD block id* Bot_dpth: depth to bottom during trawl event (feet) Net_dpth: depth of net during trawl event (feet) Vessel_id: vessel identification* Drag_nbr: trawl event number for fishing trip Departure: time of departure from port (hh:mm) Date: date Chksum: check field (TSB); user defined field Status: status field (TSB); user defined field See access and use constraints information. SDE Feature Class 0.716 20230522 California Department of Fish and Wildlife Marine Region GIS r7mrgis@wildlife.ca.gov FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time