This is a list of cannabis seizures notable for record-setting size or social precedent. Operation Agency Location Year Amount and form* Notes U.S.–Colombia joint operationGuajira Peninsula, Colombia1978570+ tonsLargest drug seizure to date by a factor of 10, worth $200 million. Night Train SeizureUS Coast GuardAtlantic Ocean near Florida197854 tons (108,000 lb) US Coast GuardPacific Ocean 150 miles from San Diego198426,000 poundsYacht Arrakis; largest on West Coast to date. Project Pacifico U.S. Drug Enforcement Administration (DEA)and Mexican authoritiesChihuahua, Northern Mexico198410,000 tons (20,000,000 pounds)Series of raids in Mexico, some unharvested plants, some harvested and baled. Seizure included 45 trucks able to carry 30 tons of bales each. US Coast Guard Cutter Roger B Taney (WHEC-37)Atlantic Ocean 1985160 TonsTug and Barge Cornbread Mafia seizureOrganized Crime Drug Enforcement Task Force (investigator)10 Midwest states, based in Kentucky1989182 tons (364,000 pounds) valued at $350 millionOver 70 individuals indicted operating 29 farms, called by federal prosecutors the "largest domestic marijuana producing organization in the nation." Operation Green SweepUS Army/National Guard/Bureau of Land Management King Range National Conservation Area, Emerald Triangle, California19901400 plantsFirst time active-duty troops engaged in counterdrug activities inside US borders. Operation Conquistador DEA Caribbean (multiple)2000 362 tonnes DEA coordinated 26 country effort; largest in this table by weight. Operation KeymerLocal policeCambridge UK2006 Operation Imperial Emperor DEA California–Mexico200727,229 poundsOther drugs and $45 million cash seized. Federal/localHouston200719,000 poundsSeized drugs were being transported in school buses. Norwegian cannabis raids National Criminal Investigation Service Norway2007–2008 500 cannabis plants on a single farm, over 40 individual raids One of Norway's largest narcotics cases. Counter Narcotics Police of AfghanistanKahdahar, Afghanistan2008260 tons hashish520,000 lb†Said to be largest drug seizure in history at the time, worth $400 million. US interagency?Queens200950,000 poundsBC bud, street value $150 million. Operation Save our SierraState/FederalFresno, California2009330,000 plantsEstimated value $1 billion, second largest in this table. RCMPMontreal20108 tons (16,000 pounds) hashishFound in abandoned trailer. Operation Deliverance DEA Mexico–US 201069 tons Bilateral Cowabungle raid?Federal police Tijuana2010105 tonsLargest seizure in Mexico in years. Mexican Army Baja California desert, Mexico2011120 tons of marijuana, worth 1.8 billion pesos ($160 million)Largest plantation ever seized in Mexico; over open-air farm one mile from federal highway, possibly run by Sinaloa cartel Operation Kruz ControlFederal interagency/localArizona2012–201327,000 poundsYear-long operation. CBP Calexico border crossing 201335,000 poundsLargest seizure at US-Mexico border. Operation Everglades CBP, DEA Chokoloskee 1983–1984500,000 lbsLargest seizure at the time Local policeGoodrich, Texas2014100,000 plantsLargest seizure in Texas history at the time. Operation Weed Eaters and Operation Thunderstorm National Drug Law Enforcement Agency Akure, Ondo State January–June 2014 Largest single seizure by agency in Ondo State to date, valued at 364 million naira. Ondo State and elsewhere in Nigeria U.S. Customs and Border Protection (CBP) Otay Mesa port of entry, San Diego County, California201527,000 poundsSecond-largest seizure at US–Mexico border. Federal/localLipscomb County, Texas2015109,000 plantsNew state record. Hong Kong Police ForceHong Kong2017Largest seizure in HK in a decade. DuPage County Metropolitan Enforcement GroupDuPage County, Illinois (Chicago area)20217,688 pounds of cannabis, 406 pounds of cannabis edibles, and 6,891 THC vaping cartridgesLargest seizure in DuPage County "in memory", estimated to be worth $22 million. Operation Trojan Shield U.S. Federal Bureau of InvestigationAustralian Federal PoliceNew Zealand PoliceEuropol 2021 22 tons Enabled by ANOM standalone encryption devices used by criminals but secretly supplied by FBI. Antelope Valley eradication operation Los Angeles County Sheriffother southern California sheriffsCalifornia Department of Fish and WildlifeCalifornia National GuardU.S. Drug Enforcement Administration 2021 375,000 cannabis plants and 33,480 pounds of harvested marijuana Largest seizure ever in Los Angeles County, worth over one billion dollars. Oregon State Police White City, Oregon 2021 500,000 pounds of harvested marijuana More than 100 people were arrested along with the seizure marijuana worth approximately $500 million. Operation Caribbe Canadian Armed Forces Caribbean 2006–2021 or later Over 6.7 tonnes of seized cannabis, 105 tonnes of cocaine Included operations by attack submarines HMCS Corner Brook in 2008 and 2011, and HMCS Victoria in 2014. Federal-state-tribal interagency Navajo Reservation near Shiprock, New Mexico 2020 260,000 plants Over 1,000 greenhouses raided; probably a mix of hemp and THC-bearing cannabis, employed many non-US persons. Guardia Civil and Policía Foral Spain 2022 415,000 cannabis plants Worth an estimated $108 million, called largest cannabis farm in Europe with under cultivation. Yamhill County Sheriff deputies and volunteers, aided by Oregon State Police, Port of Portland PDX Task Force, Newberg-Dundee Police Department, Polk County Sheriff's Office, and Tualatin Valley Fire & Rescue Yamhill County, Oregon outside Newberg (Portland area) 2022 Over 38 tons of harvested marijuana Largest seizure in county history; farm unlicensed by Oregon Liquor and Cannabis Commission processing for illegal out-of-state sale; firearms and $80,000 in foil-wrapped cash also seized; evidence of wire transfers to Mexican state of Michoacán. Cannabis valued at $76.5 million in Oregon or $269 million on US East Coast. Sri Lanka Customs Bandaranaike International Airport 2026 Largest seizure of Kush in airport history. Carried in luggage belonging to 22 Buddhist monks who were arrested. *Assumed dried leaf or flower material unless otherwise specified. †May not be independently verified
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