| Revised by av & sc, July 2003 | ||||||||||||||||
| 1986 Global Register of Extreme Flood Events | ||||||||||||||||
| DFO # | Location | Detailed Locations | Began (mm/dd/yy) |
Ended (mm/dd/yy) |
Duration (days) |
Dead | Displaced | Damage (USD) |
Main Cause |
Secondary cause |
Recurrence Interval (Anecdotal) |
Severity Class* |
Hectares Flooded |
Hayden Code |
Affected Region (sq km) |
Flood Magnitude** |
| 1986-047 | Southwestern Brazil | States: Rio de Janeiro, Sao Paulo, Minas Gerais. Cities: Copacabana, Rio de Janeiro | 12/23/86 | 01/01/87 | 10 | 29 | 7,000 | Brief torrential rain | See notes | 1 | Tpo | 275,500 | 12.1 | |||
| 1986-046 | Vietnam | Central Vietnam - Provninces: Nghia Binh, Phu Khanh, Quang Nam Da Nang, Thuan Hai a Gialai-Kontum. | 12/03/86 | 12/05/86 | 3 | 165 | Heavy rain | 1 | 10,000 | Tpz | 49,610 | 2.4 | ||||
| 1986-045 | Southwest Iran | Provinces: Shiraz, Bushehr, Khuzestan, Buir Ahmad. Izeh in the Zagros Mountains, Behbahan, Shahruj, Masjid Sulaiman. | 11/30/86 | 12/11/86 | 12 | 200 | 40,000 | Heavy rain | See notes | 1 | Cs | 155,900 | 9.8 | |||
| 1986-044 | US West | Western Washington - Lewis, King, Skagit, a Whatcom counties. Towns: Snoqualmie, Glacier. Rivers: Skykomish, Snohomish, Skagit a Puyallup, Boulder Creek | 11/23/86 | 11/26/86 | 4 | 0 | 2,000 | Rain and snowmelt | Worst flooding since 1959 | 2 | Cp | 26,880 | 4.5 | |||
| 1986-043 | Ionesia | Southern Sumatra - Bengkulu a Lampung provinces. Central Java - 23 villages | 10/27/86 | 11/03/86 | 8 | 93 | 31,000 | $12,800,000 | Heavy rain | See notes | Worst in the history of Lampung Province | 3 | Tpz | 79,460 | 17.6 | |
| 1986-042 | Haiti | La Gonave Isla off Haiti's west coast | 10/23/86 | 10/25/86 | 3 | 40 | 901 | Heavy rain | 1 | Tpo | 1,153 | 0.4 | ||||
| 1986-041 | Alaska | Areas north a south of Anchorage, Talkeetna, Seward, Matanuska-Susitna Borough, Cordova a Willow. Montana a Sheep creeks | 10/09/86 | 10/15/86 | 7 | 0 | 1,500 | $20,000,000 | Heavy rain | 1 | CSs** | 43,700 | 4.1 | |||
| 1986-040 | Philippines | Luzon Isla - Manila a surrouing provinces | 10/06/86 | 10/07/86 | 2 | 18 | 60,000 | Heavy rain | 1 | Tpo | 24,920 | 1.1 | ||||
| 1986-039 | Tunisia | Cap Bon region of northern Tunisia: Tunis, Governorates of Tunis, Ben Arous, Ariana, Zaghouan, Nabeul, Kairouan, Kasserine, Bizerte, Beja, Jeouba | 09/30/86 | 10/03/86 | 4 | 20 | 500 | Brief torrential rain | 1 | TsuCs | 12,640 | 1.6 | ||||
| 1986-038 | US Midwest | Illinois - Lake a northern Cook counties. Chicago's nothern suburbs; Grafton, East St. Louis. Rivers: Des Plaines, Illinois, Mississippi, Mackinaw. Oklahoma - Washington County. Bixby - (a Tulsa suburb), Tahlequah, Muskogee, Bartlesville, Hulah, Copan, Dewey, Enid, Blackwell, Kingfisher, Guthrie, Coyle, Dover, Miami, Moffett. Rivers: Chikaskia, Caney, Arkansas, Neosho. Missouri - Rhinela a Hermann in Montgomery County; St. Louis a St. Charles Counties; Portage des Sioux, West Alton. Rivers: Missouri, Mississippi, Blackwater, Meramec. Flooding also reported in Michigan, Minnesota, Kansas, Ohio. | 09/26/86 | 10/13/86 | 18 | 10 | 55,000 | $40,000,000 | Heavy rain | worst in Oklahoma history | 3 | TsuCpSe* | 107,600 | 28.4 | ||
| 1986-037 | Iia a Bangladesh | Iia - West Bengal state, Calcutta area a districts of Hooghly, Howarah, Parganas, a Midnapore. Ganges River. Bangladesh - 25 districts including: Khulna, Bagerhat, Sathkhira, Pathuakhali, Barguna, Jessore, Faridpur; Dhaka a Chittagong areas. Teesta a Jamuna rivers | 09/22/86 | 10/10/86 | 19 | 49 | 700,000 | Heavy rain | 1 | 748,507 | Tszo | 231,500 | 14.2 | |||
| 1986-036 | US West | North-central Montana - Fort Belknap Reservation, Phillips County. Towns: Malta, Harlem, Saco. Flooding along the Milk River a its tributaries from Chinook to Nashua | 09/25/86 | 10/05/86 | 11 | 1 | 700 | $36,000,000 | Heavy rain | "worst in 30 years along the Canadian border" | 2 | CpSe | 49,270 | 10.6 | ||
| 1986-035 | US Midwest | Michigan's Lower Peninsula - Oceano County: towns of Pentwater a Hart, Pentwater River, dam burst at Hart Lake. Gratiot County: Rainbow Lake Dam collapsed flooding the Maple River. Tittabawasee River at Midla. Rogue River at village of Belmont. Saginaw River at Saginaw. Cass River at Vassar. Clinton, Ionia a Gratiot counties. Southeastern Wisconsin - Sheboygan a Fo du Lac Counties | 09/09/86 | 09/17/86 | 9 | 6 | 4,000 | $323,000,000 | Brief torrential rain | "The hardest-hit areas appear to have suffered the worst flood in modern history". "worst flooding in the state's history" (Michigan) | 2 | TsuCpS*** | 53,940 | 10.2 | ||
| 1986-034 | Northern Mexico | Nuevo Leon state, Monterrey city, Santa Catarina a Topo Chico rivers. | 09/04/86 | 09/08/86 | 5 | 20 | 5,000 | Heavy rain | 1 | Tso | 14,130 | 1.9 | ||||
| 1986-033 | US South | Western Texas - Alpine, Alpine Creek. Big Spring, Crane, Midla, Odessa | 09/02/86 | 09/05/86 | 4 | 3 | Heavy rain | 1 | Tso | 49,460 | 3.1 | |||||
| 1986-032 | Azores Islas | Sao Miguel Isla - Nordeste, Povoacao, Mosteiros | 09/01/86 | 09/02/86 | 2 | 3 | Brief torrential rain | 1 | TsuCs | 982 | 0.2 | |||||
| 1986-031 | US Southeast | South Carolina - Scott Creek in Newberry. Union County, Lockwood | 08/18/86 | 08/21/86 | 4 | 2 | 125 | Heavy rain | 1 | TsoCp | 3,756 | 0.8 | ||||
| 1986-030 | Uruguay | Eastern a southern departments - Cebollati a Santa Lucia Rivers. | 08/04/86 | 08/16/86 | 13 | 16,000 | Heavy rain | 1 | TsoCp | 48,990 | 5.7 | |||||
| 1986-029 | Southeast Iia | Ahra Pradesh State - Districts:East Godavari, Adilabad a Khammam. Godavari River | 08/15/86 | 08/22/86 | 8 | 150 | 3,000,000 | $717,000,000 | Monsoonal rain | 1 | 404,687 | Tpz | 107,200 | 6.8 | ||
| 1986-028 | US Midwest | Southeastern Wisconsin - Milwaukee, Burlington,Wauwatosa. Menomonee River | 08/06/86 | 08/06/86 | 1 | 1 | 250 | Brief torrential rain | 1 | TsuCpS*** | 6,563 | 0.1 | ||||
| 1986-027 | Japan - Typhoon Sarah | Prefectures: Tochigi, Ibaraki, Miyagi, Ibaragi a Shizuoka. Towns: Ishige. Kogai River. | 08/05/86 | 08/08/86 | 4 | 17 | 3,000 | 21 | See notes | 1 | TsoCpSe* | 16,940 | 1.8 | |||
| 1986-026 | Northern Vietnam | Quang Ninh, Lang Son, Ha Bac, Bac Thai a Hai Hung provinces. Cities: Lang Son, Thai Nguyen. Red River | 07/25/86 | 08/04/86 | 11 | Heavy rain | 1 | 1,530,000,000 | Tpz | 66,100 | 6.2 | |||||
| 1986-025 | Northern China | Jilin Province. Heilongjiang Province, Daqing area, Songhua River | 06/25/86 | 08/24/86 | 61 | 800,000 | $1,200,000,000 | Brief torrential rain | 1 | TspCpSe* | 604,400 | 32.0 | ||||
| 1986-024 | Iia a Bangladesh | Iia - States: Uttar Pradesh, Madhya Pradesh, Bihar. Ganges River Bangladesh - Chapainawabganj district. Rajshahi Region, Ganges River | 06/15/86 | 08/20/86 | 67 | 258 | 3,040,000 | Monsoonal rain | 1 | 414,398 | Tszo | 506,500 | 29.9 | |||
| 1986-023 | Southern China -typhoon | Coastal areas of Guangxi Zhuang autonomous region. Counties: Hepu, Qinzhou a Fangcheng. Nanning city. Yongjiang River. | 07/21/86 | 07/31/86 | 11 | 73 | 50,000 | $42,248,463 | Tropical cyclone | See notes | 1 | 48,000 | TsoCp | 116,900 | 8.2 | |
| 1986-022 | Canada | Central a northern Alberta; Edmonton. Rivers: North Saskatchewan, Pembina | 07/18/86 | 07/22/86 | 5 | 0 | 1,000 | $72,000,000,000 | Heavy rain | See notes | worst since 1915 | 2 | CSs** | 47,000 | 7.0 | |
| 1986-021 | Columbia | Eastern Provinces: Aracua, Casanare, Guainia, Guaviare. | 07/10/86 | 07/30/86 | 21 | 4 | 28,000 | $2,500,000 | Heavy rain | 1 | Tpz | 199,500 | 13.6 | |||
| 1986-020 | Philippines a Eastern China- Typhoon Peggy | Philippines - Luzon Isla. Provinces: Nueva Ecija, La Union, Cagayan, Tarlac, Pangasinan. low-lying areas in Manila, Baguio. China - Guangdong Province, Jiexi a Puning counties. Lufeng town | 07/09/86 | 07/13/86 | 5 | 103 | 530,000 | $165,500,000 | 21 | 1 | 259,809 | Tpz. Tszo | 46,630 | 3.5 | ||
| 1986-019 | US Midwest | Iowa - West Des Moines, Van Meter, Des Moines. Raccoon River . Nebraska - town of DeWitt. Big Blue River, Turkey a Swan Creeks | 07/01/86 | 07/02/86 | 2 | 1 | 640 | $3,000,000 | Heavy rain | Racoon a Big Blue rivers reach record levels | 2 | 85,794 | TsuCpSe* | 6,980 | 1.2 | |
| 1986-018 | US South - Hurricane Bonnie | Northwestern Lousiana - Shreveport area, Caddo a Bossier parishes. Eastern Texas - Beaumont, Rye, Liberty County. Trinity River | 06/27/86 | 06/30/86 | 4 | 1 | 1,000 | $5,000,000 | Brief torrential rain | See notes | 1 | TsuCpSe* | 25,820 | 2.2 | ||
| 1986-017 | Chile | Central Chile - Santiago area, Curico; rural districts of Talca a Rengo, regions of O'Higgins a Maule. Mapocho River | 06/15/86 | 06/18/86 | 4 | 40 | 45,000 | Heavy rain | 1 | Cp | 27,960 | 2.3 | ||||
| 1986-016 | Jamaica, Haiti, Cuba a Dominican Republic - tropical storm Arew | Jamaica - southern a western parishes, Kingston area, Savanna La Mar, May Pen, Old Harbor Bay, Lucie. Wag Water River. Dominican Republic - Santo Domingo city. Haiti - area arou Les Cayes city. Cuba - eastern a central provinces: Guantanamo, Santiago de Cuba, Granma, Las Tunas, Holguin a Camaguey. | 06/04/86 | 06/15/86 | 12 | 94 | 11,860 | $25,000,000 | Heavy rain | See notes | Jamaica: similiar to 1979 floods. Haiti: worst in decades | 1 | 1,618 | Tpo | 81,750 | 7.1 |
| 1986-015 | US Southwest | Central Texas - Bexar County; Dallas area, San Antonio, Del Rio, De Leon, Abilene, Comanche, Sweetwater, Spleora. Rivers: San Antonio, Olmos Creek, Peach Creek | 05/31/86 | 06/11/86 | 12 | 10 | 3,500 | Brief torrential rain | 1 | Tsu | 26,900 | 4.1 | ||||
| 1986-014 | US East | Pennsylvania - northern Allegheny County. Pittsburgh's northern suburbs: Etna, Iiana, O'Hara a Shaler townships. Allegheny River tributaries Pine Creek a Little Pine Creek | 05/30/86 | 05/31/86 | 2 | 8 | 10 | $20,000,000 | Brief torrential rain | See notes | 1 | TsuCpSe* | 1,700 | 0.3 | ||
| 1986-013 | Chile | Cities: Valparaiso, Santiago, Concepcion, San Antonio | 05/27/86 | 05/29/86 | 3 | 8 | 17,000 | Brief torrential rain | See notes | 1 | Cp | 27,960 | 1.8 | |||
| 1986-012 | US Southwest | Texas - Fort Worth area. Marine Creek | 05/24/86 | 05/24/86 | 1 | 3 | 100 | Brief torrential rain | See notes | 1 | Tsu | 5,250 | 0.1 | |||
| 1986-011 | Solomon Islas - Cyclone Namu | Islas - Malaita, Makira, eastern e of Guadacanal. | 05/19/86 | 05/20/86 | 2 | 10,000 | Tropical cyclone | 1 | Tpz | 28,740 | 1.2 | |||||
| 1986-010 | Central US | Southeast Missouri: Cape Girardeau, Scott a Madison Counties | 05/15/86 | 05/15/86 | 1 | 3 | $100,000,000 | Brief torrential rain | 1 | TsuCpSe* | 6,446 | 0.1 | ||||
| 1986-009 | Thaila | Bangkok city. Provinces: Uthai Thani, Kamphaeng Pit, Rayong, Ratchaburi | 05/09/86 | 05/12/86 | 4 | 32 | $3,850,000 | Monsoonal rain | 2 | 32,260 | Tpz | 83,430 | 8.0 | |||
| 1986-008 | Iran | Central Iran - Provinces: Isfahan, Hamedan, Lorestan a Khuzestan. | 05/02/86 | 05/06/86 | 5 | 26 | 1,000 | $30,000,000 | Heavy rain | 1 | Cs | 206,300 | 7.3 | |||
| 1986-007 | Brazil | Northeast Brazil - Pernambuco state. Towns: Mombaca, Procoto a Cavalos | 04/23/86 | 04/25/86 | 3 | 11 | Brief torrential rain | See notes | 1 | Tpo | 155,300 | 4.3 | ||||
| 1986-006 | Argentina | Northern Argentina - Provinces: Chaco, Entre Rios, Formosa, Santa Fe. | 04/11/86 | 05/07/86 | 27 | 2 | 55,000 | Heavy rain | 1 | 176,000 | TspCp | 269,500 | 17.1 | |||
| 1986-005 | Central US | Wisconsin - Towns: Green Bay, Oconto. Rivers: East, Oconto, Suamico a Duck Creek. Michigan - Osceola County. Town: Evart. Muskegon River. Minnesota a upper Mississippi rivers | 03/27/86 | 04/05/86 | 10 | 2 | 496 | $200,000 | Ice jam/break-up | 1 | TsuCpSe* | 4,325 | 1.5 | |||
| 1986-004 | Peru a Bolivia | Peru - Lake Titicaca region:15 villages as well as the provincial capital, Puno. Bolivia - Lake Titicaca region, Guaqui a Desaguadero. Santa Cruz province | 02/01/86 | 05/01/86 | 90 | 300,000 | $50,000,000 | Brief torrential rain | Bolivia "worst this century " | 3 | Tsu | 94,880 | 41.6 | |||
| 1986-003 | Western US | Northern a Central California - Napa, Humbolt, Sonoma a Yuba Counties. Towns: Napa, Guerneville, Lia. Rivers: Russian, Napa, Eel, Yuba Western Nevada: Towns: Reno. Rivers: Truckee | 02/12/86 | 02/27/86 | 16 | 18 | 30,000 | $319,000,000 | Brief torrential rain | worst flooding in Napa since 1955 | 2 | TsoCs | 88,740 | 16.5 | ||
| 1986-002 | Bolivia | Northeast Bolivia - Cochabamba a La Paz region. Towns: Villa Fatima, Nueva Esperanza, Tocopilla. Chapare River | 01/06/86 | 04/03/86 | 88 | 30 | 11,300 | $42,000,000 | Heavy rain | "worst this century" | 2 | 35,000 | Tsu | 62,580 | 22.4 | |
| 1986-001 | Western a Central US | Oregon - Towns: Ontario, Nyssa. Rivers: Snake. Idaho - Snake River. Michigan - Towns: Algonac. Rivers: St. Clair, Muskegon | 01/01/86 | 01/06/86 | 6 | 100 | Ice jam/break-up | 1 | 500 | TsuCpSe* | 1,743 | 0.7 | ||||
| Yearly Totals or Averages | 13.3 | 1,554 | 8,862,982 | $75,157,098,463 | 1,532,216,573 | 4,153,428 | ||||||||||
| An archive number is assigned to any flood that appears to be "large": significant damage to structures or agriculture, long intervals since the last similar event, and/or fatalities | ||||||||||||||||
| *Severity assessment is on 1-3 scale | ||||||||||||||||
| Class I: large flood events: significant damage to structures or agriculture; fatalities; and/or 1-2 decades-long reported interval since the last similar event. | ||||||||||||||||
| Class 2: very large events: greater than 20 yr but less than 100 year recurrence interval, and/or a local recurrence interval of at 10-20 yr. | ||||||||||||||||
| Class 3: Extreme events: with an estimated recurrence interval greater than 100 years | ||||||||||||||||
| **Flood Magnitude = ln(duration) * severity class * sqrt(affected region)/100 {if duration=1, then duration is set at 1.1 for this calculation.} | ||||||||||||||||
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