British Columbia - Extreme Short Duration Rainfall Trends

Vintage Rain Chart
The following table presents short term rainfall trends for BC climate stations. The significance of trends is shown as well as the trend direction - only a few percentage of stations have a significant trend that cannot be explained by random, minor variations. 'Decreasing' means less severe annual maximum rainfall amounts observed over the specified duration. Trends are from Environment Canada's Engineering Climate Dataset v2.3 (idf_v2-3_2014_12_21_trends.txt, in IDF_Additional_Additionnel_v2.30.zip, downloaded through ftp://ftp.tor.ec.gc.ca/Pub/Engineering_Climate_Dataset/IDF/).

 British Columbia Extreme Rainfall Trends

Climate Station Name
Pr.
Extreme Rainfall Trend

Decreasing / Significant

Decreasing / Not Significant

No Data

Increasing / Not Significant

Increasing / Significant
5 min
     10 min
             15 min
                30 min
1 hr
          2 hr
6  hr
                12 hr
24 hr
Lake Cowichan
BC  
3
3
3
3
2
4
2
2
2
Jordan River Diversion
BC  
3
3
3
3
2
2
4
4
4
Jordan River Generating
BC  
3
3
3
3
4
4
4
4
4
North Cowichan
BC  
3
3
3
3
4
4
4
4
2
Port Renfrew
BC  
3
3
3
3
3
4
4
2
2
Saanich Camosun College
BC  
3
3
3
3
4
4
4
4
4
Saturna Capmon
BC  
2
2
2
2
2
2
4
5
4
Victoria Gonzales Hts
BC  
4
4
4
4
5
5
4
4
4
Victoria Intl A
BC  
4
4
4
4
4
4
4
4
4
Victoria Marine
BC  
4
4
4
4
4
4
4
5
4
Victoria U Vic
BC  
3
4
4
4
4
4
4
4
4
Campbell River A
BC  
4
4
4
4
4
2
2
4
2
Campbell River Stp
BC  
2
2
2
2
2
2
2
4
2
Comox A
BC  
4
2
4
2
4
4
4
4
4
Courtenay Puntledge Bchp
BC  
3
3
3
3
5
5
5
5
4
Nanaimo A
BC  
5
5
4
4
2
2
1
1
1
Nanaimo City Yard
BC  
4
2
4
4
4
4
4
2
2
Parksville South
BC  
3
3
3
3
4
2
2
2
3
Nanaimo Departure Bay
BC  
3
3
3
3
4
4
4
4
4
Port Hardy A
BC  
4
4
4
4
5
4
2
1
2
Strathcona Dam
BC  
3
3
3
3
4
4
4
2
4
Amphitrite Point
BC  
2
4
4
5
4
4
4
5
4
Carnation Creek Cdf
BC  
3
3
3
3
4
4
4
4
4
Estevan Point
BC  
3
3
3
3
3
2
2
3
2
Port Alberni A
BC  
4
4
4
4
4
4
5
5
4
Tofino A
BC  
4
4
4
2
4
4
4
5
4
Clowhom Falls
BC  
3
3
3
3
4
4
4
4
4
Daisy Lake Dam
BC  
3
3
3
3
4
2
2
2
4
Gibsons
BC  
3
3
3
3
4
4
4
4
4
Merry Island Lightstation
BC  
3
3
3
3
4
2
2
2
2
Port Mellon
BC  
3
3
3
4
3
4
5
4
4
Powell River A
BC  
1
2
2
1
2
2
2
2
2
Squamish Aut0
BC  
3
3
2
2
2
2
4
4
4
Whistler
BC  
4
2
2
2
4
4
4
4
4
Langara
BC  
1
4
4
4
4
4
2
2
2
Moresby Island Mitchell Inlet
BC  
2
2
2
2
2
2
2
2
2
Sandspit A
BC  
4
4
4
4
2
2
2
2
2
Bella Coola A
BC  
4
5
5
5
5
5
4
4
2
Bella Coola Bc Hydro
BC  
4
2
2
1
2
2
2
2
2
Kitimat
BC  
3
3
3
3
4
4
4
4
5
Prince Rupert A
BC  
2
2
2
4
4
4
4
4
4
Stewart A
BC  
2
4
4
4
4
4
4
2
2
Terrace A
BC  
4
4
4
4
2
2
4
4
4
Terrace Pcc
BC  
4
4
4
4
4
4
4
4
4
Quick
BC  
3
2
2
3
4
2
2
2
2
Smithers A
BC  
4
4
4
4
4
4
2
2
2
Lajoie Dam
BC  
3
3
3
3
2
2
2
2
2
Pemberton Bcfs
BC  
3
3
3
3
5
5
5
5
5
Southbank
BC  
3
4
2
3
2
2
4
2
2
Burns Lake
BC  
4
4
2
4
4
4
2
2
2
Fort St James
BC  
3
3
3
3
4
4
4
4
4
Fort St James A
BC  
4
4
4
4
2
2
4
4
4
Horsefly Bcfs
BC  
3
3
3
3
5
5
4
4
2
Kersley
BC  
3
3
3
3
2
2
2
2
2
Mcbride Elder Creek
BC  
3
3
3
3
4
4
4
4
4
Mcbride North
BC  
3
3
3
3
4
4
5
5
5
Prince George A
BC  
2
2
4
4
4
2
2
2
2
Williams Lake A
BC  
2
2
3
4
3
3
3
3
2
Abbotsford A
BC  
4
4
4
4
4
4
2
4
2
Agassiz Cs
BC  
4
4
4
4
4
4
4
4
4
Alouette Lake
BC  
3
3
3
3
4
4
4
4
4
Buntzen Lake
BC  
3
3
3
3
4
4
4
4
4
Chilliwack Microwave
BC  
3
3
3
3
1
1
2
2
1
Coquitlam Lake
BC  
3
3
3
3
2
5
4
2
2
Haney Microwave
BC  
3
3
3
3
1
1
2
2
2
Haney Ubc Rf Admin
BC  
3
3
3
3
4
2
2
2
2
Huntingdon Vye Road
BC  
3
3
3
3
2
2
4
4
4
Ladner Bchpa
BC  
3
3
3
3
4
4
2
2
1
Langley Lochiel
BC  
3
3
3
3
2
2
4
2
2
Mission West Abbey
BC  
4
4
4
2
2
2
4
4
4
N Vancouver Lynn Creek
BC  
2
4
2
4
4
4
4
4
2
Pitt Polder
BC  
4
4
4
4
4
4
2
2
2
Port Coquitlam City Yard
BC  
2
2
2
2
4
4
2
2
2
Port Moody Glenayre
BC  
3
3
3
3
4
4
2
2
2
Surrey Kwantlen Park
BC  
4
4
4
4
4
4
4
4
2
Surrey Municipal Hall
BC  
3
3
2
2
4
4
2
2
2
Vancouver Harbour Cs
BC  
4
4
4
4
4
4
2
2
2
Vancouver Intl A
BC  
4
4
4
4
4
4
2
2
2
Vancouver Kitsilano
BC  
4
2
2
2
2
2
2
4
2
Vancouver Ubc
BC  
4
2
2
2
2
2
2
2
2
White Rock Stp
BC  
4
4
4
4
4
4
4
4
4
Pitt Meadows Stp
BC  
3
3
3
3
2
2
2
2
4
Burnaby Mtn Bchpa
BC  
3
3
3
3
4
4
4
2
4
N Vanc Sonora Dr
BC  
2
1
2
2
2
2
2
4
4
Hells Gate
BC  
3
3
3
3
1
1
2
2
2
Hope A
BC  
4
4
4
4
4
4
4
4
4
Lillooet Seton Bchpa
BC  
3
3
3
3
4
4
4
4
4
Lytton
BC  
3
4
4
4
4
4
4
4
4
Shalalth
BC  
3
3
3
3
4
4
4
4
4
Kelowna A
BC   
4
4
4
4
4
4
4
4
4
Kelowna Pc Burnetts Nursery
BC  
2
2
2
2
4
4
4
4
4
Oliver Stp
BC  
3
3
3
3
4
4
4
4
4
Penticton A
BC  
4
4
4
4
4
4
4
4
4
Princeton A
BC  
2
2
2
2
2
2
4
4
4
Summerland Cs
BC  
4
4
4
4
4
4
2
4
4
Vernon
BC  
4
4
4
4
4
4
4
4
4
Castlegar A
BC  
4
4
4
2
2
4
4
4
4
Castlegar Bchpa Dam
BC  
4
4
4
4
4
4
5
5
4
Creston Wpcc
BC  
4
4
4
4
4
4
4
4
5
Duncan Lake Dam
BC  
2
2
2
2
2
2
2
2
2
Fauquier
BC  
3
3
3
3
4
4
4
2
2
Trail Birchbank
BC  
3
3
3
3
4
5
5
5
4
Cranbrook A
BC  
4
4
4
4
4
4
4
4
4
Kimberley Pcc
BC  
3
3
3
3
2
2
4
4
4
Sparwood
BC  
4
4
4
4
4
2
2
4
4
Blue River A
BC  
4
4
4
4
4
4
4
5
5
Kamloops A
BC  
4
4
4
4
4
5
5
5
5
Salmon Arm A
BC  
4
4
4
4
4
2
2
2
4
Golden A
BC  
2
2
1
1
1
2
2
4
4
Mica Dam
BC  
3
3
3
3
3
3
4
2
2
Revelstoke Airport Rd
BC  
4
4
4
4
4
4
4
2
4
Valemount North
BC  
3
3
3
3
4
4
4
2
2
Yoho Nat Park Boulder Cr
BC  
3
3
3
3
4
4
4
5
5
Chetwynd A
BC  
4
4
4
4
4
4
2
4
4
Dawson Creek A
BC  
4
4
4
4
4
4
2
2
2
Fort St John A
BC  
2
2
2
2
2
2
2
2
2
Germansen Landing
BC  
4
2
2
2
2
4
4
4
4
Hudson Hope Bchpa Dam
BC  
2
2
1
1
1
1
1
1
1
Mackenzie A
BC  
2
2
2
2
2
2
2
2
2
Sikanni Chief
BC  
2
2
2
2
2
2
2
2
2
Ware
BC  
3
3
3
3
4
4
4
4
4
Dease Lake
BC  
4
2
4
4
4
4
4
4
4
Fort Nelson A
BC  
4
4
4
4
4
2
2
2
2
Muncho Lake
BC  
4
4
4
4
4
4
4
2
2
Tetsa River
BC  
2
2
2
2
2
2
1
2
2
Atlin
BC  
4
4
4
4
4
4
4
2
2
Pleasant Camp
BC  
4
2
2
2
2
2
2
2
2
Telegraph Creek
BC  
3
3
3
3
2
4
4
4
4
Todagin Ranch
BC  
3
3
3
3
4
4
2
4
4

Extreme rainfall trends in Canada (Environment Canada Engineering Climate Datasets):

Static Maps: http://www.cityfloodmap.com/2015/12/severe-storm-trends-canada-rainfall.html

Interactive Map: http://www.cityfloodmap.com/2015/12/canadian-extreme-rainfall-map-climate.html

Table Summaries: http://www.cityfloodmap.com/2015/12/canadian-extreme-rainfall-summary-by.html

Chart and Table: http://www.cityfloodmap.com/2015/12/top-weather-story-in-canada-2015-less.html

Long-term Station Table: http://www.cityfloodmap.com/2015/12/long-term-climate-change-short-term.html

Environment Canada Denies Changes: http://www.cityfloodmap.com/2015/10/bogus-statements-on-storms-in-cbcnewsca.html

Contradicting Insurance Industry Claims: http://www.cityfloodmap.com/2015/12/trends-in-canadian-shortduration.html

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