| 1939 | | Hillcrest, AB: Hillcrest Collieries mine shut down. |
| 1939 | | Lumberton, BC: B.C. Spruce Mills Company shuts down its sawmill, leaving only the planer mill in operation. |
| 1939 | | B.C.: Peter “the Purger” Verigin dies: the Doukhobor debt bought by the B.C. government and assets leased back to the Community. |
| 1939 | | Osoyoos, BC: Rialto Hotel completed. |
| 1939 | | Jaffray, BC: Farmers’ Institute builds second hall. |
| 1939 | | Nelson, BC: Lord Nelson Hotel completed. |
| 1939 | | Burmis, AB: H.G. Allen of Calgary buys Burmis Lumber Company. |
| 1939 | | B.C.: S.R. Cummings and family built their resort at Akokli Creek on Kootenay Lake. |
| 1939 | | Brilliant, BC: Airstrip laid out as part of the Trans-Canada Airway. |
| 1939 | | Lethbridge, AB: RCMP donates “Barrack Square” to City. |
| 1939 | | Blairmore, AB: Sisters of St. Martha open their St. Alphonsus Convent in the Crowsnest RC Parish. |
| 1939 | | CNP Coal begins settleing mine managers on the future Sparwood, BC, townsite. |
| 1939 | | Eastern British Columbia rail line up Michel Creek valley in BC stripped of steel. |
| 1939 | | Wynndel, BC: Alf Farstad and Donald Burns bought up Wynndel Limits and Lumbering Company. |
| 1939 | | Hedley, BC: Two-storey elementary school completed. |
| 1939 | January | J.J. Warren dies. Lorne Argyle Campbell takes over as president of West Kootenay Power. |
| 1939 | Jan. 29 | Hedley, BC: Two die due to rockfall from Stemwinder Mountain. |
| 1939 | February | Lethbridge, AB: Lethbridge Flying Training School, Limited, moved to new airport. |
| 1939 | Feb. 12 | The Trail Smoke Eaters win the World Chmapionship in Zurich, Switzerland. |
| 1939 | Spring | AB: RAIN! |
| 1939 | Apr.1 | Lethbridge, AB: Regular passenger service commenced out of new airport, “Kenyon Field.” |
| 1939 | Apr. 29 | Fruitvale, BC: Wild fire rips through the Beaver Creek’s valley nearby. |
| 1939 | June 3 | Federal political: Ottawa passes Prairie Farm Assistance Act. Crop insurance. |
| 1939 | June 7 | Lethbridge, AB: The Department of Transport declares “Kenyon Field” officially open. |
| 1939 | June 7 | Lethbridge, AB: “Kenyon Field” becomes an “international” port when Inland Airlines of Wyoming granted landing rights. |
| 1939 | June 22 | Fruitvale, BC: St. Paul’s United Church building dedicated. |
| 1939 | July 1 | Kimberley, BC: Mark Creek Store robbed. |
| 1939 | September | B.C.: GN’s Vancouver, Victoria & Eastern Railway strips its railbed between Hedley and Princeton. |
| 1939 | Sep. 10 | Federal political: Canada declares war on Germany. |
| 1939 | Autumn | AB: Bountiful harvest. |
| 1939 | Autumn | AB: 21,500 acres of sugar beets harvested. |
| 1939 | Sep. 23 | B.C.: The Waldo Stockbreeders Livestock Association formed. Ellis Sweet, president. |
| 1939 | Nov. 2 | Federal political: Department of Transport forms the air Services Branch to establish an “airway,” a highway in the air, in Canadian airspace. |
| 1939 | Dec. 2 | Hillcrest, AB: Hillcrest-Mohawk Collieries seals the Hillcrest mine. |
| 1939 | Dec. 10 | Lethbridge, AB: City council decides to scrap the tramline system. |
| 1939 | Dec. 17 | Federal political: Agreement signed in Ottawa creating the British Commonwealth Air Training Program. |
| 1939 | Dec. 23 | Lethbridge, AB: Kenyon Field designated a military installation. |
| 1940 | | Federal political: National Registration Act. Resistance by Doukhobors. |
| 1940 | | Hope, BC: CPR renames “Pétain” yards nearby “Odlum.” |
| 1940 | | B.C.: Record year for shipping east shore apples from Kootenay Lake, BC. |
| 1940 | | Yahk, BC: Community hall completed. |
| 1940 | | Sand Creek, BC: “Sand Creek Superior School” closed. |
| 1940 | | Northwest Grain Dealers Association changes name to Northwest Line Elevators Assoc. |
| 1940 | March | Lethbridge, AB: Lethbridge Flight Training School managed by Robert Wilkinson begins running the No. 5 Elementary Flying Training School at Kenyon Field. |
| 1940 | Mar. 21 | AB election: Aberhart and Social Credit re-elected. |
| 1940 | Mar. 31 | Osoyoos, BC: Osoyoos Mines of Canada, Limited, ceases mining on Kruger Mountain nearby. |
| 1940 | Mar. 26 | Election, federal: Mackenzie’s Liberals returned to power. |
| 1940 | Apr. 8 | Blakeburn, BC: At 1600 hours the last shift leaves Coalmont Collieries’ No. 5 mine. In total the company’s mines output over 2.1 million tons of coal. |
| 1940 | June 15 | Blakeburn, BC: The postal bureau closes. |
| 1940 | June 21 | National Resources Mobilization Act passed. |
| 1940 | July 13 | Galloway, BC: M. Dumont Co. saw and planer mills burn. Rebuilt. |
| 1940 | July 16 | CP wins permission to abandon its four miles of trackage between Okanagan Landing and Vernon, BC. Rails lifted by August. |
| 1940 | Sep. 27 | Lethbridge, AB: Department of Transport leases the Kenyon Field. |
| 1940 | December | Cranbrook Sash and Door buys the Lumberton, BC, operation. |
| 1940 | Dec. 18 | Macleod, AB: Air base officially opened for training British Commonwealth Air Training Program personnel. |
| 1941 | | B.C.: Great Northern suspends passenger service on the Nelson and Fort Sheppard Railway. |
| 1941 | | Princeton, BC: A.R. Watkins begins short-lived dredging operations on the Similkameen River upstream from town. |
| 1941 | | Spokane International Railway re-organized out of receivership as the Spokane International Railroad. |
| 1941 | | AB: Canadian Gulf Oil Company identified a ridge in the Madison formation as a likely deposit of petroleum. |
| 1941 | | Bellevue, AB: Record year of production from West Canadian Collieries’ Bellevue mine. |
| 1941 | | Sanca, BC: Sanca Mines, Limited, closed Valparaiso mine. |
| 1941 | | Lethbridge, AB: Sewerage system extended to Stafford. |
| 1941 | | Cowley, AB: Alvin Murphy strings a power grid connected to East Kootenay Power at Sentinel, AB. |
| 1941 | Mar. 11 | In addition to the fine levied by the International Joint Commission in 1932, Consolidated Mining and Smelting pays a further compensation to Washington farmers for polluting the air. |
| 1941 | May | Frank, AB: The Kerr family and Bill Cole begin building the Turtle Mountain Playground. |
| 1941 | June 20 | Lethbridge, AB: No. 5 Elementary Flying Training School sent to High River, AB. |
| 1941 | Aug. 29 | B.C. political: Lieutenant-Colonel W.C. Woodward commissioned as the lieutenant-governor. |
| 1941 | Sep. 15 | Lethbridge, AB: J.J. Hamilton Coal Company seals the old Sheran works. |
| 1941 | October | Lethbridge, AB: City power plant converted to burn natural gas. City #1 coal mine closed. |
| 1941 | Oct. 21 | B.C. election: Pattullo and Liberals win re-election. |
| 1941 | Nov. 8 | Lethbridge, AB: No. 8 Bombing and Gunnery School arrives on Kenyon Field. |
| 1941 | Dec. 7 | Japanese attack Pearl Harbour. |
| 1941 | Dec. 7 | Canada declares war on Japan. |
| 1941 | Dec. 8 | U.S. declares war on Japan. |
| 1941 | Dec. 8 | Japanese attack Canadian garrison on Hong Kong. |
| 1941 | Dec. 9 | B.C. political: T.D. Pattullo resigns and succeeded by John Hart and Coalition government. (to December 29, 1947). |
| 1941 | Dec. 11 | Germany declares war on the U.S. |
| 1941 | Dec. 15 | Penticton, BC: New Kettle Valley Railway station. |
| 1941 | Dec. 25 | Hong Kong falls to Japanese, Canadian garrison captured. |
| 1942 | | Fairview, BC: Kelowna Exploration Company, Limited, takes option on Fairview Amalgamated’s properties. |
| 1942 | | B.C.: Cranbrook Sash & Door sold the Lumberton townsite to W.H. Horner for salvage. |
| 1942 | | WA: Grand Coulee Dam completed. |
| 1942 | | Lethbridge, AB: Internment Camp No. 133 tied into City sewerage system. |
| 1942 | | B.C.: Province begins issuing permits to harvest Xmas trees on Crown land. |
| 1942 | | Sanca, BC: Sanca school closed. Students to Boswell. |
| 1942 | | Creston, BC: First “Blossom Festival.” |
| 1942 | | B.C.: Government buys CP’s old Bonnington and removes her stack and boiler for installation in the Kootenay Lake ferry, Nasookin. |
| 1942 | January | Cowley, AB: Alberta Pacific grain elevator burns. Rebuilt by March. |
| 1942 | Jan. 8 | Ottawa: The Conference on Japanese Matters convened. |
| 1942 | Feb. 2 | Federal political: Canadian minister of National Defence, J.L. Ralston, classified all Japanese resident in Canada as “Enemy Aliens” and required that every male between ages eighteen and forty-five be removed 100 miles from the Coast by April 1st. |
| 1942 | Feb. 24 | Federal political: Canadian minister of Justice, Louis St. Laurent, empowered to evacuate all Japanese to places of internment at least 100 miles inland. |
| 1942 | Feb. 26 | Federal political: Round-up of ethnic Japanese begins in Canada. |
| 1942 | April | Coalhurst, AB: First contingent of Japanese internees assigned to southern Alberta arrive. In total, 2,250 placed in the region. |
| 1942 | Apr. 20 | B.C.: Agreement to build the Brilliant Dam signed between Consolidated Mining and Smelting, CP and several levels of government. |
| 1942 | May | B.C.: CNP Coal begins developing Elk River Collieries. |
| 1942 | May 2 | AB: (May 10?) Floods inundate Blairemore and Coleman. |
| 1942 | July 23 | Federal political: Canadian House of Commons approves Conscription. |
| 1942 | Aug. 17 | Salmo, BC: The federally owned Wartime Metals Corporation bought the Emerald mine nearby. |
| 1942 | Aug. 19 | The Dieppe Raid: of 5,000 Canadian troops who landed, 907 killed, 1874 captured. |
| 1942 | Sep. 26 | Princeton, BC: Fire consumes the works of the Princeton Tulameen Coal Company, Limited. |
| 1942 | Oct. 17 | Elko, BC: The Waldo Stockbreeders Livestock Association holds its first livestock auction in their new corrals. |
| 1942 | Oct. 17 | “Royal City,” AB: The Royal View—“Swedes’”—mine flooded. Abandoned within a month. |
| 1942 | Oct. 28 | Official completion date of the Alaska Highway. |
| 1942 | Nov. 28 | Lethbridge, AB: Internment Camp No. 133 opened. |
| 1942 | Dec. 1 | Coal Creek, BC: CNP Coal closed the old Colliery. |
| 1942 | Dec. 11 | Winnipeg. MB: Conservatives elect John Bracken as their leader and change the name of their party to the Progressive Conservative Party of canada. |
| 1942 | Dec. 29 | James Wesley Wilson and Edith Winifred Pope wed at Edith’s parents’ (Edna Maria and Frederic Austin Pope) homestead; Haven, Alberta. |
| 1943 | | Selective Services Act implemented. Doukhobors resist. |
| 1943 | | Brilliant, BC: Jam factory burnt. |
| 1943 | | AB: C.S. Donaldson takes over management of Lethbridge Collieries, Ltd. |
| 1943 | | Vancouver, BC: Coalmont Collieries shuts down its head office, having sold off everything salvageable from its mining operations at Blakeburn and Coalmont. |
| 1943 | | B.C.: Coal Mountain mined by Frank O’Sullivan of Lethbridge for Consolidated Mining and Smelting for a year ending September 23rd, 1944. |
| 1943 | | Creston, BC: Alf Farstad and Donald Burns buy C.O. Rodgers sawmill. |
| 1943 | Feb. 5 | The federal British Columbia Security Commission dissolved and administration of “Enemy Alien” internees falls to Department of Labour. |
| 1943 | May 1 | Father P.N.J. de Coccola dies at 88 years. |
| 1943 | May 23 | “Bible Bill” Aberhart dies. |
| 1943 | May 31 | AB political: E.C. Manning succeeds William Aberhart as Social Credit premier of Alberta. |
| 1943 | November | Continent-wide coal miners’ strike breaks out. |
| 1943 | Nov. 13 | Fernie, BC: CNP Coal opens Elk River Collieries on Coal Creek nearby. |
| 1943 | Dec. 4 | Princeton, BC: Granby Consolidated ceases mining coal. |
| 1944 | | Great Northern pays CP $4.5 million to escape annual payments for running-rights lease on Coquihalla Subsection. |
| 1944 | | Nelson, BC: City buys some of Cottonwood mouth land from CP and begins creating an airfield. |
| 1944 | | Great Northern completes acquisition of the Nelson and Fort Sheppard Railway. |
| 1944 | | Kimberley, B.C.: MacDougall Hospital expanded with a clinic. |
| 1944 | | International Joint Commission established by Canada and the U.S. to address Columbia River concerns. |
| 1944 | | Coleman, AB: The Town buys its water and power utilities from International Coal & Coke. |
| 1944 | | West Canadian Collieries begins developing its Adanac mine on its Byron Creek property near Hillcrest, AB. Begins production ion 1945. |
| 1944 | Mar. 29 | Kimberley, BC, incorporated as a City. |
| 1944 | Apr. 29 | Princeton, BC: The Princeton Tulameen Coal Company quits mining. |
| 1944 | June | Passburg, AB: The “big school” closes. |
| 1944 | June 15 | SK election: T.C. Douglas leads CCF to power. |
| 1944 | August | Brilliant, BC: First two generators come on line at Consolidated Mining and Smelting’s dam. Operated by West Kootenay Power. |
| 1944 | Aug. 8 | AB election: E.C. Manning and Social Credit re-elected in Alberta. |
| 1944 | Autumn | AB political: Province demands Lethbridge close its quasi-legal brothels. |
| 1944 | Oct. 26 | Macleod, AB: British Commonwealth Air Training Program shuts down its base. |
| 1944 | Dec. 1 | Lethbridge, AB: No. 8 Bombing and Gunnery School disbanded. |
| 1944 | Dec. 29 | Osoyoos, BC: Kettle Valley Railway branch opened from Oliver. |
| 1945 | | Grand Forks, BC: Norris Lumber and Box Company changes hands: renamed Grand Forks Saw Mill Limited. |
| 1945 | | Fernie, BC: City regains its independence from provincial supervision. |
| 1945 | | Cranbrook, BC: CP completes the reconstruction of the station. |
| 1945 | | Fritz Sick dies. |
| 1945 | | Lethbridge, AB: Wm. H. Fairfield retires from the superintendency of the Dominion Experimental Station and farm. |
| 1945 | | Lethbridge, AB: Maria Elizabeth Van Haarlem dies. |
| 1945 | | Galloway, BC: Hellen Norris, aka “Ma Henderson, ” dies. |
| 1945 | | Bellevue, AB: West Canadian Collieries sells Bellevue Inn into private hands. |
| 1945 | | Frank, AB: Bill Kerr buys sole ownership of the Turtle Mountain Playground. |
| 1945 | Mar. 1 | Galloway, BC: Mike and Maria Dumont sell sawmill to Jostad and Nelson who formed Galloway Lumber Company, Limited. |
| 1945 | Mar. 2 | Victoria, BC: Emily Carr dead. |
| 1945 | April | British Columbia Public Utilities Commission created to begin constructing a unified provincial power grid. |
| 1945 | Apr. 23 | Coalhurst, AB: Declared a “hamlet.” |
| 1945 | May 8 | Victory Europe Day. |
| 1945 | May 8 | Bull River, B.C.: Post office closed. |
| 1945 | June 11 | Election, federal: Mackenzie’s Liberals returned to power. |
| 1945 | Aug. 8 | Hope, BC: First report of fire—the “Big Burn”—up in the Sumallo Valley |
| 1945 | Aug. 15 | Victory Japan Day. |
| 1945 | Aug. 31 | After destroying 5,920 acres of fir, pine, spruce, cedar and balsam, the “Big Burn” is extinguished. |
| 1945 | Oct. 21 | B.C. political: John Hart leads Liberal/Progressive Conservative Coalition to re-election. |
| 1945 | Nov. 19 | Trail, BC: Selwyn Gwillym Blaylock dies. |
| 1945 | Dec. 13 | Andrew McCulloch dead; buried in Penticton. |
| 1945 | Dec. 31 | Oliver, BC: Incorporated as a Village. |
| 1946 | | Fairview Consolidated Mining and Smelting Company of Canada, Limited, takes over likeliest properties at Fairview, BC. |
| 1946 | | B.C.: Labour strike in the East Kootenay woods. |
| 1946 | | Salmo, BC: Consolidated Mining and Smelting returns attention to HB property nearby. |
| 1946 | | The CNP Coal’s Morrissey, Fernie and Michel Railway retires its a pair of 1913 2-8-0 Baldwins in favour of a 600-hp Baldwin DS4-4-600 diesel electric. First of the genre to work in B.C. |
| 1946 | | Grand Forks, BC: New airfield opened. |
| 1946 | | AB: Province introduced the 40-hour work week. |
| 1946 | | AB: Expansion of the St. Mary’s Irrigation District was begun. |
| 1946 | | “Royal City,” AB: The Lethbridge Social Credit Co-operative Mines Association officially closes the Lethbridge Gem mine. Likely not worked since 1942. |
| 1946 | | Blairmore, AB: West Canadian Collieries’ Greenhill mine hits record production of 759,000 tons. |
| 1946 | | AB: Coal mines in the province produced a record 8.8 million tons. |
| 1946 | | Sentinel, AB: East Kootenay Power refurbishes its coal-fired generating station. |
| 1946 | | Castlegar, BC: City of Nelson buys the Trans-Canada Airway field nearby. |
| 1946 | Jan. 14 | Osoyoos, BC: Incorporates as a Village. |
| 1946 | Jan. 23 | Sentinel, AB: An RCAF Dakota slams into Mt. Ptolemy nearby. Seven dead. |
| 1946 | Feb. 28 | V.J. Creeden of Hedley Mascot Mines Limited presented an obituary for Duncan Woods, erstwhile owner of the Mascot Fraction at Hedley, BC. |
| 1946 | May 14 | Federal political: Citizenship Act receives royal assent. |
| 1946 | July 3 | Hedley, BC: Strike at Kelowna Exploration Company’s Nickel Plate operation begins. Last till December 11. |
| 1946 | Aug. 6 | Kinnaird, BC: Incorporated as a village. |
| 1946 | Aug. 29 | BC political: Colonel the Honourable C.A. Banks commissioned as the lieutenant-governor. |
| 1946 | August | Hillcrest-Mohawk Collieries, Limited, takes over Tent Mountain stripping operation from the Fred Mannix & Co. |
| 1946 | Sep. 25 | Hillcrest-Mohawk Collieries, Limited, ended its working season on Coal Mountain. |
| 1946 | Sep. 26 | H.A. McKowan dies. |
| 1946 | Oct. 30 | Castlegar, BC: Incorporated as a Village. |
| 1946 | Oct. 30 | Salmo, BC: Incorporated as a Village. |
| 1946 | Dec. 22 | Lethbridge, AB: Internment Camp No. 133 closed. |
| 1946 | Dec. 31 | Slocan Lake, BC: CPR class M4g 3512 (2-8-0 Consolidation) and several cars falls off barge. |
| 1947 | | B.C. Provincial Commission of Inquiry in the activities of the Doukhobors, particularly the Sons of Freedom sect. |
| 1947 | | Sparwood, BC: Building lots first offered for purchase. |
| 1947 | | Christina Lake, BC: Lagoon Pavilion burns. |
| 1947 | | Lethbridge, AB: Runways at Kenyon Field lengthened. |
| 1947 | | Galloway, BC: Post Office closes its local bureau in Galloway Lumber offices and moves it across The Highway to the Midway Confectionary. |
| 1947 | | Sentinel, AB: the Huffman family begin building Glacier Cabins nearby on Crowsnest Lake. Now the Kozy Knest Kabins. |
| 1947 | | The M.V. Anscomb relieves the Nasookin on the East Shore-Balfour crossing of Kootenay Lake. |
| 1947 | | Creston, BC: Canyon Street widened to accommodate the Crowsnest Highway. |
| 1947 | | B.C.: Up-grading of Kootenay Lake’s east shore road begins. |
| 1947 | | Galloway, BC: School closed. |
| 1947 | | Coleman, AB: International C&C begins stripping coal from its York Creek property. |
| 1947 | | B.C.: Canadian Pacific Airlines begins service between Vancouver and points in southern Interior. |
| 1947 | | Cranbrook, BC: Scheduled air service begins. |
| 1947 | | Federal political: The last of the ethnic Japanese finally released from detention. |
| 1947 | | B.C.: L.A. Campbell, president of West Kootenay Power, dies. |
| 1947 | | Consolidated Mining and Smelting buys West Kootenay Power’s durable assets except the Lower Bonnington dam and generating station. West Kootenay Power contracted to run Consolidated Mining and Smelting’s plants. |
| 1947 | Jan. 1 | Canadian Citizenship Act proclaimed (See 1946/06/27). Citizens Canadian first, British subjects second. |
| 1947 | Feb. 5 | Michel, BC: Crow’s Nest Pass Coal opens the Erickson strip mine nearby. |
| 1947 | Feb. 13 | Thursday. |
| 1947 | Feb. 13 | Leduc, AB: 1610 hours, in Mike Turta’s barley field nearby, Imperial Oil’s Leduc No. 1 well “blows in.” |
| 1947 | Mar. 21 | Brookmere, BC: KVR three-stall enginehouse destroyed when boiler of #907 exploded. Enginehouse rebuilt as a four-stall structure. |
| 1947 | Apr. 22 | Canadian Gulf Oil Company begins drilling Pincher Creek No. 1 in s-w Alberta. |
| 1947 | May 7 | Leduc, AB: less than 2 miles away from Imperial Leduc No. 1, Leduc No. 2, under the direction of Aubrey Kerr, strikes oil. |
| 1947 | May 14 | Federal political: Federal Chinese Immigration Act(s) repealed. |
| 1947 | May 27 | Nelson, BC: First plane lands on lakefront airfield. |
| 1947 | June 2 | For the record: International Coal and Coke Company of Coleman has 531 shareholders subscribing to 3 million of 3 million $1.00 shares. |
| 1947 | June 2 | For the record: McGillivray Creek Coal and Coke of Coleman, Alberta, has 481 shareholders subscribing to 2,683,000 of 3 million $1.00 shares. |
| 1947 | June 12 | Salmo, BC: Having paid nearly $1,000,000 for the Emerald property earlier in the year, Placer Development Limited’s wholly-owned Canadian Exploration Company (Canex) subsidiary began milling operations. |
| 1947 | Sep. 8 | Lethbridge, AB: Last of the civic tram lines, the Blue Line, decommissioned and removal begins. |
| 1947 | Nov. 7 | Atkinson Dredging Company, Limited, of Vancouver begins operations few miles above Princeton. Quit on November 8th, 1949. |
| 1947 | Dec. 28 | Canadian Gulf Oil’s afore-noted Pincher Creek No. 1 blows in. |
| 1947 | Dec. 29 | B.C. political: John Hart resigns as premier. Replaced by Byron Ingemar Johnson as coalition premier. |
| 1948 | | Highway No. 3 complete between Okanagan Falls, BC, and Princeton, BC. |
| 1948 | | B.C.: Villages of Castlegar and Kinnaird buy from the City of Nelson part ownership of Ralph West Airfield near Brilliant, BC. |
| 1948 | | Boswell, BC: School closes. Students to Crawford Bay. |
| 1948 | | Sanca, BC: Lots at “New Sanca” up for sale. |
| 1948 | | Galloway, BC: Galloway Lumber operations electrified by East Kooteany Power. |
| 1948 | | B.C.: Nasookin scrapped. |
| 1948 | | Lethbridge, AB: CP places “skunks”—gas/electric self-propelled cars—on the runs south to Coutts, Sterling, Cardston. |
| 1948 | | Lethbridge, AB: Instrument landing aids installed at Kenyon Field. |
| 1948 | | Cardston, AB: Kainai high school students permitted to attend Cardston High to get their grades 11 and 12. |
| 1948 | | Coleman, AB: International C&C begins a 2-year program of capital investment in its works. |
| 1948 | Feb. 16 | Fire devastates downtown Coleman, AB. |
| 1948 | Spring | B.C.: Great floods. |
| 1948 | May | AB: Floods inundate upper Crowsnest River valley. |
| 1948 | May 10 | Penticton, BC: Incorporated as a City. |
| 1948 | May 24 | Fernie, BC: High water on the Elk River flooded town. |
| 1948 | May 24 | Kimberley, BC: High water on Mark Creek flooded town. |
| 1948 | June 1 | Creston Flats, BC: Kootenay River breaches the dikes. |
| 1948 | July 1 | Osoyoos, BC: First Cherry Festival. |
| 1948 | July 23 | A Friday. |
| 1948 | July 23 | Edmonton, AB: Donald Malcolm Wilson born in the Royal Alexandra. |
| 1948 | Aug. 17 | AB election: E.C. Manning and Social Credit re-elected in Alberta. |
| 1948 | Sep. 25 | Coal Mountain, AB: Hillcrest-Mohawk Collieries, Limited, suspends operations. |
| 1948 | Nov. 15 | Federal political: Louis St. Laurent succeeds as Liberal prime minister. |
