HISTORICAL NEWS SEARCH - Government of British Columbia
HISTORICAL NEWS SEARCH - Government of British Columbia HISTORICAL NEWS SEARCH - Government of British Columbia
and Highway 29 South to Tumbler Ridge. The road closures affected hundreds of southbound vehicles. A number of stranded motorists were evacuated by helicopter from isolated areas. On the morning of August 1, just before the lakeside road washed out, the Moberly Lake provincial campground at was evacuated. When flooding rivers caused Moberly Lake to rise rapidly, 50 people were evacuated from Camp Sagatawa and five camping units. Waves up to 3 ft. (90 cm) high were forced over its shore. Five people were evacuated by boat from the south side of the lake. Camp Sagatawa was inundated by a 3-ft. (90 cm) stream, which became 30 ft. (9 m) wide. Near Camp Sagatawa, Highway 97 was threatened. Near Sagatawa, an 8-ft. (2.4 m) culvert at Medicine Woman Creek became plugged. Near Moberly, Le Bleu Creek washed out the approach to the bridge by Ken’s Place. The gravel road between Highway 29 and the park washed out in four places, including the Martin Creek bridge, and was not expected to be repaired within two or three weeks. After both approaches to the Martin Creek bridge washed out, about 20 Sukunka River campers were cut off from Highway 29. On August 2, 19 people were evacuated by helicopter: 14 campers staying at the Sukunka Falls Provincial Park and five hikers at Kinuseo Falls. A local resident rescued a two-year old child from a camper hung up on the edge of a collapsed bridge. -------------------------- *1) According to Mayor Charlie Lasser, an increase in the number of settling ponds along the creek which passes through Chetwynd would remedy the problem of accumulated gravel during the flood (Chetwynd Echo, August 11, 1987). *2) The provincial government approved $6 million in assistance for victims of the July flooding in Chetwynd, Dawson Creek, Fort St. John, Fort Nelson and Tumbler Ridge. The money was to compensate residents and businesses and cover repair to roads, bridges and creeks (The Vancouver Sun, September 14, 1987). On September 10, 1988, Order in Council 1797 was approved in response to the extensive damage that occurred in the northeast of British Columbia, ordered relief to an amount not to exceed $6 million under the Flood Relief Act. September 17-21, 1987 Event type: Rain-on-snow flooding. Precipitation: Hartley Bay (294.6 mm/2 days), September 19-20, 1987; Kemano (165.0 mm/2 days), September 19-20, 1987; Kildala (195.7 mm/2 days), September 19-20, 1987; Langara (105.4 mm/3 days), September 17-19, 1987; Bella Coola (52.2 mm/1 day), September 19, 1987; Kitimat Townsite (201.1 mm/2 days), September 19-20, 1987; Kitimat 2 (225.8 mm/2 days), September 19-20, 1987; Prince Rupert M. Circ (170.2 mm/3 days), September 19-21, 1987; Prince Rupert (142.0 mm/3 days), September 19-21, 1987; Terrace (162.6 mm/3 days), September 19-21, 1987; Falls River (203.0 mm/3 days), September 19-21, 1987; Nass Camp (59.4 mm/1 day), September 20, 1987; Terrace (100.4 mm/1 day), September 20, 1987. Source: The Daily News, September 21, 1987; Northern Sentinel, September 24, 1987; Terrace Review, September 23, 1987; The Interior News, September 30, 1987; Environment Canada 1991; Brent Smith, pers. comm. Skeena Cellulose, Terrace. On September 20, Terrace recorded 100.4 mm of rain in 24 hours. The heavy rain caused snowmelt at higher elevations. Highway 16 between Prince Rupert-Terrace had water pooling along the railroad track for a distance of 8 km. Highway 16 between Terrace-Hazelton was closed by a washout at Whiskey Creek, 14 km west of the Kitwanga junction. The site of the washout had 3 ft. (90 cm) of water on the road. Heavy rains caused gravel and debris to plug the culvert. The creek bed rose 16-20 ft. (4.8-6 m) when thousands of yards of debris were deposited, forcing the highway to flood. Some $50,000 was spent to clear the culvert. The highway reopened late on September 21. Minor problems were also reported from other locations. Flooding at Williams Creek closed highway 37 between Terrace-Kitimat. *1) The traffic was rerouted via the old Lakelse Road. The rail line between Terrace-Kitimat was out of service for three to four weeks. On September 21, the Kitimat River below Hirsch Creek recorded a maximum instantaneous discharge of 2,170 m 3 /s and a maximum daily discharge of 1,530 m 3 /s (Environment Canada 1991). The Kitimat River changed its course and damaged the foundations of the Kitimat River bridge. Skeena Cellulose reported about $60,000 damage to its logging roads. Major washouts occurred between Kilometres 45-47 on the road between the Clore-Kitnayakwa. Replacement of culverts on the Kleanza road cost some $20,000 (B. Smith, pers. comm.). The PNG pipeline between Kitimat/Terrace-Prince Rupert was cut by severe erosion in the Copper River Valley. -------------------------------- *1) The highway between Terrace-Kitimat was originally known as Highway 25. It was later renumbered Highway 37 to link Kitimat up with the existing Highway 37 between Kitwanga and the Yukon border. Thus, Kitimat was made the southern point of this north-south highway link. July 1988 Event type: Debris slides. Precipitation: Not available. Source: Coates 1992 (p. 257); Evans and Clague 1989; Trenhaile1998.. 154
In July, heavy rainfall caused widespread landsliding over a large area of the northern Cordillera. The heavy rainfall resulted in numerous debris flows and related sediment-water flow processes that severed the Alaska Highway in three areas: Muncho Lake, B.C., Rancheria and Kluane, Y.T. The events paralysed travel in the region for several days (Evans and Clague 1989; Trenhaile1998). A major portion of the highway along the west shore of Kluane Lake was buried under a mountain slide. It took many days to dig the muck off the road surface and to stabilise the hillside sufficiently to protect against further slides. Traffic again piled up at both ends of the blockage, although many escaped by driving around by way of Dawson City, the Top of the World Highway, and Richardson Highway in Alaska to Teslin Junction on the Alaska Highway (Coates 1992). In the vicinity of Muncho Lake, debris flows originating in the steep watersheds of the Sentinel Range of the Rocky Mountains severed the highway at six locations. At Kluane Lake, debris flows and debris avalanches severed the highway in numerous places. At one location, near the Slims River, a debris flow covered over 500 m of highway. The direct cost of restoring the Alaska Highway was in the order of $1.8 Million in 1988 dollars (Evans and Clague 1989). *1) -------------------------------- *1) These events point out the vulnerability of transportation facilities in mountainous terrain where the location of routes necessarily involves the traversing of active geomorphic surfaces. August 1, 1988 Event type: Glacial outburst flood. Precipitation: Not applicable. Source: Eero Karanka, pers. comm. February 21, 1994. Habitat Biologist, Department of Fisheries and Oceans, Prince Rupert. On August 1, the lower lake on the Tulsequah Glacier drained (Karanka, pers. comm.). *1) --------------------------------- *1) There are two lakes on Tulsequah Glacier that drain by jökulhlaup; the one described by Marcus (1960) and another lake further up the glacier. The latter should not be confused with Upper Lake Tulsequah described by Marcus (1960) (Karanka, pers. comm.). September 16, 1988 Event type: Glacial outburst flood. Precipitation: Not applicable. Source: Eero Karanka, pers. comm. February 21, 1994. Habitat Biologist, Department of Fisheries and Oceans, Prince Rupert. On September 16, the upper lake of the Tulsequah Glacier drained (Karanka, pers. comm.). *1) ------------------------------- *1) Based on WSC data, other drainings may have occurred on August 17, 1989, July 19 and August 20, 1990. The drainings are detectable in the WSC data only since 1988, when the gauging station was moved from upstream to downstream of the Tulsequah River junction (Karanka, pers. comm.). September 26-29, 1988 Event type: Flooding. Precipitation: Hartley Bay (357.2 mm/3 days), September 26-28, 1988; Prince Rupert (75.0 mm/1 day), September 27, 1988; Pallant Creek (234.6 mm/2 days), September 27-28, 1988; Prince Rupert M. Circ (121.4 mm/2 days), September 27-28, 1988; Falls River (180.2 mm/2 days), September 27-28, 1988; Kemano (114.4 mm/2 days), September 27-28, 1988; Kildala (172.9 mm/2 days), September 27-28, 1988; Kitimat 2 (204.2 mm/2 days), September 27-28, 1988; Kitimat Townsite (180.5 mm/2 days), September 27-28, 1988; Bella Coola (149.8 mm/2 days), September 27-28, 1988; Sewell Inlet (222.2 mm/2 days), September 27-28, 1988; Sandspit A (36.6 mm/1 day), September 28, 1988; Nass Camp (62.4 mm/1 day), September 28, 1988; Terrace (106.6 mm/1 day), September 28, 1988; Smithers A (59.4 mm/2 days), September 28-29, 1988. Source: The Daily News, September 29, October 21, 1988; Northern Sentinel, September 29, 1988; The Coast Mountain Courier, October 5, November 30, 1988; The Terrace Standard, October 5 and 19, November 2, 1988; The Interior News, October 5, 1988; The Province, October 21, 1988; Environment Canada 1991; Initial Report by Ministry of Environment –Rivers Section File P88-6, Task 890895; Eurocan Pulp & Paper Co. Ltd., Annual Report 1988 T.F.L. 41, Kitimat; Brent Smith, pers. comm. Skeena Cellulose, Terrace; Memorandum, October 4, 1988, Archie MacDonald (Skeena Cellulose, Terrace) to Ted Wilson (B.C. Min. For., Terrace); Pacific Northern Gas, Terrace) Repair Costs for Copper River; Letter, October 31, 1988, Ted Wilson (Engineering Assistant B.C. Min. For., Terrace) to Dean Moneray (Manager, Coastal Sector Provincial Emergency Program) Vancouver. Damage Report for September 29-30, 1988. On August 29 following heavy rains, severe flooding occurred in a number of watersheds in northwestern British Columbia. A two-day storm hit Terrace and Kitimat, with winds gusting up to 100 km/h. Kitimat reported 5.5 in. (139.7 mm) of rain in 24 hours and Terrace reported 4 in. (101.6 mm) on September 28. The storm brought heavy 155
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and Highway 29 South to Tumbler Ridge. The road closures affected hundreds <strong>of</strong> southbound vehicles. A number <strong>of</strong><br />
stranded motorists were evacuated by helicopter from isolated areas.<br />
On the morning <strong>of</strong> August 1, just before the lakeside road washed out, the Moberly Lake provincial campground at<br />
was evacuated. When flooding rivers caused Moberly Lake to rise rapidly, 50 people were evacuated from Camp Sagatawa<br />
and five camping units. Waves up to 3 ft. (90 cm) high were forced over its shore. Five people were evacuated by boat from<br />
the south side <strong>of</strong> the lake. Camp Sagatawa was inundated by a 3-ft. (90 cm) stream, which became 30 ft. (9 m) wide. Near<br />
Camp Sagatawa, Highway 97 was threatened. Near Sagatawa, an 8-ft. (2.4 m) culvert at Medicine Woman Creek became<br />
plugged. Near Moberly, Le Bleu Creek washed out the approach to the bridge by Ken’s Place.<br />
The gravel road between Highway 29 and the park washed out in four places, including the Martin Creek<br />
bridge, and was not expected to be repaired within two or three weeks. After both approaches to the Martin Creek bridge<br />
washed out, about 20 Sukunka River campers were cut <strong>of</strong>f from Highway 29. On August 2, 19 people were evacuated by<br />
helicopter: 14 campers staying at the Sukunka Falls Provincial Park and five hikers at Kinuseo Falls. A local resident rescued<br />
a two-year old child from a camper hung up on the edge <strong>of</strong> a collapsed bridge.<br />
--------------------------<br />
*1) According to Mayor Charlie Lasser, an increase in the number <strong>of</strong> settling ponds along the creek which passes through<br />
Chetwynd would remedy the problem <strong>of</strong> accumulated gravel during the flood (Chetwynd Echo, August 11, 1987).<br />
*2) The provincial government approved $6 million in assistance for victims <strong>of</strong> the July flooding in Chetwynd, Dawson<br />
Creek, Fort St. John, Fort Nelson and Tumbler Ridge. The money was to compensate residents and businesses and cover<br />
repair to roads, bridges and creeks (The Vancouver Sun, September 14, 1987). On September 10, 1988, Order in Council<br />
1797 was approved in response to the extensive damage that occurred in the northeast <strong>of</strong> <strong>British</strong> <strong>Columbia</strong>, ordered<br />
relief to an amount not to exceed $6 million under the Flood Relief Act.<br />
September 17-21, 1987<br />
Event type: Rain-on-snow flooding.<br />
Precipitation: Hartley Bay (294.6 mm/2 days), September 19-20, 1987; Kemano (165.0 mm/2 days), September 19-20,<br />
1987; Kildala (195.7 mm/2 days), September 19-20, 1987; Langara (105.4 mm/3 days), September 17-19, 1987; Bella<br />
Coola (52.2 mm/1 day), September 19, 1987; Kitimat Townsite (201.1 mm/2 days), September 19-20, 1987; Kitimat 2<br />
(225.8 mm/2 days), September 19-20, 1987; Prince Rupert M. Circ (170.2 mm/3 days), September 19-21, 1987; Prince<br />
Rupert (142.0 mm/3 days), September 19-21, 1987; Terrace (162.6 mm/3 days), September 19-21, 1987; Falls River<br />
(203.0 mm/3 days), September 19-21, 1987; Nass Camp (59.4 mm/1 day), September 20, 1987; Terrace (100.4 mm/1<br />
day), September 20, 1987.<br />
Source: The Daily News, September 21, 1987; Northern Sentinel, September 24, 1987; Terrace Review, September 23,<br />
1987; The Interior News, September 30, 1987; Environment Canada 1991; Brent Smith, pers. comm. Skeena Cellulose,<br />
Terrace.<br />
On September 20, Terrace recorded 100.4 mm <strong>of</strong> rain in 24 hours. The heavy rain caused snowmelt at<br />
higher elevations. Highway 16 between Prince Rupert-Terrace had water pooling along the railroad track for a<br />
distance <strong>of</strong> 8 km. Highway 16 between Terrace-Hazelton was closed by a washout at Whiskey Creek, 14 km west <strong>of</strong><br />
the Kitwanga junction. The site <strong>of</strong> the washout had 3 ft. (90 cm) <strong>of</strong> water on the road. Heavy rains caused gravel and<br />
debris to plug the culvert. The creek bed rose 16-20 ft. (4.8-6 m) when thousands <strong>of</strong> yards <strong>of</strong> debris were deposited,<br />
forcing the highway to flood. Some $50,000 was spent to clear the culvert. The highway reopened late on September<br />
21. Minor problems were also reported from other locations. Flooding at Williams Creek closed highway 37 between<br />
Terrace-Kitimat. *1) The traffic was rerouted via the old Lakelse Road. The rail line between Terrace-Kitimat was out<br />
<strong>of</strong> service for three to four weeks.<br />
On September 21, the Kitimat River below Hirsch Creek recorded a maximum instantaneous discharge <strong>of</strong><br />
2,170 m 3 /s and a maximum daily discharge <strong>of</strong> 1,530 m 3 /s (Environment Canada 1991). The Kitimat River changed its<br />
course and damaged the foundations <strong>of</strong> the Kitimat River bridge.<br />
Skeena Cellulose reported about $60,000 damage to its logging roads. Major washouts occurred between<br />
Kilometres 45-47 on the road between the Clore-Kitnayakwa. Replacement <strong>of</strong> culverts on the Kleanza road cost some<br />
$20,000 (B. Smith, pers. comm.).<br />
The PNG pipeline between Kitimat/Terrace-Prince Rupert was cut by severe erosion in the Copper River<br />
Valley.<br />
--------------------------------<br />
*1) The highway between Terrace-Kitimat was originally known as Highway 25. It was later renumbered Highway 37<br />
to link Kitimat up with the existing Highway 37 between Kitwanga and the Yukon border. Thus, Kitimat was made<br />
the southern point <strong>of</strong> this north-south highway link.<br />
July 1988<br />
Event type: Debris slides.<br />
Precipitation: Not available.<br />
Source: Coates 1992 (p. 257); Evans and Clague 1989; Trenhaile1998..<br />
154