www.exploreinc.ca 1-866-936-1805 April 27, 2020
Attention Pipeline Integrity Division;
This is an internal notification to update you of current high flow conditions issued by Alberta Environment and Parks. High flow can lead to waterway bank disruption, erosion, sloughing or scour. When this occurs over or around a pipeline water crossing the chance of a depth of cover failure or pipeline exposure increases. Pipeline leakages can lead to high cost property damage and high impact environmental damage. If you require any depth of cover services or research into pipelines with potential problems, please let us know. Contact Derek Leiman (780-293-1810) or Katie Welter (306- 834-4402).
Below is an update from Alberta Environment and Parks:
High Streamflow Advisory: Paddle River – downgraded from a Flood Watch The Paddle River Flood Watch has downgraded to a High Streamflow Advisory. Water levels are gradually falling along the Paddle River. Overland flooding in fields and against the Paddle River dykes may still be occurring.
Flood Watch: Little Paddle River – ended
Medicine River and Lasthill Creek – ended
Ice Jam Watch: East Prairie River near Enilda – still in effect The ice jam appears to have moved downstream. Water levels have receded upstream, but flooding continues to the north where it is believed the jam has re-formed.
Little Red Deer River – still in effect The ice jam by the Big Prairie bridge north of Water Valley remains in place. Sudden changes in water levels may occur if the ice jam shifts. As ice jams release new ones may form in other locations downstream.
Athatbasca River from Whitecourt to the Klondyke Ferry Crossing – still in effect Several ice jams remain in place from downstream of Whitecourt to Pride Valley but are expected to move out in the next couple days. River levels have receded.
Ice Jam Warning: Athabasca and Clearwater Rivers in Fort McMurray – still in effect The ice cover broke up in Fort McMurray on the morning of April 26th which formed an ice jam downstream. The ice jam raised water levels along the Athabasca and Clearwater Rivers between 4.5 and 6 m at Fort McMurray. Water and ice from the Athabasca River pushed up the Clearwater River and caused flooding and road closures in low-lying areas along the Athabasca River, the Snye and Clearwater Rivers. The Athabasca water levels are currently lower than the peak levels, however they continue to cause flooding. Snowmelt has slowed in the Clearwater River basin. Once the ice jam releases or melts, water levels are expected to fall. Behind every explore experience, is trust.
Head Office: Calgary Edmonton Office St. Paul Office Drayton Valley Office Box 62, Hanover Place 18941 - 111 Avenue NW Box 1987 -5133 50 Ave PO Box 6267 Suite #1200, 101 6th Ave SW Edmonton, Alberta St. Paul, AB 6521 50th Avenue West Calgary, Alberta T5S 2X4 T0A 3A0 Drayton Valley, AB T2P 3P4 780-455-5598 780-645-3399 T7A 1S1 www.exploreinc.ca 1-866-936-1805 Peace River from Sunny Valley to Fort Vermillion – still in effect Ice began moving on the Peace River near Atlas Landing (upstream of Fort Vermilion) on April 26th. The breaking front reached Fort Vermilion and is continuing to move downstream. Flooding has been reported in North Vermilion. Infrastructure including roads and a power line is impacted. There is flooding near the airport. No flooding has been reported on the South bank yet. As the ice jam releases and the ice cover continues to break up downstream, ice jamming and flooding are expected to occur. Potential impacted residents have been evacuated.
Spring Runoff Advisory: Central and North Central Plains Region – still in effect The melt may cause localized ponding of meltwater in low-lying areas where water does not have direct route to stream channels.
Mountain Runoff Forecasts (natural volumes for March to September 2020)
Milk River basin – below average to average
Oldman River basin – Average to above average
Bow River basin – Average to much above average
Red Deer River basin – Average to above average
North Saskatchewan River basin – Above average
Mountain Snowpack (snow accumulations measured in the mountains as of April 1, 2020) Oldman River basin - average at Westcastle II (102%), much above average at Lee Creek “Q” (165%) and Allison Pass (124%) (3 sites surveyed). Snow pillows (3 sites) are above average to much above average.
Bow River basin - much above average at Highwood Summit Bush (139%) (1 site surveyed). Snow pillows (6 sites) range from above average (Sunshine Village and three Isle Lake) to much above average.
Red Deer, North Saskatchewan, Athabasca River Basins: Red Deer basin - no locations surveyed North Saskatchewan River basin - above average at Nordegg (133%) to much above average at Brown Creek (218%) (2 sites surveyed). Snow pillows (2 sites) are much above average. Athabasca River basin - above average at Hinton (136%) (1 site surveyed).
For more information on real-time precipitation and river data go to: http://environment.alberta.ca/apps/basins/default.aspx
Behind every explore experience, is trust.
Head Office: Calgary Edmonton Office St. Paul Office Drayton Valley Office Box 62, Hanover Place 18941 - 111 Avenue NW Box 1987 -5133 50 Ave PO Box 6267 Suite #1200, 101 6th Ave SW Edmonton, Alberta St. Paul, AB 6521 50th Avenue West Calgary, Alberta T5S 2X4 T0A 3A0 Drayton Valley, AB T2P 3P4 780-455-5598 780-645-3399 T7A 1S1 Slave River No Data River FORT CHIPEWYAN Hay
Peace River HIGH LEVEL
River Chinchaga River
Wabasca River River Clearwater R.
FORT McMURRAY Peace PEACE RIVER River GRANDE Athabasca PRAIRIE
SLAVE Little Smoky R. LAKE COLD LAKE Smoky River
WHITECOURT River Athabasca
Pembina R. EDMONTON EDSON Saskatchewan LLOYDMINSTER JASPER River Battle
RED North DEER ROCKY MOUNTAIN HOUSE CORONATION Red Deer Plains Spring Runoff Outlook River as of April 1, 2020 BANFF Bow See CALGARY Mountain River Legend Water Supply BROOKS Forecasts Well Below Normal (<50%) Oldman River MEDICINE Below Normal (50% - 85%) HAT Normal (85% - 115%) LETHBRIDGE
Above Normal (115% - 150%) PINCHER Milk River CREEK Well Above Normal (150% - 200%) Extremely Above Normal (>200%)
Runoff complete for season Slave River
River FORT CHIPEWYAN Hay 07KF802 07MD801 07OA801 No Data Peace River HIGH 07JF801 07DD801 LEVEL 07HF801 No Data
07HF802 River Chinchaga River
Wabasca River River 07HC801 Clearwater R.
07FD801 FORT McMURRAY Peace AA 07FD802 PEACE RIVER 07FD803 River 07GJ801 07GE803 Athabasca 07GD801 AA-MAA07BF801 07GE802 07GH801 07BJ805 SLAVE GRANDE 07BK801 Little Smoky R. LAKE PRAIRIE 07GF807 07GG801 07BC803 07CA801 COLD ATHABASCA LAKE Smoky AA-MAA 07CA802 06AC801 WHITECOURT River 07BC802 MAA 07BB808 05EC802 05EC801 07AG803 07BB814 05ED802 07BC801 River Athabasca 07BB809 07BB811 07BB803 05EA802 Pembina R. 05EB802 07AD801 07AG802 05EE801 05EA803 05ED801 AA-MAA EDMONTON LLOYDMINSTER EDSON 05EE802 07BA802 Saskatchewan 05DF801 05FA803 05FE801 05DD801 AA-MAARiver 05CC803 05FA801 Battle
05CD803 AA-MAA RED 05FB801 05FD802 05DC802 North 05CC801DEER ROCKY 05FD801 05CC802 05CE801 05FC801 MOUNTAIN CORONATION 05CA803 05CE802 HOUSE Red Deer AA-MAA PlainsPlains Spring Snow RunoffCourse Outlook Results 05CB801 River asas of of March April 1, 20032020 See Bow Mountain CALGARY Snow Course Legend River Results 05AA801 = Snow course location MEDICINE HAT MAA = Much-above-average River Oldman CYPRESS AA = Above-average 05AH806 05AH804 HILLS 05AH802 05AH808 LETHBRIDGE 05AH803 A = Average 05AH807 Milk River BA = Below-average MAA
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