Spring Runoff Advisory for the Province of Alberta Is Still in Effect

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April 1, 2019

Attention Pipeline Integrity Division;

There is currently an Ice Advisory for the Town of Peace River and the Smokey River basin issued by Alberta Environment and Parks. The Spring Runoff Advisory for the province of Alberta is still in effect. The Peace River Ice Observation report has the ice front approximately 50 km upstream of the bridge at Dunvegan and 150 km upstream of the Town of Peace River on March 27th. Water levels and ice conditions on the Smoky and Peace Rivers can change quickly, and the ice may be unstable. Anyone taking part in activities near rivers should be aware of changing conditions. Below are the current Advisories and maps showing accumulated precipitation over the last week as well as the month of January.

If you require any depth of cover services or research into pipelines with potential problems, please let us know. Contact Jesse Toth (403-463-9113) or Derek Leiman (780-293-1810).

Ice Jam Advisory:

Smoky River basin – March 29 The Smoky River below the Little Smoky Rivers and the Little Smoky River for about 140 km upstream from the Smoky River broke up on Tuesday. The ice from these rivers formed an ice jam on the Smoky River between 18 and 30 km upstream of the confluence with the Peace River.

Town of Peace River – March 29 Currently the ice cover on the Peace River remains intact. Typically, the ice from the breakup of the Smoky and Little Smoky Rivers accumulates near the mouth of the Smoky River but in some years this ice can push into the Peace River.

Spring Runoff:

The Spring Runoff – March 29 This remains in place due to the runoff that continues as a result of the much above seasonal temperatures. Increase water levels have been observed in the smaller tributaries draining into the Milk, Oldman, Bow, Red Deer, North Saskatchewan and Paddle and Pembina Rivers.

For more information on real-time precipitation and river data go to: http://environment.alberta.ca/apps/basins/default.aspx

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Forecaster Comments

Weather River Flood

Issued at: 2019-03-29 3:45 PM

The Ice Advisory for the Town of Peace River and the Smoky River Basin remains in place.

During the evening of March 25, the ice broke up on the Little Smoky River near Guy. Gauge records indicate the ice on the Smoky River near Watino is currently breaking up.

Ice from the breakup of the Smoky and Little Smoky Rivers has jammed near the confluence of the Smoky River and the Peace River. The ice has remained stationary from Tuesday to today. If the ice pushes into the Peace River high water levels can result and ice jams can form through the Town of Peace River. Water levels and ice conditions on the Smoky and Peace Rivers can change quickly and the ice may be unstable.

A satellite image located the Peace River ice front at km 246 on March 27 (50 km upstream of the Dunvegan bridge and 150 km upstream of the Town of Peace River). The ice cover on the Peace River remains intact.

With the onset of warmer spring temperatures, ice breakup is occurring in Alberta's rivers. This may result in the formation of ice jams, but not always. The location and occurrence of ice jams, and possible associated flooding, are unpredictable. Local authorities are advised to monitor the ice covers and water levels in the rivers in their communities.

Update:

The Spring Runoff Advisory issued for the province remains in place. The melt is essentially complete south of Hwy 1 and east of the foothills. Locally, spring runoff is expected to continue north of Hwy 2 over the next week. However, with the seasonal to below seasonal temperatures forecast for the next week melt response is expected to slow down.

Increasing day time temperatures and resulting snow melt may rise water levels in small streams and rivers. The water level rise in the streams may cause minor flooding in low lying areas.

For more detailed information, please select 'Advisories' from the main menu.

Anyone taking part in activities near rivers should be aware of changing conditions. Melting ice covers are not very strong and travelling on them is not recommended. Residents should contact their local municipalities if they have concerns with river conditions.

Ice affects water courses, making streamflow measurements inaccurate. As a result, some streamflow stations are taken offline for the winter season but these will resume operations as spring progresses. For those stations online, only water level measurements will be reported until measurements are no longer affected by ice.

River conditions across the province will continue to be monitored and advisories will be issued as required.

Real-time precipitation and river data are available at: https://rivers.alberta.ca (../)

All flow data posted on the AEP website is provisional and preliminary.Environment Canada's Water Survey of Canada is the official owner of this information and as such it is part of their mandate to validate the flow values and publish the finalized maximum instantaneous peak discharge and daily discharge values for all locations in Canada on their website - http://www.ec.gc.ca/rhc-wsc/default.asp (http://www.ec.gc.ca/rhc-wsc/default.asp) . The validation of this data does not commence until the end of each calendar year.

Extreme caution should be taken when referring to the data posted to the AEP website - there is a disclaimer at the top of each data table outlining the need for caution.This is particularly true for large flow events when the gauge is affected by debris, damage, sediment in the river, re - alignment of the main river channel and over bank flow which cannot be measured.

Water Supply Outlooks are published incrementally as new data analyses are available. The most recent Water Supply Outlook is now available at: https://rivers.alberta.ca/?load=watersupply (../?load=watersupply)

Precipitation data and maps for the Water Supply Report are published monthly at: https://rivers.alberta.ca (../) To view Maps and Data Summaries there, select “Maps and Data Summaries” from the menu.

https://rivers.alberta.ca/# 1/1 4/1/2019 Alberta Environment and Parks - Alberta River Basins flood alerting, advisories, reporting and water management Alberta River Basins © 1995–2019 Government of Alberta 

Precipitation Maps

Day Week Month Events

Precipitation Maps

Day Week Month Events

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