BC Hydro keeping close eye on coming storms

Sub-tropical storms may hit the Comox Valley harder than anticipated.

  • Dec. 8, 2014 11:00 a.m.

Since last week, BC Hydro has been tracking the two sub-tropical storms forecasted to hit the region this week. Unfortunatel,y the storms are now much stronger and may hit the Comox watershed hard. BC Hydro’s weather forecasting and hydrology modelling, as of today, has seen a large increase in rainfall and forecasted inflows.

The Monday-Tuesday storm is the strongest. Precipitation will peak tonight at a rate of about 10 mm per hour.

With the high ocean tides taking place in the morning each day this week, there is a risk of flooding in isolated areas of Courtenay on Tuesday and potentially each morning thereafter through Thursday. BC Hydro is concerned about these storms and the potential for flooding.

BC Hydro is forecasting daily water inflow averages into the reservoir to be 350 m3/s and 320 m3/s on Tuesday and Wednesday. That means hourly peaks may hit 600-700 m3/s. It also means the uncontrolled Tsolum and Browns river flows will be high. Flooding along the river can begin at around 400 m3/s but is dependent on tide and storm surge from wind. There are winds from these storms that will cause some surge up the estuary.

Since the weekend, BC Hydro is spilling water at maximum rates and that continues through today to lower the reservoir level. The reservoir has come down about half a metre the past two days. It is currently at 133.3 metres, and provides BC Hydro with about 2 metres of storage room to try to take in these forecasted water inflows. However, that storage may be taken up fast in the next few days, and with it, BC Hydro’s flexibility to back off during high ocean tides

BC Hydro will operate the Comox dam by releasing high flows at low tide and low flows at high tide. The flow discharge from the dam may be from 30 m3/s at high tide to 200 m3/s or more at low tide. The public is advised to stay away from the Puntledge River through the week.

-BC Hydro

Get local stories you won't find anywhere else right to your inbox.
Sign up here

Just Posted

Box containing hundreds of family photos found in Courtenay returned to rightful owner

Local media sources collaborate to solve family photos mystery

Two Comox Valley groups share annual Project Watershed award

Keep It Living Award given to Morrison Creek Streamkeepers and Comox Valley Land Trust

ATV crash at bottom of Mount Washington sends two to hospital

Two people were hospitalized following an ATV (all terrain vehicle) accident shortly… Continue reading

Game on! Outdoor pickleball season starts up in the Comox Valley

Comox Valley Pickleball Association members Evie MacDonald and Donny Cruickshank (near court)… Continue reading

Island Health signs working agreement to turn former Comox hospital into a ‘dementia village’

Island Health has signed a project development agreement with Providence Living to… Continue reading

B.C. records no new COVID-19 deaths for the first time in weeks

Good news comes despite 11 new test-positive cases in B.C. in the past 24 hours

Comox Valley business map offers information on local eateries, grocery stores and more

Search and click for hours and services offered during the COVID-19 pandemic

Facing changes together: Your community, your journalists

The COVID-19 pandemic has changed the world in ways that would have… Continue reading

RCMP told of alleged assault in Courtenay hours after the fact

Police only made aware of possible attack through social media posts

Tahsis opens its gates to visitors to save local economy

Seasonal local businesses that rely on tourism hope to survive despite drop in tourist numbers

BC Corrections to expand list of eligible offenders for early release during pandemic

Non-violent offenders are being considered for early release through risk assessment process

Comox Valley United appeals to district to support field house proposal

The Comox Valley United Soccer Club is looking for an approximate $150,000… Continue reading

Habitat for Humanity VIN wins national award for innovative approach to building

Courtenay and Campbell River builds represent 400 per cent growth in historical annual average

Most Read