Monitoring water supply and managing demand

Together, we can make every drop count

Current conditions - Oct. 15, 2026

Calgary’s water supply is healthy for this time of year with water demand following normal seasonal trends, declining as temperatures cool.

Our system infrastructure is being closely monitored and readied in anticipation of the connection of new Bearspaw South Feeder Main this November.  More information on the factors influencing these conditions is provided below.

Our next update will be provided in November 2026.

What we're monitoring

We monitor a range of factors to help ensure a reliable water supply for our growing city, and to guide decisions about whether water restrictions are needed and, if so, at what level.

Supply

Water supply is normal for this time of year.

  • On-stream reservoir storage in the Bow and Elbow River watersheds is at a normal level for this time of year. The Glenmore Reservoir is being kept full in preparation for the upcoming Bearspaw South Feeder Main connection work, when it will need to supply a larger-than-normal share of The City's drinking water.
  • River flows are within the normal range for this time of year.
  • We are monitoring the developing El Nino conditions and emerging outlook for 2027. 

What influences the amount of water available in on-stream reservoirs?

The volume of water available in the Bow basin’s reservoirs is actively managed to balance flood and drought risk using measurements and forecasts of snowpack, rainfall, and water use.

Demand

Water use is within the typical seasonal range.

What factors influence water demand?

The amount of water people typically use is driven by temperatures, rainfall and the current level of dryness.

Infrastructure

Water system can meet current demand; The Bearspaw South Feeder Main is operating at a reduced capacity and continues to be closely monitored.

Beginning November 4, crews will undertake the final steps of construction on Calgary's new Bearspaw South Feeder Main by connecting it into the existing water system.

As a result, city-wide Stage 4 Outdoor Water Restrictions and indoor water conservation will be in effect starting November 4 for approximately four weeks.

For details visit calgary.ca/savewater.

Water schedule

Lawn and landscape watering schedule

This schedule sets regular days and times for watering your lawn with a sprinkler or automatic irrigation. This will help protect our water system during peak summer demand and to make sure there’s enough water for the things that matter most.

Know your three watering days

Top tips for saving water outdoors

Use a rain barrel

Rain barrels are a great way to capture and reuse rainwater in your yard.

Reduce how often and how long you water outdoors

You can achieve this by cutting your watering time by 5-10 minutes less per session.

Skip a watering day

Healthy lawns only need about one inch of water per week to stay healthy. This includes rain too, so use a small container to track how much water your lawn is getting.

Water during cooler hours

Water your lawn and garden in the late evening or early morning to reduce evaporation.

Keep your grass three inches long

Longer grass keeps roots cool helping your lawn handle dry conditions.

More ways to save water

In your yard

During spring and summer, your water use can jump by 30 to 40 per cent because of outdoor watering activities. Prepare your yard for dry conditions and make it as water efficient as possible.

Learn about drought-tolerant native plants Get a rain barrel

At home

In Calgary, the average person uses about seven cubic metres (m3) or 7,000 litres of water per month. 

Find out the biggest water users inside your home and get tips and actions to take to achieve significant water savings in your bathroom, kitchen and laundry area.

Saving water in your home

At work

Practicing water efficiency makes good business sense. It helps lower operating costs, saves energy and demonstrates responsible water use. 

There are many ways businesses can conserve water. Learn how to lower your water use with sector specific tips, guides and resources. 

Water efficiency for businesses Learn how to become a water managed site

More information