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Watershed/ River Valley

Check out the Southern Alberta Water Charter (SAWC) 2017!​ The City of Lethbridge has signed the Charter - see what actions we will be taking and how you can participate!​

​What is  a Watershed/Basin?​

Wherever you live, you live in a watershed. A watershed is the area of land that carries water from the land after rain falls and snow melts through the soil, groundwater, creeks and streams making its way into larger rivers and eventually the ocean.

What Watershed Do We Live In? 



The Oldman River Watershed is located in the southwest corner of Southern Alberta. There is one city, Lethbridge, located within the watershed and several towns and hamlets that are home to approximately 200,000 people.

Each watershed is sub-divided into smaller sections. Below is a map which illustrates the four sub-basins that exist within the Oldman Watershed.

Oldman River Basin Sub-Basins map property of Oldman Watershed Council


 Fun Fact: Our water eventually drains into the Hudson Bay!
Canada's Watershed-Oldman Boundary - basemap provided by Environment Canada

Looking for more information?

Click on the links below to find out more about our watershed and how you can help!

"As residents of the Oldman River Basin Watershed, we are responsible for the health of our watershed and the quality of our water." OWC