Breaking the Flow

Overview

We studied how effective dry dams were at reducing water velocity in a watershed district that has elevated landforms with tributaries leading towards Manitoba's 10th largest lake (Dauphin Lake) by using the 'Float Method'. This is challenging because steep slopes create a higher stream gradient that also has a positive correlation with velocity. We have found that the increase in sediment, longer sand bars, and occasional unhealthy appearances of the walleye in the lake can also be attributed to the high slopes from Riding Mountain and Duck Mountain that both have streams and rivers leading into Dauphin Lake. Measuring the effectiveness of dry dams is important because it provides statistical information to land owners, municipalities and other watershed districts to help promote the use of dry dams for maintaining and conserving a lake or body of water to which it drains into.

Awards (1)

• Selected for CWSF 2026

Competition history

• CWSF 2026 Environment & Climate Change

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