This short video, shot on August 8th & 9th 2006, shows the Bow River below the last major irrigation diversion at Bassano Dam. On August 9th, the river flow in this location was reduced to 9 m3/s. By contrast,the flow in Calgary (above all irrigation diversions) was 82 m3/s, and the average natural flow — the flow we would expect with no dams or diversions — for this time of year at Bassano Dam is 103 m3/s.
Irrigation withdrawals on the Bow River can have a devastating effect on healthy river flows.
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The mighty Bow River...reduced to a trickle
Media files for this video are available for download: