Fluorescein Dumped Into Goldstream River, British Columbia, Canada

The Goldstream River is a river on southern Vancouver Island, British Columbia, Canada. The river's name derives from a small gold rush in its basin during the 1860s, and was originally Gold Stream.
Course
The Goldstream River begins at the outlet of Butchart Lake, the first of three reservoirs along the upper reaches of the Goldstream which are within the Greater Victoria Watershed Area. Shortly after exiting Butchart Lake it flows into Lubbe Lake. Shortly after exiting Lubbe Lake the river enters the final and largest of the three lakes, Goldstream Lake. After exiting Goldstream Lake, the river flows southeast until it turns north and enters Goldstream Provincial Park. Just before entering the park, the river receives its first major tributary, Waugh Creek. About halfway through the park, the river tumbles over Goldstream Falls. After the falls it continues north, receiving the its final major tributary, Niagara Creek just before finally entering the Finlayson Arm while still inside the park.