Suspecting water would begin to flow on 18 December, Senior Constable Hansson drove to the riverbank and started filming when the water began to cut through the dust.
"Come on down … Come to papa!" he can be heard yelling in the video.
"Here she comes... wow, I can't believe how lucky I am!"
His enthusiastic and very Australian response to the river's return to life would perhaps have gone unnoticed were it not for his daughter, Tahnee, who uploaded the video to YouTube on 19 December.
This week the internet noticed it, and turned Snr Con Hansson into an overnight sensation.
He said he was so excited on the video because he had not seen the river flow since moving to the area four years earlier.
"I patrol the area anyway so I just pulled up for a minute to see if the river would start. I just couldn't believe it," he said.
'It's going viral, dad'
Living in a remote area which relies on satellite internet, Snr Con Hansson remains unaware of the extent of the video's popularity.
"My daughter's been keeping me appraised of the situation. She said she had uploaded the video to YouTube and I said, 'So what?'.
"But I'm excited people get to know about north-west Queensland and how tough it is out here, and how tough the people are.
"They've done well to keep their heads up it's good to see a smile on a few faces and cattle with their heads down having a good feed."
Tahnee Hanson said her father's performance in the video reminded her of an American man's infamous reaction to a double rainbow, which went viral in 2010.
"I put it on my YouTube and it wasn't really doing anything, then I woke up this morning and overnight it went from 500 views to 40,000.
"I said, 'It's going viral dad', and he kind of didn't give a rat's ass," she said.