Several hikers caught sight of the phenomenon on Sandviksfjellet last week.
Photo: BT tips Published: Published:
Less than 40 minutes ago
BT has received several photos and videos of mysterious bubbling in Smådiket. The water is located along the hiking trail between Munkebotn and Storevatnet.
One tipster writes to BT that the tour group swam into the water to try to find out what it was, without success.
– The water felt icy cold. Can you figure out what this is? wrote the tipster.
Must keep the water level low
Rune Engesæter, responsible for water drainage in Bergen water, has the answer.
He explains that the bubbling has arisen in connection with the bottling of Lake Storevatnet. The dam has been drained, because the dam needs to be repaired.
– We are required by NVE to keep the water level below a certain level, says Engesæter.
They use two taps to keep the water level in Storevatnet down. One of the pipes has an outlet in the marshy area below the water.
The other, which is both longer and has a larger capacity, goes to Smådiket. It has been closed since last winter.
– We have avoided using the discharge pipe for Smådiket until now, in an attempt to limit the discharge of Lake Storevatnet.
Had to open two pipes
But when the extreme weather “Hans” ravaged Eastern Norway, there was also enough rainfall in Bergen that they had to draw more water from Lake Storevatnet. A week ago they therefore opened the pipe to Smådiket again.
For the last week, Smådiket has therefore had clean water, and this is what creates movement. The outlet of the pipe is under water, and is therefore not visible.
– Due to the difference in height, the water flowing out of the tap pipe in Smådiket will have a lot of speed. It’s like when you fill a child’s bathtub and put the shower head under water. Then there will be turbulence, says Engesæter.
He says that the outlet in Smådiket will continue to be open in the future, due to the rainfall in recent weeks.
Published:
Published: August 21, 2023 3:53 p.m
2023-08-21 13:53:48
#caused #walkers #react
