Visited Ambient Arkipelag 2021 in Tenhola over the weekend and heard Lau Nau & Minea perform in an old church.
Made a well planned build of the Trigger-to-Switch Project by Thomas Henry. This time the circuit is used to power a 12v water pump when the unit receives clock pulses. Works well (and way cleaner then my previous attempt)! Now I have an artificial artesian spring which follows my bpm in my disposal.
Spend a night at the Kurängen spring. Slept in a hammock. Or didn’t sleep rather, woke up at 5 to cycle home due to thunderstorm. Performed restoration work on site by removing a worn canvas from the spring base. The canvas had been set (in the 90ties I suspect) to keep the water clear but over the years naturally eroding top soil, decaying plants and other debris had rendered it useless. It was essentially blocking moss & other plants from establishing roots and preventing sunlight from accessing the bottom of the spring. The mud below the canvas smelled rotten (and was possibly a reason for the faint rotten smell of the water). I’m hoping that by planting peat and moss, which I’ll harvest from a swampy patch higher up the forest, I can establish a natural filter for the to the spring base. The filter is needed to keep the clay and mud settled. There is a lot of grey clay in the spring and I took some with me for experiments. I removed mud and all the debris I could catch during the night.
The spring was revealed over a meter deep. I suspect it has been the “eye of the swamp” which the long ditches in the little forest valley have been dug to dry out. Also found the car mentioned in Metsäauto ja lähde: miete maastoisesta suunnassa-olemisesta [Forestcar and spring: though on being on track in the ] (2015) Marko Leppänen. Dreaming of cutting a piece of the car panel for a spring water related electronics build. It feels prestigious somehow and disturbing it might be a bad idea.
The Broända spring seems to be destroyed. We visited the site (60.22312, 25.12607) yesterday and after a careful inspection of the surroundings it seems that the landscaping of the creek and the construction of the Vartiokylänlahti floodwalls have resulted into the destruction of the natural spring. I found a well in the proximity but it was dry. A survey Helsingin kaupungin ympäristökeskuksen julkaisuja 17/2013 (which Emmi found online) offers a thorough listing of all of the springs in Helsinki. According to this source the Broända spring (also know as “Viking Well”) was the best source for natural water in the city. The destruction of the spring is also confirmed on this blog and by browsing the history of the site on Helsinki ilmakuvina 1932–2014 service. Marko Leppänen has published a comment on a blog (summer, 2015), which details that a concrete rim of the spring well had been damaged by landscaping equipment.
We continued our expedition to the nearby Kurkimoisio spring, which according to the available photos seemed to be in the same condition as during the 17/2013 survey. As mentioned in the survey there were old wooded ground structures (dams?) in its proximity and I think more them were visible then before. The concrete ring placed around the spring opening was poorly covered and it had collected organic material. I tasted the water, it was drinkable but the water was discolored and had an odor. This spring would be great for a restoration project! We also strolled in the Kurkimoisionpuiston creek-spring area but no surface springs could be spotted. Apparently Helsinki area underground waters are not used as supplies for drinking water but there are facilities around the city tapped to the underground reserves, in case something goes wrong with the Päijänne Water Tunnel or the Silvola artificial lake (these are the water supplies for a million people). We spotted an odd facility named Broändan pohjavesilaitos near to the springs.