The Main Resurgence of the Rak Torrent, at the Foot of the Javornikì mountains after a Rain Shower; Rakov Škocjan, Postojna, Notranjska, Slovenija
12-August-2022: in the lower part of Rakov Škocjan (498m a.s.l., "Rio dei Gamberi" in Italian), a river valley carved into the limestone by the waters mainly coming from Cerkniško Jezero/Lake Cerknica, there are some very deep springs fed by other sources.
This one in the photo, still/stagnant but full of water, another sign that the underground strata are in relatively good condition, is over 10 meters deep and with the rains on the Javornikì area (1273m a.s.l.), where there is no surface water, such as on all the reliefs of the Region, they end up in underground fences, then in the aquifers, which, once full, push the excess water towards the surface, creating, in fact, these deep and mainly rounded pools.
From here the water that comes out, in a generally calm way, feeds the Rak stream, which flows a few meters behind this position.
This spring supplies, on average, 30/40% of the water of the entire course, which, as mentioned, is mainly fed by the waters that end up in the sinkholes of Lake Cerknica.
Cerkniško Jezero, as we know, is currently devoid of water, while its sinkholes have not received any since the beginning of January 2022, so the Rak was mainly fed (up to 90%) by this resurgence in the following months, until here too the waters stopped, but maintaining the level at the mouth.
In the event of a flood, this surface area can be submerged with many meters of water, reaching a depth of 15 meters!
In fact, during the most significant floods, the water reaches and submerges the road level of the lower part of this valley, rich in superficial and deep karst phenomena.
The road level, at the lowest points, is located about 12/13 meters above this spring.
The Main Resurgence of the Rak Torrent, at the Foot of the Javornikì mountains after a Rain Shower; Rakov Škocjan, Postojna, Notranjska, Slovenija
12-August-2022: in the lower part of Rakov Škocjan (498m a.s.l., "Rio dei Gamberi" in Italian), a river valley carved into the limestone by the waters mainly coming from Cerkniško Jezero/Lake Cerknica, there are some very deep springs fed by other sources.
This one in the photo, still/stagnant but full of water, another sign that the underground strata are in relatively good condition, is over 10 meters deep and with the rains on the Javornikì area (1273m a.s.l.), where there is no surface water, such as on all the reliefs of the Region, they end up in underground fences, then in the aquifers, which, once full, push the excess water towards the surface, creating, in fact, these deep and mainly rounded pools.
From here the water that comes out, in a generally calm way, feeds the Rak stream, which flows a few meters behind this position.
This spring supplies, on average, 30/40% of the water of the entire course, which, as mentioned, is mainly fed by the waters that end up in the sinkholes of Lake Cerknica.
Cerkniško Jezero, as we know, is currently devoid of water, while its sinkholes have not received any since the beginning of January 2022, so the Rak was mainly fed (up to 90%) by this resurgence in the following months, until here too the waters stopped, but maintaining the level at the mouth.
In the event of a flood, this surface area can be submerged with many meters of water, reaching a depth of 15 meters!
In fact, during the most significant floods, the water reaches and submerges the road level of the lower part of this valley, rich in superficial and deep karst phenomena.
The road level, at the lowest points, is located about 12/13 meters above this spring.