In the past
there were various tendencies to drain flooded or occasionally
flooded land. In 1921 the water company Vodna zadruga made
sinkholes (so-called ponors) shallower, regulated Stržen
and constructed drainage channels. The marshy land was drained
through partial regulations of streams Žirovniščica (2000
m), Lipsenjščica (1074 m), Tresenc (1146 m) and Goriški potok
(1143 m). Drainage channels were arranged at Lipsenj (758
m), and the Stržen was levelled with the channel at Ključi
All this helped ease major floods. Medium and high-level
waters started draining faster, the underground water level
was lowered and the biodiversity of wet meadows changed.
The goal of
the LIFE Nature project is to restore the former meanders
that are typical for watercourses in the area of the intermittent
Lake Cerknica. This will improve environmental conditions
for birds and other species. The project will after all contribute
also to raising the awareness of the local and general public
about the purpose of watercourse renaturation.
The company Inženiring za vode d.o.o. will prepare project
documentation based on the review of the situation in the
field and examination of the watercourses prior to regulation.
First, geodetic measurements will be made for a wider area
of watercourses, along with geological and hydrological research,
and habitat type mapping. Project documentation will include
approximately 14 km of watercourses. By the end of the project
we are going to renaturate two 500-metre sections of streams
Goriški Brežiček and Tresenec.