Kustošak is a stream passing through the neighbourhoods of Kustošija and

Trešnjevka Trešnjevka is a neighborhood of Zagreb, Croatia. Forming one of the city's inner neighborhoods, it is located in the city's southwestern area. At approximately 15.67 km2 in area and a population of slightly over 121,000, it is one of the most ...

Zagreb Zagreb ( ) is the capital (political), capital and List of cities and towns in Croatia#List of cities and towns, largest city of Croatia. It is in the Northern Croatia, north of the country, along the Sava river, at the southern slopes of the ...

Croatia Croatia, officially the Republic of Croatia, is a country in Central Europe, Central and Southeast Europe, on the coast of the Adriatic Sea. It borders Slovenia to the northwest, Hungary to the northeast, Serbia to the east, Bosnia and Herze ...

. It is located on the western part of

Medvednica Medvednica (, ) is a mountain in central Croatia, just north of Zagreb, and marking the southern border of the historic region of Zagorje. Most of it is encompassed by the Medvednica Nature Park. The highest peak, at is Sljeme. Most of the are ...

Mountain's southern slope. The stream's upper basin is not easily accessible due to suburban development, but public walkways have been built along its lower basin. Before the urbanisation of Trešnjevka, Kustošak used to flow directly into

Sava River The Sava, is a river in Central and Southeast Europe, a right-bank and the longest tributary of the Danube. From its source in Slovenia it flows through Croatia and along its border with Bosnia and Herzegovina, and finally reaches Serbia, fee ...

, but due to the river's

meander A meander is one of a series of regular sinuous curves in the Channel (geography), channel of a river or other watercourse. It is produced as a watercourse erosion, erodes the sediments of an outer, concave bank (cut bank, cut bank or river cl ...

ing only a sharp remains of the stream's former mouth. Further downstream, Kustošak discharges into the Vrapčak stream. Parts of the stream were covered in the course of the city's expansion, and several

retention basin A retention basin, sometimes called a retention pond, wet detention basin, or storm water management pond (SWMP), is an artificial pond with vegetation around the perimeter and a permanent pool of water in its design. It is used to manage ...

s have been built. In May 2013 and March 2014, the stream was polluted by a fluorescent green liquid, which caused a dying of

frog A frog is any member of a diverse and largely semiaquatic group of short-bodied, tailless amphibian vertebrates composing the order (biology), order Anura (coming from the Ancient Greek , literally 'without tail'). Frog species with rough ski ...

s. The authorities determined that the cause of the 2013 discoloration was deliberate waste dumping. The stream is listed as having category II water quality. It is also classified as a water flow with a protective corridor.

References

Geography of Zagreb Rivers of Croatia Trešnjevka {{Croatia-river-stub

See also

References