The Jadro is a

watercourse A stream is a continuous body of surface water flowing within the bed and banks of a channel. Depending on its location or certain characteristics, a stream may be referred to by a variety of local or regional names. Long large streams a ...

Dalmatia Dalmatia (; hr, Dalmacija ; it, Dalmazia; see names in other languages) is one of the four historical regions of Croatia, alongside Croatia proper, Slavonia, and Istria. Dalmatia is a narrow belt of the east shore of the Adriatic Sea, str ...

Croatia , image_flag = Flag of Croatia.svg , image_coat = Coat of arms of Croatia.svg , anthem = " Lijepa naša domovino"("Our Beautiful Homeland") , image_map = , map_caption = , capi ...

, that discharges into the

Adriatic Sea The Adriatic Sea () is a body of water separating the Italian Peninsula from the Balkan Peninsula. The Adriatic is the northernmost arm of the Mediterranean Sea, extending from the Strait of Otranto (where it connects to the Ionian Sea) to th ...

. The upper reaches of the Jadro River, as well as its source,

Jadro Spring The Jadro Spring is a water source rising in the Dinaric Alps in Croatia. The spring was the original water supply for the ancient city comprised by Diocletian's Palace (now an area within the present day city of Split). Contemporary studies indic ...

, are protected as an ichthyological

nature reserve A nature reserve (also known as a wildlife refuge, wildlife sanctuary, biosphere reserve or bioreserve, natural or nature preserve, or nature conservation area) is a protected area of importance for flora, fauna, or features of geological o ...

, partly due to the presence of an

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found else ...

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriat ...

of soft-mouthed

trout Trout are species of freshwater fish belonging to the genera '' Oncorhynchus'', '' Salmo'' and '' Salvelinus'', all of the subfamily Salmoninae of the family Salmonidae. The word ''trout'' is also used as part of the name of some non-salm ...

. The headwaters of the Jadro River were the original

water supply Water supply is the provision of water by public utilities, commercial organisations, community endeavors or by individuals, usually via a system of pumps and pipes. Public water supply systems are crucial to properly functioning societies. Th ...

for the

ancient Ancient history is a time period from the beginning of writing and recorded human history to as far as late antiquity. The span of recorded history is roughly 5,000 years, beginning with the Sumerian cuneiform script. Ancient history cov ...

city comprised by

Diocletian's Palace Diocletian's Palace ( hr, Dioklecijanova palača, ) is an ancient palace built for the Roman emperor Diocletian at the turn of the fourth century AD, which today forms about half the old town of Split, Croatia. While it is referred to as a "pala ...

(now an area within the present day city of

Split Split(s) or The Split may refer to: Places * Split, Croatia, the largest coastal city in Croatia * Split Island, Canada, an island in the Hudson Bay * Split Island, Falkland Islands * Split Island, Fiji, better known as Hạfliua Arts, entertai ...

). Contemporary studies indicate favourable

water quality Water quality refers to the chemical, physical, and biological characteristics of water based on the standards of its usage. It is most frequently used by reference to a set of standards against which compliance, generally achieved through tr ...

levels of the river near the

headwaters The headwaters of a river or stream is the farthest place in that river or stream from its estuary or downstream confluence with another river, as measured along the course of the river. It is also known as a river's source. Definition The ...

.Nives Štambuk-Giljanović, ''The Pollution Load by Nitrogen and Phosphorus In the Jadro River'', Springer Netherlands, ISSN 0167-6369 (Print) 1573-2959 (Online), Volume 123, Numbers 1-3 / December, 2006
/ref> The Jadro flows through the town of Solin and has a length of approximately four kilometres' moreover, the river provides water to the cities of

Kaštela Kaštela (;) is a town in Split-Dalmatia County. The town is an agglomeration of seven individual settlements which are administered as a single municipality with populations individually ranging from 3,000 to 7,000 residents. The town is loca ...

and

Trogir Trogir (; historically known as Traù (from Dalmatian language, Dalmatian, Venetian language, Venetian and Italian language, Italian: ); la, Tragurium; Greek language, Ancient Greek: Τραγύριον, ''Tragyrion'' or Τραγούριον, '' ...

. People from Solin also call it Solinska rika. ''

Salmo obtusirostris salonitana ''Salmo obtusirostris salonitana'' (also termed by the common names soft-muzzled trout or Solin salmon and the scientific synonym '' Salmothymus obtusirostris salonitana'') is an endemic trout subspecies found in the Jadro River in the vicini ...

'' is an endemic

living in this river, which is currently

endangered An endangered species is a species that is very likely to become extinct in the near future, either worldwide or in a particular political jurisdiction. Endangered species may be at risk due to factors such as habitat loss, poaching and in ...

by the

rainbow trout The rainbow trout (''Oncorhynchus mykiss'') is a species of trout native to cold-water tributaries of the Pacific Ocean in Asia and North America. The steelhead (sometimes called "steelhead trout") is an anadromous (sea-run) form of the coast ...

References

Bibliography

* Rivers of Croatia Landforms of Split-Dalmatia County Drainage basins of the Adriatic Sea {{Croatia-river-stub