The Juridical is a

river A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases, a river flows into the ground and becomes dry at the end of its course without reaching another body of w ...

flowing through the

Idrija Hills Idrija (, in older sources ''Zgornja Idrija''; german: (Ober)idria, it, Idria) is a town in western Slovenia. It is the seat of the Municipality of Idrija. It is located in the traditional region of Inner Carniola and is in the Gorizia Statisti ...

and

Cerkno Hills The Cerkno Hills ( sl, Cerkljansko hribovje or ) is a transitional region between the Alpine and the Dinaric landscape, centered on Cerkno in northwestern Slovenia. Several passes in this area connect the Poljane Valley and the Selca Valley with ...

. It is long. It rises near Vojsko, flows towards northeast and after passing through

Idrija Idrija (, in older sources ''Zgornja Idrija''; german: (Ober)idria, it, Idria) is a town in western Slovenia. It is the seat of the Municipality of Idrija. It is located in the traditional region of Inner Carniola and is in the Gorizia Statisti ...

turns to the northwest. After passing through

Spodnja Idrija Spodnja Idrija (, in older sources also ''Idrija pri Fari''; german: Unteridria) is a settlement on the right bank of the Idrijca River in the Municipality of Idrija in the traditional Inner Carniola region of Slovenia. Name The name ''Spodnja Id ...

and

Cerkno Cerkno (; it, Circhina; ger, Kirchheim) is a small town in the Littoral region of Slovenia. It has around 2,000 inhabitants and is the administrative centre of the Cerkno Hills. It is the seat of the Municipality of Cerkno. Cerkno is a small ...

it joins the

Soča The Soča ( in Slovene) or Isonzo ( in Italian; other names fur, Lusinç, german: Sontig, la, Aesontius or ') is a long river that flows through western Slovenia () and northeastern Italy (). An Alpine river in character, its source lies i ...

Most na Soči Most na Soči (; formerly ''Sveta Lucija'' or ''Sveta Lucija na Mostu'', german: Sankt Luzia) is a town in the Municipality of Tolmin in the Littoral region of Slovenia. It is located on a rocky crest above the confluence of Soča and Idrijca riv ...

. It has a

pluvio-nival regime The river regime generally describes the character of the typical fluctuations of flow of a river, but can also refer to the mathematical relationship between the river discharge and its width, depth and slope. Thus, "river regime" can describe one ...

and belongs to 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 t ...

Basin. The river basin has an area of . The major

tributaries A tributary, or affluent, is a stream or river that flows into a larger stream or main stem (or parent) river or a lake. A tributary does not flow directly into a sea or ocean. Tributaries and the main stem river drain the surrounding drainag ...

are the Belch, Gala, Copernican, and Baa from the right and the Nikolai, Canonical, and Trebušica from the left. One of the right tributaries is also the Jezernica River, which originates from the

Wild Lake Wild Lake ( sl, Divje jezero) is a lake near Idrija in western Slovenia and a karst spring of the Vauclusian type. The lake is the source of the Jezernica River, a tributary of the Idrijca and, at long, the shortest river in Slovenia. Water flow ...

( sl, Divje jezekfv). Being only 55 m long, the Jezernica is the shortest river in Slovenia. The river has many fish, among which the ''

Salmo marmoratus ''Salmo marmoratus'', the marble trout, is a species of freshwater fish in the family Salmonidae. It is characterized by a distinctive marbled color pattern and high growth capacity. The marble trout is found in only a handful of drainages and ...

'', the rainbow trout, and the Grayling are noteworthy. In the past, timber was driven down the Idrijca to Idrija to be used as pillars in the

Idrija mercury mine Idrija (, in older sources ''Zgornja Idrija''; german: (Ober)idria, it, Idria) is a town in western Slovenia. It is the seat of the Municipality of Idrija. It is located in the traditional region of Inner Carniola and is in the Gorizia Statisti ...

. Special logging sluices (Sln. ''klavže'') were employed for this purpose from the 17th until the 19th century. The area of the upper Idrijca has been proclaimed the Upper Idrijca Landscape Park. It encompasses numerous karst features and diverse plant species. During World War II, Pavla Partisan Hospital stood there.

Tributaries

* Senčni potok * Nikova * Kanomljica * Otuška *

Sevnica Sevnica (; german: Lichtenwald''Leksikon občin kraljestev in dežel zastopanih v državnem zboru,'' vol. 4: ''Štajersko''. 1904. Vienna: C. Kr. Dvorna in Državna Tiskarna, p. 20.) is a town on the left bank of the Sava River in central Sloveni ...

* Trebuščica * Hotenja * Črni potok * Belca * Zala * Ljubevščica * Zaspana grapa * Skavnica * Peklenska graba * Grda grapa * Luknjica * Zaganjalčnica *

Cerknica Cerknica (; , german: Zirknitz''Leksikon občin kraljestev in dežel zastopanih v državnem zboru,'' vol. 6: ''Kranjsko''. 1906. Vienna: C. Kr. Dvorna in Državna Tiskarna, p. 120.) is a town in the Karst region of southwestern Slovenia, with a p ...

* Jesenica * Bukovška grapa * Žibernik * Doberšček * Bača

References

External links

*
Idrijca on Geopedia

- graphs, in the following order, of water level and flow for the past 30 days (taken in Podroteja by

ARSO The Slovenian Environment Agency (Slovenian: ''Agencija Republike Slovenije za okolje'' or ''ARSO'') is the main organisation for environment of the Republic of Slovenia. It was established in 2001 with a reorganisation of the ''Hydrometeorological ...

) Rivers of the Slovene Littoral Natura 2000 in Slovenia {{Slovenia-river-stub