Oglio

File:Nascita del fiume Oglio - Ponte di Legno.jpg

View of the confluence of the Frigidolfo branch (left) and the Narcanello branch (right), Ponte di Legno

File:Fiume Oglio verso sud - Forno d'Allione - Berzo Demo (Foto Luca Giarelli).jpg

River Oglio at Berzo Demo, Val Camonica

The Oglio (; Template:Langx or ; Template:Langx, Template:Langx) is a left-side tributary of the river Po in Lombardy, Italy. It is Template:Convert long. In the hierarchy of the Po's tributaries, with its Template:Convert of length, it occupies the 2nd place per length (after the river Adda), while it is the 4th per basin surface (after Tanaro, Adda and Ticino), and the 3rd per average discharge at the mouth (after Ticino and Adda).

Overview

The Oglio is formed from the confluence of two mountain streams, the Narcanello branch from the Presena Glacier, in the Adamello group and the Frigidolfo branch, in the Corno dei Tre Signori, part of the Stelvio National Park. The streams merge near Pezzo di Ponte di Legno, both the streams have an average discharge of Template:Convert. The Frigidolfo branch, before merging with Narcanello branch, receives the Arcanello branch, which have an average discharge of Template:Convert, which receives a minor branch originating from Lake Ercavallo. The Ogliolo stream, with an average discharge of Template:Convert and a length of Template:Convert (similar to the length of the main branch between the Frigidolfo-Narcanello merge at Ponte Di Legno and the Oglio-Ogliolo merge at Edolo) is sometimes considered as a de facto fourth branch of the Oglio river.

It flows in a southwest direction, through Valcamonica and enters into the Lake Iseo at Costa Volpino. It leaves Lake Iseo at Sarnico and, after traveling a zone of moraine deposits, it joins the Po river at Torredoglio, not far from Cesole and Scorzarolo, in the province of Mantua. Its drainage basin, which corresponds to the region of Valle Camonica, covers Template:Convert. It is part of the larger Po-Adige basin.

The course of the river main branch

Camonica Valley section

The river in the Camonica Valley flows almost exclusively in the province of Brescia, entering in the province of Bergamo only at Template:Coord, on the border between Artogne, Brescia and Rogno, Bergamo.

The following is a list (incomplete) of the tributaries in the Camonica Valley:

• Frigidolfo and Narcanello branches, also known as Oglio Frigidolfo and Oglio Narcanello, respectively, in Ponte di Legno at Template:Coord merge forming the main branch
• Valpaghera, at Vezza d'Oglio Template:Coord
• Valgrande, at Vezza d'Oglio Template:Coord
• Ogliolo branch, at Edolo Template:Coord
• Rabbia, at Sonico Template:Coord
• Remulo, at the border between Sonico and Malonno Template:Coord
• Allione, at the border between Malonno and Berzo Demo Template:Coord
• Poia river, at Cedegolo Template:Coord
• Re, at Sellero Template:Coord
• Re, at Capo di Ponte Template:Coord
• Clegna, at Capo di Ponte Template:Coord
• Figna, at municipal border between Nadro, Ceto and Ono San Pietro Template:Coord
• Blé stream, at municipal border between Cerveno and Ceto Template:Coord
• Palobbia creek, at municipal border between Ceto and Braone, near the quadruple municipal border with Losine and Cerveno Template:Coord
• Poia creek, at Losine Template:Coord
• Re, at Losine, near the municipal border between with Niardo Template:Coord
• Lanico stream, at the municipal border between Malegno and Cividate Camuno Template:Coord
• Trobiolo, at Cividate Camuno, near the municipal border with Cogno, Piancogno Template:Coord
• Grigna stream, Esine near the municipal border with Piancogno Template:Coord
• Resio, at Esine Template:Coord
• Davine river, at Darfo Boario Terme Template:Coord

• Budrio stream, at Erbanno, Darfo Boario Terme Template:Coord

• Dezzo river, at Darfo Boario Terme Template:Coord

• Gleno, at the triple municipal border between Vilminore di Scalve, Colere and Azzone

• Re stream, at Darfo Boario Terme Template:Coord
• Orso creek, at Rogno Template:Coord
• Supine creek, at Costa Volpino Template:Coord

Lake Iseo section

At Costa Volpino, the Oglio river enters the Iseo lake with a mixed delta-estuary mouth.

The tributaries of the Iseo lake

Brescia side:	Bergamo side:
the Oglio main branch at Template:Coord Borlezza stream, at Castro Template:Coord Rino di Vigolo creek, at Tavernola Bergamasca Template:Coord Rino creek, at Predore Template:Coord	Bagnadore creek, at Marone Template:Coord Calchere creek, at Sulzano Template:Coord Cortelo creek, at Iseo Template:Coord Opolo creek, at Clusane, Iseo Template:Coord

Po Valley section

The Oglio main branch leaves the lake at the provincial border between Sarnico, Bergamo and Paratico, Brescia Template:Coord and begins to follow (approximately) this provincial border. At the triple provincial border between Torre Pallavicina (Bergamo), Roccafranca (Brescia) and Soncino (Cremona) Template:Coord the Oglio begins to follow (approximately) the provincial border between the Brescia-Cremona provincial border.

The major tributaries in the Po valley are the following:

• Cherio river, at the provincial border between Palosco, Bergamo and Pontoglio, Brescia Template:Coord
• Mella river, at the provincial border and triple municipal border between Seniga (Brescia), Ostiano (Brescia), and Gabbioneta-Binanuova (Cremona) Template:Coord
• Chiese river, at the triple provincial border between Canneto sull'Oglio (Brescia), Acquanegra sul Chiese (Mantua) and Calvatone (Cremona) Template:Coord

At this triple provincial border the Oglio river begins following the Mantua-Cremona provincial border, which leaves at the triple municipal border between Acquanegra sul Chiese (Mantua), Calvatone (Cremona) and Bozzolo (Mantua) Template:Coord where the river enters entirely in the Mantua province.

At the municipal border between Marcaria and Viadana Template:Coord, the Oglio river enters the Po river.

External links

• Template:Commons category-inline