Oglio

For the record label, seeOglio Records.

Oglio
The river betweenSoncinoandOrzinuovi
Course of the river Oglio
Native name	Òi/Ùi(Lombard)
Location
country	Italy
region	Lombardy
provinces	Brescia,Bergamo,Cremona,Mantua
Physical characteristics
Source	Valle delle Messi,asFrigidolfobranch
• location	nearPunta Valmalza,Sobretta-Gavia Group,Ortler Alps,Lombardy
• coordinates	46°20′31.5″N10°27′03.5″E
• elevation	3,035 m (9,957 ft)
2nd source	Lake Ercavallo,Valle di Viso,asArcanellobranch
• location	at the slopes ofCima di Caione,Ortler Alps,Lombardy
• coordinates	46°20′21.1″N10°31′35.5″E
• elevation	2,621 m (8,599 ft)
3rd source	Lake Pisgana,asNarcanellobranch
• location	Narcanello Valley,nearVedretta di Pisgana,Presena glacier,Adamello-Presanella Alps,Lombardy
• coordinates	46°12′22″N10°31′49″E
• elevation	2,500 m (8,200 ft)
4th source	Ogliolobranch
• location	Corteno Valley,on the provincial border betweenCorteno Golgi,province of BresciaandAprica,province of Sondrio,Lombardy,nearZappello dell'Asino
• coordinates	46°08′52″N10°09′54.2″E
• elevation	1,172 m (3,845 ft)
Source confluence	confluence of Frigidolfo and Narcanello branches
• location	Ponte di Legno,province of Brescia,Lombardy
• coordinates	46°15′32.7″N10°30′28.7″E
• elevation	1,253 m (4,111 ft)
Mouth	Po
• location	at the municipal border betweenMarcariaandViadana,province of Mantua,Lombardy
• coordinates	45°02′40″N10°39′37″E
Length	280 km (170 mi)
Basin size	6,649 km2(2,567 sq mi)
Discharge
• average	137 m3/s (4,800 cu ft/s)
Basin features
Progression	Po→Adriatic Sea

View of the confluence of theFrigidolfobranch (left) and theNarcanellobranch (right),Ponte di Legno

River Oglio atBerzo Demo,Val Camonica

TheOglio(Italian:[ˈɔʎʎo];Latin:OlliusorOlius;Lombard:Òi,Cremonese:Ùi) is a left-sidetributaryof the riverPoinLombardy,Italy.It is 280 kilometres (170 mi) long. In the hierarchy of the Po's tributaries, with its 280 kilometres (170 mi) of length, it occupies the 2nd place per length (after the riverAdda), while it is the 4th per basin surface (afterTanaro,AddaandTicino), 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 theAdamellogroup and the Frigidolfo branch, in theCorno dei Tre Signori,part of theStelvio National Park.The streams merge near Pezzo diPonte di Legno,both the streams have an average discharge of 1.5 m³/s (53 cu ft/s). The Frigidolfo branch, before merging with Narcanello branch, receives the Arcanello branch, which have an average discharge of 0.5 m³/s (18 cu ft/s), which receives a minor branch originating from Lake Ercavallo. The Ogliolo stream, with an average discharge of 2.5 m³/s (88 cu ft/s) and a length of 20 kilometres (12 mi) (similar to the length of the main branch between theFrigidolfo-Narcanello mergeat Ponte Di Legno and theOglio-Ogliolo mergeat Edolo) is sometimes considered as ade factofourth branch of the Oglio river.

It flows in a southwest direction, throughValcamonicaand enters into theLake IseoatCosta Volpino.It leaves Lake Iseo at Sarnico and, after traveling a zone ofmorainedeposits, it joins the Po river at Torredoglio, not far from Cesole and Scorzarolo, in theprovince of Mantua.Itsdrainage basin,which corresponds to the region of Valle Camonica, covers 6,649 square kilometres (2,567 sq mi). It is part of the larger Po-Adigebasin.

The course of the river main branch

Camonica Valleysection

The river in the Camonica Valley flows almost exclusively in theprovince of Brescia,entering in theprovince of Bergamoonly at45°51′38.2″N10°08′56″E,on the border betweenArtogne,Brescia andRogno,Bergamo.

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

• FrigidolfoandNarcanellobranches, also known asOglio FrigidolfoandOglio Narcanello,respectively, inPonte di Legnoat46°15′32.7″N10°30′28.7″Emerge forming the main branch
• Valpaghera,atVezza d'Oglio46°14′10″N10°23′59″E
• Valgrande,atVezza d'Oglio46°14′07″N10°23′48″E
• Ogliolobranch, atEdolo46°10′18.2″N10°20′03″E
• Rabbia,atSonico46°09′01″N10°20′44″E
• Remulo,at the border betweenSonicoandMalonno46°07′43″N10°19′56″E
• Allione,at the border betweenMalonnoandBerzo Demo46°05′24″N10°18′58″E
• Poiariver, atCedegolo46°04′37″N10°20′54″E
• Re,atSellero46°03′31″N10°21′05″E
• Re,atCapo di Ponte46°02′10″N10°20′43″E
• Clegna,atCapo di Ponte46°01′35.5″N10°20′38.6″E
• Figna,at municipal border betweenNadro,CetoandOno San Pietro46°00′45″N10°20′37″E
• Bléstream, at municipal border betweenCervenoandCeto46°00′32″N10°20′34″E
• Palobbiacreek, at municipal border betweenCetoandBraone,near the quadruple municipal border withLosineandCerveno45°59′35.5″N10°20′04.6″E
• Poiacreek, atLosine45°58′58.3″N10°19′15.4″E
• Re,atLosine,near the municipal border between withNiardo45°58′35″N10°19′02″E
• Lanicostream, at the municipal border betweenMalegnoandCividate Camuno45°57′05.5″N10°16′42″E
• Trobiolo,atCividate Camuno,near the municipal border withCogno,Piancogno45°56′03″N10°14′49.5″E
• Grignastream,Esinenear the municipal border withPiancogno45°55′14.3″N10°13′54.7″E
• Resio,atEsine45°54′25″N10°13′22″E
• Davineriver, atDarfo Boario Terme45°53′16″N10°11′04″E

• Budriostream, atErbanno,Darfo Boario Terme45°53′56.1″N10°12′00.5″E

• Dezzoriver, atDarfo Boario Terme45°53′16″N10°11′04″E

• Gleno,at the triple municipal border betweenVilminore di Scalve,ColereandAzzone

• Restream, atDarfo Boario Terme45°52′29.9″N10°09′52″E
• Orsocreek, atRogno45°50′57″N10°08′06″E
• Supinecreek, atCosta Volpino45°49′40″N10°06′16″E

Lake Iseosection

AtCosta Volpino,the Oglio river enters the Iseo lake with a mixeddelta-estuarymouth.

Thetributariesof the Iseo lake

Bresciaside:	Bergamoside:
theOgliomain branch at45°48′37″N10°05′47″E Borlezzastream, atCastro45°48′06.55″N10°03′45.49″E Rino di Vigolocreek, atTavernola Bergamasca45°42′40.64″N10°02′54.06″E Rinocreek, atPredore45°40′45.66″N10°01′01.27″E	Bagnadorecreek, atMarone45°44′25.98″N10°05′24.36″E Calcherecreek, atSulzano45°41′30.77″N10°06′03.28″E Cortelocreek, atIseo45°39′49.28″N10°03′00.43″E Opolocreek, atClusane,Iseo45°39′55.03″N10°00′04.42″E

Po Valleysection

The Oglio main branch leaves the lake at the provincial border betweenSarnico,BergamoandParatico,Brescia45°39′56.5″N09°57′24″Eand begins to follow (approximately) this provincial border. At the triple provincial border betweenTorre Pallavicina(Bergamo),Roccafranca(Brescia) andSoncino(Cremona)45°25′40.5″N09°53′07.5″Ethe Oglio begins to follow (approximately) the provincial border between the Brescia-Cremona provincial border.

The major tributaries in the Po valley are the following:

• Cherioriver, at the provincial border betweenPalosco,Bergamo andPontoglio,Brescia45°34′44.5″N09°50′30.53″E
• Mellariver, at the provincial border and triple municipal border betweenSeniga(Brescia),Ostiano(Brescia), andGabbioneta-Binanuova(Cremona)45°13′30″N10°13′10″E
• Chieseriver, at the triple provincial border betweenCanneto sull'Oglio(Brescia),Acquanegra sul Chiese(Mantua) andCalvatone(Cremona)45°08′28.01″N10°25′17.45″E

At this triple provincial border the Oglio river begins following the Mantua-Cremona provincial border, which leaves at the triple municipal border betweenAcquanegra sul Chiese(Mantua),Calvatone(Cremona) andBozzolo(Mantua)45°07′57″N10°29′32″Ewhere the river enters entirely in the Mantua province.

At the municipal border betweenMarcariaandViadana45°02′40″N10°39′37″E,the Oglio river enters the Po river.

External links

• Media related toOglio (river)at Wikimedia Commons