The Lemme is a 35 km torrent, a right tributary of the Orba, which flows through the Province of Alessandria in northern Italy.

Lemme
Voltaggio-lemme2.jpg
The stream near Voltaggio
Lemme localizzazione.jpg
Location within the SE Piedmont
Location
CountryItaly (Piedmont, Province of Alessandria)
Physical characteristics
Source 
 • locationMonte Calvo
 • elevation750 m (2,460 ft)
Mouth 
 • location
The Orba at Predosa
 • coordinates
44°45′53″N 8°40′22″E / 44.7648°N 8.6729°E / 44.7648; 8.6729Coordinates: 44°45′53″N 8°40′22″E / 44.7648°N 8.6729°E / 44.7648; 8.6729
Length34.3 km (21.3 mi)[1]
Basin size180.5 km2 (69.7 sq mi)[2]
Discharge 
 • average(mouth) 3.1 m3/s (110 cu ft/s)[2]
Basin features
ProgressionOrbaBormidaTanaroPoAdriatic Sea

GeographyEdit

Its source is near Monte Calvo; from there it passes through the communes of Fraconalto, Voltaggio, Carrosio, Gavi, San Cristoforo, Francavilla Bisio, Basaluzzo and finally Predosa where it enters the Orba.

Main tributariesEdit

left hand tributariesEdit

  • rio delle Acque Striate;
  • rio Morsone: it starts near Monte Tobbio and meets the Lemme in Voltaggio;
  • rio Ardana: its upper valley includes Bosio, from which flows northwards meeting the Lemme in Gavi;
  • rio Riolo: from San Cristoforo it runs not faraway from the Lemme meeting it near its confluence with the Orba.[3]

right hand tributariesEdit

FloodsEdit

The Lemme is characterised by an extremely variable discharge; very little water flows during the summer months, but it can also give rise to significant floods, such as those of 1978.

HistoryEdit

The Département du Lemo or Dipartimento del Lemo of Ligurian Republic took its name at the end of the 18th century from the stream.[4]

ReferencesEdit

  1. ^ AA.VV. (2004). "Elaborato I.c/5". Piano di Tutela delle Acque - Revisione del 1º luglio 2004; Caratterizzazione bacini Idrografici (PDF). Regione Piemonte. Archived from the original (PDF) on 2012-02-25. Retrieved 2017-05-14.
  2. ^ a b AA.VV. (2004). "Elaborato I.c/7". Piano di Tutela delle Acque - Revisione del 1º luglio 2004; Caratterizzazione bacini Idrografici (PDF). Regione Piemonte. Archived from the original (PDF) on 2016-03-03. Retrieved 2017-05-14.
  3. ^ a b Carta Tecnica Regionale raster 1:10.000 (vers.3.0); publisher:Regione Piemonte - 2007
  4. ^ Gazzetta universale (in Italian). 1797. Retrieved November 4, 2015.