Lemme Explained

Lemme
Source1 Location:	Monte Calvo
Mouth Location:	The Orba at Predosa
Mouth Coordinates:	44.7648°N 8.6729°W
Subdivision Type1:	Country
Subdivision Name1:	Italy (Piedmont, Province of Alessandria)
Length:	34.3km (21.3miles)^[1]
Source1 Elevation:	750m (2,460feet)
Discharge1 Avg:	(mouth) 3.1m3/s^[2]
Basin Size:	180.5km2
Map:	Lemme_localizzazione.jpg

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

Geography

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 tributaries

left hand tributaries

• 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 tributaries

• rio Carbonasca: from Fraconalto goes till Voltaggio where it meets the Lemme;
• torrente Neirone:
• torrente Riasco: it collects the waters flowing in the area of Pasturana and Tassarolo and meets the Lemme near Francavilla Bisio.

Floods

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.

History

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]

Notes and References

1. Book: AA.VV. . Piano di Tutela delle Acque - Revisione del 1º luglio 2004; Caratterizzazione bacini Idrografici . 2017-05-14 . 2004 . Regione Piemonte . Elaborato I.c/5 . dead . https://web.archive.org/web/20120225054248/http://www.regione.piemonte.it/acqua/pianoditutela/allegati_tec/dwd/1/a/1_a-5.pdf . 2012-02-25 .
2. Book: AA.VV.. Piano di Tutela delle Acque - Revisione del 1º luglio 2004; Caratterizzazione bacini Idrografici. 2017-05-14. 2004. Regione Piemonte. Elaborato I.c/7. https://web.archive.org/web/20160303033444/http://www.regione.piemonte.it/ambiente/acqua/dwd/PTA/e_allegati_tecnici/I/Ic07.pdf. 2016-03-03. dead.
3. Carta Tecnica Regionale raster 1:10.000 (vers.3.0); publisher:Regione Piemonte - 2007
4. Book: Gazzetta universale . it . 1797 . November 4, 2015.