The river in the Park of Monza
|⁃ location||Alps, Italy|
|⁃ elevation||1,685 m (5,528 ft)|
|Length||130 km (81 mi)|
|Basin size||1,950 km2 (750 sq mi)|
|⁃ average||5.8 m3/s (200 cu ft/s)|
|Progression||Po→ Adriatic Sea|
The Lambro rises from the Monte San Primo, elevation 1,685 metres (5,528 ft), near the Ghisallo, in the province of Como, not far from Lake Como. After Magreglio it flows through the Valassina and the comuni of Asso, Ponte Lambro and Erba, entering Lake Pusiano with the name of Lambrone. The Lambro passes through Brianza reaching Monza and crossing its famous park (where king Umberto I was assassinated by Gaetano Bresci) in two branches which join again before the river passes through the eastern part of Milan. At Melegnano it receives the waters of the Vettabbia and, at Sant'Angelo Lodigiano, those of its main tributary, the Lambro meridionale ("Southern Lambro"), almost doubling its discharge. The Lambro flows into the Po near Orio Litta.
At 5.8 cubic metres per second (200 cu ft/s) the average discharge of the Lambro is relatively small, but it can be occasionally boosted to 40 m³/s or more by the Milanese water drains and dangerous floods are frequent in the rainy seasons.
According to Pokorny's Indogermanisches etymologisches Wörterbuch (Indo-European Etymological Dictionary), 1132 (legʷh-), Lambrus corresponds to Greek ἐλαφρός, meaning 'light (in weight), quick, nimble' ('leicht, flink' in German) and is related to Illyrian lembus (*lengʷho-s) 'light vehicle' ('leichtes Fahrzeug' in German), whence also Greek λέμβος. Pokorny cites Krahe, Gymnasium 59 (1952), p. 79.
Lambro drains a very densely populated and heavily industrialized zone, including a significant portion of the Milan metropolitan area with a population of more than 3,000,000. Before the construction of a treatment plant in 2002, almost all of the sewage from the city of Milan flowed untreated into the river, as well as industrial sewages.
Saboteur oil spill
Despite the implementation of sewage treatment, overall water quality remained poor, until the major disaster of 23 February 2010, when unknown criminals poured into the river, near Villasanta, the contents of several silos containing oil and other hydrocarbons, all belonging to a company named "Lombardia Petroli". This oily mass, estimated at over 2.5 million litres (660,000 US gal), followed the entire length of the river, despite both local authorities and civil defence's efforts in order to stop the flow, then reached Po river. This disaster caused considerable damage to wildlife and vegetation, both in Lambro and in Po, and its effects will be evident for many years afterwards, making it one of the worst environmental crises in recent history in Italy.
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- NICOLE WINFIELD "Lambro River Oil Spill May Create 'Ecological Disaster' In Italy" Huffington Post, 2010-02-24