The Nonette is a

tributary A tributary, or affluent, is a stream or river that flows into a larger stream or main stem (or parent) river or a lake. A tributary does not flow directly into a sea or ocean. Tributaries and the main stem river drain the surrounding drainage ...

to the river

Oise Oise ( ; ; pcd, Oése) is a department in the north of France. It is named after the river Oise. Inhabitants of the department are called ''Oisiens'' () or ''Isariens'', after the Latin name for the river, Isara. It had a population of 829,419 ...

in northern

France France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of Overseas France, overseas regions and territories in the Americas and the Atlantic Ocean, Atlantic, Pacific Ocean, Pac ...

. It is long. Its source is in

Nanteuil-le-Haudouin Nanteuil-le-Haudouin () is a commune in the Oise department in northern France. In Popular Culture The town was shown in a map of France in the movie Inglourious Basterds and credited as the fictional town of "Nadine". See also * Communes of the ...

, from which it flows west through

Senlis Senlis () is a commune in the northern French department of Oise, Hautes de France. The monarchs of the early French dynasties lived in Senlis, attracted by the proximity of the Chantilly forest. It is known for its Gothic cathedral and other h ...

and

Chantilly Chantilly may refer to: Places France *Chantilly, Oise, a city located in the Oise department **US Chantilly, a football club *Château de Chantilly, a historic château located in the town of Chantilly United States * Chantilly, Missou ...

, and joins the Oise near

Saint-Leu-d'Esserent Saint-Leu-d'Esserent () is a commune in the Oise department in northern France. Saint Leu is notable for of mushroom caves under the Thiverny plateau. History During World War II, the caves were one of three major underground V-1 flying bomb ...

. The river has relatively high

turbidity Turbidity is the cloudiness or haziness of a fluid caused by large numbers of individual particles that are generally invisible to the naked eye, similar to smoke in air. The measurement of turbidity is a key test of water quality. Fluids can ...

and its brownish water has a modest velocity due to the slight gradient of the watercourse; pH levels have been measured at 9.25 or quite

alkaline In chemistry, an alkali (; from ar, القلوي, al-qaly, lit=ashes of the saltwort) is a base (chemistry), basic, ionic compound, ionic salt (chemistry), salt of an alkali metal or an alkaline earth metal. An alkali can also be defined as ...

Hogan, C. Michael, ''Water quality of freshwater bodies in France'', Lumina Tech Press, Aberdeen (2006) near the Château d'

Ermenonville Ermenonville () is a commune in the Oise department, northern France. Ermenonville is notable for its park named for Jean-Jacques Rousseau by René Louis de Girardin. Rousseau's tomb was designed by the painter Hubert Robert, and sits on the Isl ...

and

electrical conductivity Electrical resistivity (also called specific electrical resistance or volume resistivity) is a fundamental property of a material that measures how strongly it resists electric current. A low resistivity indicates a material that readily allow ...

of the waters have tested at 81 micro-siemens per centimetre.

References

Rivers of France Rivers of Hauts-de-France Rivers of Oise {{France-river-stub