Merderet

The Merderet is a 36.4-kilometre-long river in Normandy, France, which is tributary to the river Douve. It runs roughly north-south down the middle of the Cotentin peninsula from Valognes to the junction with the Douve at Beuzeville la Bastille.The river has relatively high turbidity and its brownish water is somewhat low in velocity due to the slight gradient of the watercourse; pH levels have been measured at 8.31 near the Chateau d'Isle Marie and electrical conductivity of the waters have tested at 61 microsiemens per centimetre. At this reference location, summer flows are typically around 7 m3/s .

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