1. Quantitative and qualitative hydrologic balance for a suburban watershed with a separate sewer system (Nantes, France)
- Author
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M. Berthier, V. Ruban, Frédérique Larrarte, M.-L. Mosisni, G. Raimbault, Y. Sauvourel, L. Letellier, L. Favreau, Division Eau et Environnement (LCPC/EAU), Laboratoire Central des Ponts et Chaussées (LCPC)-PRES Université Nantes Angers Le Mans (UNAM), Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Institut de biochimie et biophysique moléculaire et cellulaire (IBBMC), and Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)
- Subjects
Pollution ,Environmental Engineering ,Watershed ,Nitrogen ,Rain ,020209 energy ,media_common.quotation_subject ,Glycine ,02 engineering and technology ,010501 environmental sciences ,Waste Disposal, Fluid ,01 natural sciences ,Metals, Heavy ,Spring (hydrology) ,Water Movements ,0202 electrical engineering, electronic engineering, information engineering ,Polycyclic Aromatic Hydrocarbons ,[SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology ,0105 earth and related environmental sciences ,Water Science and Technology ,media_common ,Hydrology ,Pollutant ,geography ,geography.geographical_feature_category ,Herbicides ,Hydrocarbons ,6. Clean water ,13. Climate action ,Diuron ,Storm water runoff ,Environmental science ,France ,Seasons ,ACL-EB ,Surface runoff ,Surface water ,Water Pollutants, Chemical ,Environmental Monitoring - Abstract
A qualitative and quantitative budget at the outlet of the storm-water runoff system of a small suburban watershed is presented together with some data regarding waste-water. 445,000 m3 (34% of the rain-water volume) were drained by the storm-water runoff system and 40,879 m3 by the waste-water system from September 2002 to March 2004. Storm-water runoff is generally not heavily polluted with regard to trace metals but concentrations occasionally exceed the standards for surface water of good quality. On the contrary, pesticides (diuron and glyphosate) have very high concentrations especially in spring and autumn when their use is maximum. As the St Joseph storm-water runoff is finally discharged into the Erdre River, measures to reduce the use of these pollutants should be considered.
- Published
- 2005