Chapter 3 - Agence de l`Eau Seine Normandie
Transcription
Chapter 3 - Agence de l`Eau Seine Normandie
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' 6& & 4 %) '( % 9 > : ! *2 ! ) : < & !$F ' + % ' 3 B & F ) & '1 ! ! & B@ % & '( 9M. F:' 6 (! / !"55 ) ) & % & '( ) 766 ' > ' ( % !5F !$ % L 6& • 4 ' * % ) #$F '( & 8 ' ; ' & 5 ( ! ) & ) &% + % & 9!#F ! # 0 # , & &% ) ) & + ' % # &% % % , : Dried pulses and protein plants 5% Industrial beet 5% Folder maize 5% Temporary and artif icial grassland 3% Wheat 33% *):.- $,":()9%/-%(* )& -.* 8"+)& Permanent grassland 25% $%(9* ? C ,7 4.6-2672 62282 )60<8 ,9./8 967+3-* 485.,7 3- ./8 643- 34 K 4;6 ; ' ) Grain maize 3% ):%(* 9 C:' Sun f low er 1% Rapeseed 9% Barley and w inter barley 11% /8 @ & & '( & 4#F ; $"F + • 9 ' 6 & + 9 B@:% ) • % A()5"%B C :(*+-* C >3003,- )" ,%*& . ( % %*&' %& , %-+. + . *#+- %*& 6& & & % & 9 % ) , %@ 92 ) & ) & @ , % C:% % % & A :' & & & % & & L < % !#F C %# 766; & 5 F %& '( ' > %& • % 8 $ "!F % % ) & & ( & ; & ) %) ) & < : • & & 2 ) • & % '.F & !"# % &) & %( N ) > & :< ) %= & 9@ ? & 0 % &O , ' ( , & 9 '$ , % 0 % 766% $F 9. F & 'A :% ) 9" F & % : * ' Sector 3)84.,5E <-3.4 "8/* Cattle 2,189,309 Pigs 95,342 5*(5)*6 $, )5*+-$97 &)-+ )& 6 ) 9 & %) & Miscellaneous Total 102,854 2,467,353 )& -.* *)&* $(0 "&'1 8"+)& $%(9* F & & % % Poultry 79,850 6 !$F:' ) ) % & & && & ' % 4;6 ,+3-6-. .1A84 ,9967+3-* ,- ./8 >6434 ,9./8 G ,9967+4 3- 865/ 56-.,8-8760 57,A4( 878604( ,30 48824 ? A<0484 878604( ,30 48824 ? A<0484 878604( ,30 48824 ? A<0484( 76>08 57,A4 ? /87>3),784( /88A ? *,6.4 67E8. *6728-3-* ? /,7.35<0.<78( ./87 5,+>3-6.3,-4( 878604( ,30 48824 ? A<0484 67E8. *6728-3-* ? /,7.35<0.<78 ./87 5,+>3-6.3,-4 76>08 57,A4 ? /87>3),784( /88A ? *,6.4( 878604( ,30 48824 ? 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" • • • • • #' ) < & 8 & , 9J LA % ) ) '( '( D )(*&D *$'*D ) , 9 0 % ) #' 8 (*"7'$6& $,6"-*(6"1 -(",,)9 81 9"-*:$(1 $,0 *(9."&')+* $%(9*? & D %($0 "##)&: & %) ; C G * $%# % ) :% % ; % & & % ) & # ! ! 0 -A65E82 +875/6-2348 3- /86A4 F5,-4.7<5.3,- +6.873604( 5,60( ,78( 5878604( 8.5 H 4;6 3-87604 ?5,-4.7<5.3,+6.873604 G 8.600<7*1 A7,2 G 9" F:< ):%(* 4 G 8.7,08<+ A7,2 G ) 4% 87.303=874 784 ? ;64.8 9,7 +8.600<7*1 ( G + P!4 5/8+35604 G ,60 G 2 < ) & & 345 +6-<965.<782 *,,24 G 67+ A7,2 ,,2 A7,2 G G :< I ( '( > ' ! & % ) ) & % G 4 * & 8 • •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ommerce (x 10 thousands tonnes) *Petroleum products: 64% * Container traffic: 21% * Miscellaneous goods: 20% * Industrial bulk (coal, chemicals...): 9% * Road traffic: 4% Passengers (x 000 passengers) Fishing (x10tonnes) 2000 Volume of activity Cros Channel traffic: 93% Cruise ships: 7% Marina (number of moorings) * Agrifood bulk(wheat, sugar, flour): 50% * Industrial bulk (refined oil products, chemicals, coal…): 50% NB: cumulative activities of 5 sites: Rouen, Saint-Wandrille Le Trait, Radicatel, Port-Jérôme, Honfleur 1500 1000 500 ):%(* Granville Diélette Barneville-Carterêt Cherbourg Barfleur Saint-Vaast-la-Hougue Grandcamp Port-en-Bessin Courseulles-sur-Mer Caen-Ouistréham Dives-sur-Mer Deauville-Trouville Honfleur 1#*+ "&' 5$/%0 * $,"9-)5)-1 $,-.* 0 ")& #$(-+ )& $(0 "&'1 ! 6 • • • • • Rouen Le Havre Fécamp Saint-Valéry-en-Caux Dieppe Le Tréport 0 ! E & % % 5F #.! & 2 ) 7 $ % ; ) ,& %$!. 8 & < 2 ) : :< %) ! < 9#4F 2 ) & : 7 ' % 8 & 9 6 % , 95 F 2 ) P! # :% "5(*!,)+.)&: '"-"?,)+. 0 "(7*-+ $, $(0 "&'1 + & ) $%*&! & P!! 9# % 2 ! 95% 8 : ' & ) ' ( $F & 0 $ F + 44F + 9 & :% ' ( ' , % & ) 'S ) ) & ' ( @ & P!4'# 4;6 P.5'. ' % ) P$ '" & & % 94!%$ & !: & %) & @ @ 2 9 : !%$ @ K!!' ' !$% & ) &% ' P!'!$ % ; ) 9 % & & :% & ) ,' , ) & ' ' 5!F 5"F 8 * '( )' # * % " # 10 direct jobs MARINE FISH FARMING €2m INLAND TROUT FISHING 210 direct jobs €20m 35 direct jobs FISH POND FARMING €3m 2,150 direct jobs SHELL FISH FARMING €107m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ater skiing 7% & % % 8 % * & , , &% % Motorboats 3% ) & ' % &% , ) ) 9& ):%(* 4;6 ) ' Triathlon 18% Sailing 32% & * & :' /%8+ ,$("F%"-)9 "9-)5)-)*+ )& -.* 8"+)& Canoeing Kayak 27% Rowing 13% & ! . 9 & ( + % % &$ " & #F ) + - + * '$ '! & & P! P '$ '( % , '# ' 9 ) :' * '9 * 0 :' & Champagne Burgundy Centre 4% Ardenne 2% 6% Ile de France 3% ! &:% ' 0 !'$ + # : Champagne Ardenne 10% Normandy 82% ):%(* 2 ."(* $,-.* (*:)$&+ )& 8"-.)&: ;#($#$(-)$& $,-$-"/ &%0 8*($,5)+)-+< + & Burgundy 5% Picardy 3% 4;6 :' ( $5' ' & P! & 2 @ : ' & 9 ! # ) & '( 9 K4# 1 & ;4 ' ) & * :' ) * 9 Centre 3% Normandy 27% Picardy 5% Ile de France 50% ):%(* ."(* $,-.* (*:)$&+ )& 6"-*(+#$(-+ ;#($#$(-)$& $,-$-"/ &%0 8*($,5)+)-+< ) &% % % # I ) * " " # ) & % & '1 & ; &) % & 9 :' ( )% )% 9 & 9& 9 ) & & % & ( : ) ) & ) 9 '$ @ : 1 !""$% . F) ! ! ) $! 9 & 9! F % :' @ @ %) G F ) ) & % % ) ) ) ) .F 9 @ :% 94 @ :' ) & C:' 1 !""$% # ) ) & '( ) ,;87 ,9/127,8085.735 4.6.3,-4 4;6 & ) ' "# :% :' & $! & * 1'($*/*9-()9 #$6*(+-"-)$&+ )& -.* 8"+)& % 5 6 ( ) & % & & # " " ) & 9B :% ) & %& 0 8 # ) # ) & ) ; 0 ) 8 & '( & 9) :% ' Uses 9 ) ) & Users (thousands) Jobs (thousands) Economic weight (€ million) 6& 1 B : 45% of outlets in the basin, 28% in the rest of France, 26% exported 17,500 23 in water and sewerage (13 & services private sector) Turnover of water and sewerage services = 2,250 1,600 145 (of which 30 related to water) Economic dimension (SGM) 8,000 = 6,400 touristic visits 4 (of which 19.5 related to water) (of which 3 in commercial navigation) Turnover = 332,511 (of which 4,100 related to water) Turnover = 370 (of which 130 for commercial navigation) 3 Turnover = 500 LINKS BETWEEN WATER USES AND WATER MANAGEMENT ISSUES IN THE BASIN: RESPONSIBILITIES OF THE DIFFERENT USES AND INCONVENIENCES POTENTIALLY SUSTAINED BY THOSE USES FOR EACH ISSUE Chemical pollution Workings of aquatic environments Drought and flooding Eutrophication Microbiological contamination 4;6 Stormwater runoff Extra cost of drinking water Health impact Degradation of rivers Impoundments Stormwater runoff Degradation of the natural purification function of wetlands Flooding Stormwater runoff 73% groundwater extraction 61% surface water extraction Damage to property and the environment 45% of phosphorus emission Stormwater runoff Extra cost of drinking water and degradation of rivers and coast Waster water treatment plant discharges Stormwater runoff Health impacts 70% of phytosanitary product 90% of ‘Metox’ emissions emissions Erosion, drainage, pressure on wetlands Hydroelectricity: hydromorphological damage Losses of materials being transported 1 mt chemicals and fertilizers Hydromorphological damage Disappearance of migratory fish 18% groundwater 9% groundwater extraction, Maintenance of navigable but irrigation is sometimes the abstraction, 38% surface routes leading cause of abstraction water extraction excl. Modification of flow locally EDF ; 61% incl. EDF 23% of phosphorus emissions 80 to 90% of nitrate emissions Discharges from farms ? 500 extraction sites: hydromorphological damage Modification of flow Aquaculture Coastal fishing Recreational fishing Bathing Aquatic leisure activities 450 10,000 to 60,000 3,000 Uses Users (thousands) Jobs (thousands) Economic weight (€ million) 2.4 3.3 ? ? 1 Turnover = 138 Turnover =108.4 Expenditure = 100 Expenditure (coast) = 370 to 1,000 Club budget = 30 LINKS BETWEEN USES OF WATER AND WATER MANAGEMENT ISSUES IN THE BASIN: RESPONSIBILITIES OF THE DIFFERENT USES AND INCONVENIENCES POTENTIALLY SUSTAINED BY THOSE USES FOR EACH ISSUE Chemical Pollution Workings of aquatic environments Drought and flooding Eutrophication Microbiological Contamination Trophic concentration of Concentration of pollutants by pollutants by fish: health filter feeders: health risk risk Hydromorphological damage to coast Excessive abstraction locally Dredging Degradation of biodiversity Degradation in quality: health impact Obstacles to free circulation of fish Lack of water Trophic imbalance Health impacts Degradation of microbiological quality of coastal waters Degradation of biodiversity and decrease in quantity Damage due to development Damage due to development Lack of water Lack of water Degradation in aesthetics Degradation in aesthetics and biological quality and biological quality Degradation of Degradation of microbiological quality of microbiological quality of the water water: health impact % 4;6 ! !! 7 ( • • • • ) ) & & ; & ) & & + 9 ( & ) ! " ' : ) ' ' ! ' '( ) ' ( & # '+ > ' & ) % % ' & * % ) ) & ) 9 :' ( ) * ! ) !' 1 & 89 * A : - : & ; ) # ' ( ' 9 % ) ) ) & 9 I M: ) & & ) & ) '( & 0 & '1 & * ! & ' ) & ' ( 0 & 9 & :' ( 0 & :' & 0 ) & 9 A % ) & ' & ' & % & A '( ' ) ) * & ) 6 6 ) 8 & ,<: ' ! ) ) + ) ) %) ) '( ) > + ) ) ' '$ ) ) , , & ' I & 'B , ) , & % ) ) 0 ' ! 3.739356.3,-L .76-49,7+6.3,- ,9782<582 -3.7,*8- F6++,-3<+( 9,7 3-4.6-58H 3-., -3.76.84 >1 ./8 65.3,- ,9 >65.8736 & 4;6 PUBLIC SEWERAGE STORMWATER INDUSTRIES Estimated gross flow on the Basis of the housing Survey in the 1999 census Annual flow divided By 365 days 665 KT/yr UGB 89 KT/yr Autopurification & cleaning Of networks 6218 KT/yr 125 KT/yr 1095 KT/yr Industrial pre-processing 137 KT/yr 758 KT/yr Single N. 50 KT/an Estimation SIEE 1502 KT/yr 67 KT/yr 282 KT/yr 76 KT/yr AGRICULTURE Basis of calculation Of pollution tax Treatment in centres Single network : 30 KT/yr Single network : 20 KT/yr Industrial waste treatment Separate network 26 KT/yr 1 % Leakage 603 KT/an (treatment plant input) 5,1 KT/yr Separate N. 21 KT/yr Individual Sewerage Public wastewater treatment Treatment 0 Dispersed discharges Separate N. 2,6 KT/yr Discharges into Environ.l (KT/yr) 21 157 2,6 Public sewerage 15 millions inhabitants 183 110 9 Individual sewerage 2 millions 62 Pollution ouput flows (g/inhab/day) DBO DCO NR 54 122 12 MES 70 MP 2,5 Industrial discharges: 6d/weeks ):%(* + ) • & > ) & ) ) % ) * ( & 9 A % ) % > & )& -.* 8"+)& ) ) & ) ) ' 7 * &' ( ) A & , %) & '* A '( & & % ! " ; @ ) % ' + D& # % 1 & 4;6 & ) ) $ & % ! & & & # ! ' & > & ) '2 ) ) A :% %) * & ! % $ ' * + A ; • J /$8"/ ,/$6+ $, ) ' T + ( & 0 #6736.3,- ,9 "# F+*D0H 5,-58-.76.3,- 0 #"9-+ )&'%9*' 81 ')+9."(:*+ ,($0 6"+-* 6"-*(-(*"-0 *&- #/"&-+ "&' )&'%+-(1!81 ()5*(8"+)& =$&* "# 2 4;6 "-*(F%"/)-1!$(:"&)9 "&' $B)')+"8/* 0 "--*( ' " ( 6 '+ ) ( ) & &% ) 9 : '6 ) ) & & & & & ' ' 9 & % & % ) & C: ) % ' I& & & ) ) ' --<60 4,30 87,43,- 965.,7 #871 0,; ,; )876*8 3*/ #871 /3*/ 7>6- =,-8 , 26.6 +A785348 236*-,434 "# )+7 $,*($+)$& + ' + * & 4;6 % > ) & & % , ' Public sewerage Stormwater INDUSTRIES Estimated gross flow on the Basis of the housing Survey in the 1999 census Annual flow divided By 365 days 383 KT/yr AGRICULTURE Basis for calculation Of pollution tax 2843 KT/yr 51 KT/yr 55 KT/yr Estimation SIEE 93 KT/yr 416 KT/yr UGB 4 650 KT/yr 2750 KT/yr Networks cleaning Industrial pre-processing 51 KT/yr 388 KT/yr Single N. 100 KT/yr Single network : 60 KT/yr Single network : 40 KT/yr Industrial Waste treatment Separate networks 52 KT/yr 1 % Leakage 394 KT/an (treatment plant input) 10 KT/yr Separate N. 42 KT/yr Individual Sewerage Public wastewater treatment Treatment Separate N. 4 KT/yr Dispersed discharges Discharges into Environ.l (KT/yr) 42 4 Public sewerage 15 millions inhabitants 85 53 5,1 46 41 Individual sewerage 2 millions MES 70 Pollution output flows (g/inhab/day) DBO DCO NR 54 122 12 MP 2,5 Industrial discharges: 6d/weeks ):%(* ( ( /$8"/ ,/$6 $, ) ) ) & ) ) ) " $ ) ) & - *& '+ 2 - 3 & ) * % % & ) % 1 > 9 @ ) , ) % % & & C ) 9@ ) & % @ !":% , 9 : ) :% & G & 4;6 ' ' , & ) & > 8 % ( & )& -.* 8"+)& 1 ' + & :' 6 & > 9 '&' ) % "# )" $ E%"/)-1 $,+%(,"9* 6"-*(!+%+#*&'*' +$/)'+ - *& -* ' . &# &'% %*& . 3 1 ' 9 ' & :' !'4$ - % & % % ' -" $ - *& , *+ * 55 # ) ) * " 9 % 0 & !% & ' ( & ( ' ) ) , &) , ) , ' + ) & & ) ' 7 0 - : * & % ) @ % ) & ) % & ' One of the key issues in the basin is to limit soil erosion • suspended solids due to soil erosion, in particular in arable farming areas (Brie) and winegrowing regions (Champagne and Chablis), silt up riverbeds and carry with them pesticides and nutrients, • the turbidity of groundwater in karstic zones (Pays de Caux) causes problems for drinking water supply. 4;6 , 4 " 84 : stormwater 8 = ': Public sewerage INDUSTRIES Estimated gross flow on The basis of the housing Survey in the 1999 census Annual flow divided By 365 days AGRICULTURE Basis for calculation Of pollution tax 27 KT/yr 8,8 KT/yr 67,5 KT/yr Estimation SIEE 6,3 KT/yr SURPLUS 1,9 KT/yr UGB 292 KT/yr Industrial Pre-processing 0,3 KT/yr 7,3 KT/yr SOLS 5 kT/yr Single network : 2,9 KT/an Single network : 1,8 KT/yr mechanims: see specific diagram of flows in the Seine basin Industrial waste treatment Separate network 2,6 KT/yr A.N.C. Public wastewater treatment Treatment 1% Leakage to : Aquatic Environment Non saturated zone 70 KT/yr (treatment plant input) 0,5 KT/yr Separate N. 2 KT/yr 173 KT/yr 0,6 KT/yr 71,5 KT/yr Single N. 4,7 KT/yr UGB Fertilizer 20 KT/yr Dispersed Discharges 220 to 350 - increase in aquifers: 5070 KT/an - denitrification in soils and Aquatic environments ( 30% in Rainy periods, 50% in Dry periods) Separate N. 0,4 KT/yr Discharges into Envir. (KT/yr) 0,4 2 5,3 36,9 Public sewerage 15 millions inhabitants 5,7 ):%(* #+- # &% *, & C / ) 80 à 220 4,5 1,7 Pollution output flows (g/inhab/day) DBO DCO NR 54 122 12 MES 70 MP 2,5 /$8"/ ,/$6+ $,&)-($:*& )& -.* 8"+)& 6 & & 5,3 5,5 Individual sewerage 2 millions nitrate (N_NO3) Azote réduit (N_NK) Industrial discharges: 6d/week " 0,9 4 * , &%- " ) 9 ! & & : & ) & ' 1 ) , & & & ) %) % > ( ) & & , ) 8 % 9 I: % ) 0 & % 9A ' 6 ( ) ) $ 2 ' = ) & ' ; 0 & & '( % & 0 9 A : ) & ? 8-3.739356.3,- L .76-49,7+6.3,- ,9-3.76.84 3-., -3.7,*8- *64 >1 >65.8736 4;6 8 :' ! ) % ' )" <%#%' # &% *, &> &% ( & # ' ) ' + '( & ' , ) % # ' / ) ) ) ' & % & ( • •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nnual total nitrogen flows (tN/year) 16 0 00 14 0 00 12 0 00 10 0 00 8 0 00 6 0 00 4 0 00 2 0 00 ! ! YERES BRESLE SCIE ARQUES DUN SAANE VALMONT DURDENT SEINE Amont Poses EURE ANDELLE RISLE TOUQUES DIVES ORNE ANCRE ODON MUE SEULLES amont conf_Mue AURE VIRE amont conf_Aure SAIRE DOUVE AY DIVETTE 5"/%"-)$& $,-$-"/ &)-($:*& ,/$6+ )&-$ -.* +*" ; '"-"< - *& , *+ ( & A SIENNE SEE ):%(* " $ THAR SELUNE BEUVRON + OIR COUESNON 0 ! ) , &) ': & & & !% ' / # ': 9 / ! :' ) % & 9 6 ) , ) & ) 94 !5: :' 1 ' !""5 9 4 : 9 ) 2 !""4 %@ ) & !% $" %2 A ) %G % & & * & ) $ ' !!4:' , &) D % A '6 ) 9$ &- :' ( @ 9 % 6 % / % 6 0 ) % @ & ) 0 / :% ! % , ) 9 :' % 4;6 "# E%"/)-1 $,:($%&'6"-*(!&)-("-*+ nb of abstraction points abandoned 50 données : DDASS/DRASS NO3 : + 70 non dated values Pesticides : +1 non dated value 45 40 Nitrates pesticides 35 30 25 20 15 10 5 0 1993 ):%(* 4 1994 1995 1996 1997 1998 year 1999 2000 2001 2002 Data lacking from some départements 8+-("9-)$&+ "8"&'$&*' ,$(*B9*++ /*5*/+ $,&)-("-*+ "&' #*+-)9)'*+ ; #($5)+)$&"/< 4! One of the key issues for the basin: control diffuse pollution • nitrates of agricultural origin contribute to eutrophication of the coastline and excessive growth of algae, some of which are toxic for bathers and consumers of shellfish; • nitrates and pesticides compromise the production of drinking water, on an occasional basis from surface water and on a long-term basis from groundwater. & 4;6 * ( 7 , " & % # ) % ! ) ' & ' 1 * & , & ' ( & ' 5% . ) - %) , ) & & ! F > ' & , ! ' ; ) ) ( ' & & % ) '( A % 7 > O6 Stormwater Public Sewerage INDUSTRIES Annual flow divided Estimated gross flow On the basis of the Housing survey in the 1999 census Basis for calculation Of pollution tax By 365 days 2 ) ' AGRICULTURE Data : Etude Cyril HOSATTE 5,9 KT/yr 13,7 KT/yr UGB 5 KT/yr 2,1 KT/yr 1,28 KT/yr 3,8 KT/yr UGB 161 KT/yr 39 KT/yr SOILS Industrial pre-processing 15,5 KT/yr Inputs Fertilizer 1,6 KT/yr Single N. : 0,84 KT/yr Single network 0,5 KT/an Single network : 0,4 KT/an Industrial Waste treatment Separate networks 0,44 KT/yr mechanims: see specific diagram of flows in the Seine basin 1% Leakage 13,1 KT/yr (treatment plant input) 0,07 KT/yr Separate N. 0,37 KT/yr Treatment Public wastewater treatment erosion (2%) Individual Sewerage Dispersed discharges Discharges into Envir. (KT/yr) 0,37 Separate N. 0,07 kT/yr 7,7 0,07 Public sewerage 15 millions inhabitants 1,1 0,2 Individual sewerage 2 millions ):%(* @ 3,2 ) & '( ) & 4;6 MP 2,5 /$8"/ ,/$6 $,#.$+#.$(%+ )& -.* 8"+)& ) 2 ) 0,4 Pollution outputs flows (g/inhab/day) DBO DCO NR 54 122 12 MES 70 4 8 ) 2-6 8 ; A & & ) %@ & %/ % & '( & > ' ) ( ) & & % ' ' * 1 > ) ) ) !F ) ' % %) ) ) ) ) % ) , ! ) ) ' & ) , %) ) ) ) ) ' 1 9!"" !""":' ( & ) & & , ) & ) ) % '( * % ' ' ) ) 96 D : !' 4A853935 0,62 FE*D261DE+ H "# 4 * # ' .$+#.$(%+ #$//%-)$& #(*++%(* ;6"+-* 6"-*(-(*"-0 *&- #/"&-+ "&' )&'%+-(1< 81 6"-*( 8$'1 + ! ' # '6 ) 4;6 ! ! % ) ' ) , tonnes/year 14 000 1 400 12 000 1 200 10 000 1 000 8 000 800 6 000 600 4 000 400 2 000 200 0 0 2000*2001*2002* 1 9901 9911 9921 9931 9941 9951 9961 9971 9981 999 Flow of phosphorus through Poses ):%(* Phosphorus flow other rivers Average instantaneous flow Provisional data .$+#.$(%+ ,/$6+ $%- $,-.* 8"+)& , & 0 % '1 & & & ) '1 9A 6 :' !"".% ) ) m3/s ) & 9 & : )' Estimation of total quantities of phosphorus discharged per population equivalent & perd ay : period 1999-2001. ‘data sources: SIAAP, raw effluent Seine Downstream station Daily quantity of total phosphorus discharged per population equivalent (g total P/PE day) 3,20 3,00 EH (g Pt/ EH.J) 2,80 2,60 2,40 2,20 2,00 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 années ):%(* +-)0 "-)$& $,#.$+#.$(%+ *0 )--*' #*(#$#%/"-)$& *F%)5"/*&- * + + & % % & ) ; 6 % 92 % ) % 9 % 6 C:' 1 ' 4;6 % 2 & & 1 1 C: * /,4A/,7<4:5,-.63-3-* 4<>4.6-584 "# "-*(F%"/)-1!#.$+#.$(%+39$&-")&)&: +%8+-"&9*+ One of the key issues for the basin: limit eutrophication • phosphorus is the main factor in the eutrophication of water courses; • nitrates are the major factor in eutrophication of the coast. 4;6