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ATLAS
295
http
://e
tat.
envi
ronn
emen
t.w
allo
nie.
be
Mos
elle
Esca
ut-L
ys
Meu
se
dow
nstr
eam
Ourt
he
Less
e
Sam
bre
Hai
ne
Meu
se u
pstr
eam
Sem
ois-
Chie
rs
Ambl
ève
Vesd
reSe
nne
Dend
re
Dyle
-Get
te
Oise
MAP 26ANALYSIS OF THE COMPONENTS OF THE ENVIRONMENT
BIO
LOG
ICA
L ST
ATU
S O
F SU
RFA
CE W
ATE
R B
OD
IES*
WAT
ER 3
SOER
W 2
017
– So
urce
: SPW
- D
GO3
- DE
MNA
010
20 K
m
Stat
us c
lass
es a
ccor
ding
to
biol
ogic
al in
dica
tor
grou
ps**
(20
15)
Hig
h G
ood
Mod
erat
e P
oor
Bad
Unk
now
n
Maj
or w
ater
cou
rses
Rive
r su
b-ba
sin
boun
dary
Surf
ace
wat
er b
ody
boun
dary
* La
kes
not
incl
uded
**
The
fou
r bi
olog
ical
indi
cato
r gr
oups
are
dia
tom
s, m
acro
phyt
es,
mac
roin
vert
ebra
tes
and
fish.