N
N HC
P
N
P
P
N HC
PA
HC
PA
P
N HC
P
S
N HC
N
P
P
S
HC
PA
S
HM PA
S
S
S
P
S
PA
P
HC
S
N
P
PA
HC H C
S HC C
P
P
Exposure to contaminants can cause respiratory and neurological problems for people.
PA A
P
HC
S AQUATIC LIFE
HEALTH CONCERNS
N
S
N
HC
N
N
P
PA
P S
HC
P
N
P
N
HC
S
N
Seemingly insigniďƒžcant activities on multiple P individual sites lead to N large-scale impacts on S Pshared water resources. HC H C
Animals ingest contaminants when they eat or clean themselves.
P
S
P
N
S
S
PA
HC
S
N
PA
N
P
PA
big impacts
P
S
S
HC
HC
P
N
P
N
S
PA A
HC HC
S
PA
N
S
N
N
S HC HC
S
N
P
DAM MAINTENANCE
Sediment accumulation behind dams requires costly dredging and raises reservoir water S levels.
HC C
PA A
N
S
P
63