1. Average Salt Content (mg per Liter)
SEASONAL SALT CONTENT IN A BALTIMORE STREAM
Population Density
(people per square mile):
______________________
Name: _____________
Class: _____________
Date: ______________
200
300
400
500
600
700
800
900
100
1900
2000
1800
1700
1600
1500
1300
1400
1100
1200
1000
Spring
Summer
Fall
Winter
2005
2006
2007
2008
2009
2010
100 mg/ L:
Maximum Salt Content allowed in NYC Drinking Water
1000 mg/L:
Kills some freshwater fish
250 mg/ L:
Maximum salt content allowed by EPA, tastes salty
Average Salt Content (mg per Liter)
Type of Stream:
Forest Stream
Suburban Stream
Urban Stream

2. Average Salt Content (mg per Liter)
ANNUAL SALT CONTENT IN
A BALTIMORE STREAM
Population Density
(people per square mile):
______________________
Name: _____________
Class: _____________
Date: ______________
200
300
400
500
600
700
800
900
100
1900
2000
1800
1700
1600
1500
1300
1400
1100
1200
1000
Type of Stream:
Forest Stream
Suburban Stream
Urban Stream
Average Salt Content (mg per Liter)
1000 mg/L:
Kills some freshwater fish
250 mg/ L:
Maximum salt content allowed by EPA, tastes salty
100 mg/ L:
Maximum Salt Content allowed in NYC Drinking Water
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009