2018-19 NATIONAL RIVERS & STREAMS ASSESSMENT



Nutrient Pollution

44%

44%

32%





Elevated
Nitrogen

¦

24%



42%

42%

36%



Elevated
Phosphorus

23%

Nutrient pollution was the most
widespread stressor measured

Biological Condition

Good

28%



Fair

25%



Poor

47%

Less than one third (28%) were in

good condition based on
macro invertebrate communities

Good
Fair

Poor	# ) jE ) +E

NA OOO	5%=rO

Just over one-third (35%) of river and
stream miles had healthy fish
communities

Habitat & Human Health

i
i

78%

20%

Below

Above

Bacteria levels exceeded the EPA
human health benchmark in 20% of
river and stream miles*

56%

Stream bank vegetation was rated
good in 56% of river and stream
miles

https://www.epa.gov/national-aquatic-resource-surveys/nrsa

*2% Not Assessed

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