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Pesticides in Streams of the United States--Initial Results from the National Water-Quality Assessment Program

By Steven J. Larson, Robert J. Gilliom, and Paul D. Capel

U.S. GEOLOGICAL SURVEY
Water-Resources Investigations Report 98-4222
Sacramento, California, 1999


Table 10. Compounds with concentrations greater than the aquatic-life criterion in at least one sample, by type of site.

Number of compounds exceeding an aquatic-life criteria

Site

Compound(s)

AGRICULTURAL INDICATOR SITES

7

will-zollner

atrazine, azinphos-methyl, carbofuran, chlorpyrifos, diazinon, lindane, malathion

6

poto-mono

atrazine, azinphos-methyl, cyanazine, diazinon, malathion, metolachlor

6

splt-lone

atrazine, azinphos-methyl, chlorpyrifos, cyanazine, diazinon, dieldrin

5

whit-kess

atrazine, chlorpyrifos, cyanazine, malathion, metolachlor

4

cnbr-shell

atrazine, chlorpyrifos, cyanazine, trifluralin

4

sanj-orest

azinphos-methyl, chlorpyrifos, diazinon, trifluralin

4

sanj-salt

chlorpyrifos, diazinon, malathion, trifluralin

4

trin-chamb

atrazine, azinphos-methyl, diazinon, a-HCH

4

whit-sugar

atrazine, cyanazine, diazinon, malathion

3

cnbr-maple

atrazine, chlorpyrifos, cyanazine

3

cnbr-prairie

atrazine, chlorpyrifos, parathion

3

sanj-merced

azinphos-methyl, chlorpyrifos, diazinon

3

wmic-duck

atrazine, cyanazine, metolachlor

2

ccpt-crab.m

azinphos-methyl, triallate

2

ccpt-crab.rl

azinphos-methyl, chlorpyrifos

2

ccpt-el68

azinphos-methyl, chlorpyrifos

2

ccpt-palouse

lindane, triallate

2

lsus-eastm

atrazine, azinphos-methyl

2

poto-muddy

atrazine, metolachlor

1

acfb-aycocks

chlorpyrifos

1

albe-albe

azinphos-methyl

1

albe-pete

diazinon

1

hdsn-canaj

atrazine

1

redn-turtle

atrazine

1

will-pudding

azinphos-methyl

0

acfb-lime, albe-devils, gafl-little, gafl-tucsa, lsus-mill, ozrk-dous, ozrk-yocum, redn-snake, redn-wildr, usnk-rock, usnk-teton, wmic-nbmilw

URBAN INDICATOR SITES

    8

whit-little

atrazine, azinphos-methyl, chlorpyrifos, diazinon, malathion, metolachlor, parathion, cyanazine

    5

splt-cherry

diazinon, lindane, malathion, parathion, chlorpyrifos

    4

trin-rush

azinphosmethyl, diazinon, malathion, chlorpyrifos

    3

nvbr-lasvegas

diazinon, malathion, chlorpyrifos

    3

will-fanno

azinphos-methyl, diazinon, chlorpyrifos

    2

acfb-sope

diazinon, chlorpyrifos

    2

gafl-lafayette

diazinon, malathion

    2

poto-acco

diazinon, malathion

    1

conn-norwalk

malathion

    1

lsus-cedar

azinphos-methyl

    0

hdsn-lisha

 

INTEGRATOR SITES

    3

cnbr-platte

atrazine, chlorpyrifos, cyanazine

    3

whit-white

atrazine, chlorpyrifos, cyanazine

    2

sanj-sanj

azinphos-methyl, diazinon

    1

gafl-withla

malathion

    0

albe-tar, hdsn-moh, poto-shenan, redn-rr.fargo, redn-rr.em, wmic-milw



| Table 1 | Table 2 | Table 3 | Table 4 | Table 5 | Table 6 | Table 7 | Table 8 | Table 9 | Table 10 | Table 11 |

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