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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 6. Agricultural use of selected pesticides per square kilometer of drainage basin.

[Values represent estimates for 1990-95 (see discussion in text). Crop group codes are defined in table 4]

Site code

Crop group code

Agricultural use in basin (kilograms per square kilometer)
   

Atrazine

Metolachlor

Cyanazine

Simazine

Chlorpyrifos

Diazinon

Carbofuran

Carbaryl

AGRICULTURAL BASINS

lsus-mill
    C
    27
 38 6.5 3.2 5.4 0.0 2.1 0.9

cnbr-prairie
    C
    51
 32 18 0.0 5.8 0.3 2.2 0.9

wmic-duck
    C
    14
 17 15 0.0 3.3 0.1 0.7 0.1

hdsn-canaj
    CA
    6.0
 4.0 2.9 0.5 3.7 0.0 0.6 0.0

poto-muddy
    CA
    13
 6.8 0.9 1.3 2.5 0.0 2.5 0.4

wmic-nbmilw
    CAv
    11
 14 13 0.0 2.6 0.0 0.5 0.2

cnbr-maple
    CS
    39
 27 13 0.0 4.6 0.2 1.8 1.7

cnbr-shell
    CS
    46
 31 16 0.0 5.5 0.3 2.1 1.4

whit-kess
    CS
    51
 32 18 0.8 2.0 0.0 1.1 1.3

whit-sugar
    CS
    48
 31 17 0.8 1.9 0.0 0.9 0.1

albe-pete
    CScot
    5.4
 17 1.3 0.7 12 0.5 2.3 1.9

albe-albe
    CSW
    8.7
 16 1.2 1.2 4.4 0.1 3.8 1.2

lsus-eastm
    CW
    12
 19 2.8 1.3 2.0 0.1 1.0 0.5

poto-mono
    CW
    10
 17 2.2 4.0 6.5 1.1 0.8 2.0

splt-lone
    CW
    2.7
 1.6 0.8 0.0 0.9 0.1 0.5 0.0

acfb-lime
    CWp
    11
 8.2 2.4 0.4 11.0 0.1 2.0 3.6

trin-chamb
    CWsor
    5.1
 2.3 0.9 0.0 0.9 0.0 0.5 0.9

ccpt-crab.rl
    WA
    2.4
 2.4 0.3 0.9 6.1 1.1 1.6 3.2

usnk-rock
    WAb
    0.2
 0.4 0.7 0.1 0.3 0.1 0.6 0.1

ccpt-palouse
    Wb
    0.0
 0.5 0.0 0.1 0.1 0.0 0.0 0.1

redn-turtle
    Wb
    0.1
 1.4 0.2 0.0 1.3 0.0 1.3 0.4

usnk-teton
    Wpot
    0.0
 0.8 0.0 0.1 0.3 0.0 1.2 0.0

gafl-tucsa
    WScot
    2.5
 6.2 7.2 0.3 9.4 0.0 0.6 3.1

albe-devils
    WStob
    0.8
 3.1 0.1 0.1 5.7 0.5 0.8 1.3

ccpt-crab.m
    W
    0.0
 0.0 0.0 0.0 0.1 0.0 0.0 0.0

ccpt-el68
    W
    0.1
 0.4 0.1 0.1 0.7 0.3 0.8 0.4

redn-snake
    W
    0.3
 0.9 0.2 0.0 0.9 0.0 0.7 0.2

redn-wildr
    W
    0.7
 1.2 0.5 0.0 0.3 0.0 0.1 0.0

gafl-little
    P
    6.9
 12 3.9 0.2 14 0.3 1.4 2.5

acfb-aycocks
    P
    10
 8.8 2.9 0.2 10 0.0 2.0 2.0

sanj-salt
    COTv
    0.2
 1.1 5.4 7.1 22 11 2.3 4.3

will-pudding
    FGv
    3.2
 6.1 0.0 1.8 4.9 3.1 0.1 2.9

will-zollner
    FGv
    6.7
 13.0 0.0 2.8 9.7 6.5 0.2 5.7

sanj-merced
    O
    0.1
 0.4 0.6 0.6 3.4 2.3 0.3 0.5

sanj-orest
    O
    0.6
 5.6 1.2 6.6 22 27 1.5 4.8

ozrk-dous
    XX
    0.7
 0.4 0.2 0.0 0.3 0.0 0.5 0.1

ozrk-yocum
    XX
    1.2
 0.0 0.0 0.0 0.0 0.0 0.0 0.2

INTEGRATOR BASINS

cnbr-platte
    CW
    8.0
 5.2 2.7 0.0 1.1 0.0 0.5 0.3

whit-white
    CS
    30
 18 11 0.5 1.2 0.0 0.6 0.2

wmic-milw
    CAv
    9
 11 10 0.0 2.1 0.0 0.4 0.1

hdsn-moh
    CA
    2.7
 1.8 1.3 0.2 1.7 0.0 0.3 0.0

poto-shenan
    CA
    4.3
 2.5 0.3 0.6 1.1 0.0 0.8 0.3

albe-tar
    CScot
    1.2
 5.9 0.4 0.2 6.7 0.5 0.7 1.2

gafl-withla
    P
    7.6
 6.7 4.0 0.3 9.7 0.2 1.7 2.3

redn-rr.fargo
    CSW
    2.2
 4.6 2.3 0.0 1.1 0.0 0.2 0.3

redn-rr.em
    W
    0.7
 1.7 0.7 0.0 1.0 0.0 0.4 0.2

sanj-sanj
    O
    0.1
 0.8 0.9 1.4 5.6 4.4 0.5 1.0

| 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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