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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 7. Load of total herbicides and insecticides and selected individual pesticides in streams as a percentage of agricultural use in the basin

[For some sites, data are shown for more than 1 year. Percentages were calculated only for compounds with use of 100 or more kilograms in the drainage basin. Agricultural use data from Gianessi and Anderson, 1996. kg, kilograms; –, use in basin was less than 100 kilograms]

Site code

Start of 1-year period

End of 1-year period

Use, in kilograms

Load, in kilograms

Load as a percentage of agricultural use in basin

     

Total herbicides

Total insecticides

Total herbicides

Total insecticides

Total

herbicides

Total insecticides

Atrazine

Cyanazine

EPTC

Metolachlor

Trifluralin

Carbaryl

Carbofuran

AGRICULTURAL BASINS

lsus-mill

3/93

3/94

13,000

1,400

50.6

0.33

0.39

0.02

0.30

0.03

--

0.10

--

0.06

0.00

lsus-mill

9/93

9/94

13,000

1,400

92.7

0.50

0.72

0.04

0.41

0.05

--

0.19

--

0.09

0.00

cnbr-prairie

4/93

3/94

40,000

8,500

100

2.5

0.25

0.03

0.37

0.02

0.00

0.29

0.00

0.08

0.22

wmic-duck

3/93

9/93

14,000

1,900

283

0.44

2.07

0.02

3.29

1.15

0.18

3.18

0.02

--

0.00

wmic-duck

3/94

9/94

14,000

1,900

26

0.14

0.19

0.01

0.37

0.14

0.01

0.24

0.00

--

0.08

hdsn-canaj

3/94

3/95

2,300

1,000

15.0

0.58

0.65

0.06

1.25

0.13

0.08

0.69

--

--

--

poto-muddy

4/93

4/94

740

230

7.0

0.01

0.95

0.00

1.26

--

--

1.46

--

--

--

cnbr-shell

4/93

3/94

88,000

18,000

447

18

0.51

0.10

0.70

1.18

0.01

0.19

0.04

0.16

0.91

whit-kess

3/93

3/94

21,000

1,400

366

1.8

1.76

0.13

1.63

5.13

0.05

1.83

0.03

0.27

0.53

whit-kess

3/94

3/95

21,000

1,400

261

5.7

1.26

0.42

1.74

0.77

0.03

1.45

0.01

0.00

2.80

whit-sugar

5/92

5/93

33,000

1,800

256

3.5

0.77

0.19

1.17

0.40

0.00

0.63

0.13

--

0.10

whit-sugar

1/93

12/93

33,000

1,800

153

2.0

0.46

0.11

0.83

0.10

0.02

0.39

0.05

--

0.04

whit-sugar

1/94

11/94

33,000

1,800

176

0.00

0.53

0.00

0.85

0.20

0.04

0.83

0.00

--

0.00

albe-pete

3/93

3/94

1,700

900

4.1

0.14

0.24

0.02

0.42

--

--

0.32

0.02

--

--

lsus-eastm

3/93

3/94

2,600

310

29.7

0.64

1.13

0.20

1.16

0.98

--

1.03

--

--

--

lsus-eastm

9/93

9/94

2,600

310

55.7

4.1

2.11

1.31

2.23

2.42

--

2.06

--

--

--

poto-mono

3/94

3/95

17,000

9,600

155

2.4

0.91

0.02

1.12

0.48

--

0.90

0.00

0.15

0.03

splt-lone

4/93

3/94

21,000

9,700

122

5.2

0.58

0.05

0.13

0.74

0.34

0.37

0.02

--

0.30

acfb-lime

3/93

3/94

5,500

3,500

4.9

0.48

0.09

0.01

0.08

0.03

--

0.04

0.00

0.00

0.00

acfb-lime

7/93

7/94

5,500

3,500

8.6

0.10

0.16

0.00

0.05

1.07

--

0.00

0.07

0.00

0.00

trin-chamb

1/94

1/95

28,000

12,000

1,369

7.1

4.95

0.06

9.94

0.07

--

5.30

0.03

0.00

0.00

ccpt-crab.rl

4/93

4/94

2,700

2,600

12

2.8

0.47

0.11

0.48

--

0.32

0.11

0.09

0.22

0.01

usnk-rock

4/93

4/94

8,000

3,400

3.3

0.22

0.04

0.01

0.74

0.00

0.01

0.05

0.00

--

0.00

ccpt-palouse

3/93

3/94

76,000

11,000

57

3.8

0.07

0.04

--

--

0.00

0.01

0.00

--

0.00

redn-turtle

3/93

3/94

16,000

3,700

0.7

0.49

0.00

0.01

--

0.01

0.00

0.01

0.00

0.00

0.06

usnk-teton

5/93

5/94

22,000

17,000

7.6

0.95

0.03

0.01

--

--

0.02

0.00

0.00

--

0.00

gafl-tucsa

3/93

3/94

15,000

7,600

5.1

0.83

0.03

0.01

0.08

0.00

--

0.15

0.00

0.05

0.01

gafl-tucsa

1/94

1/95

15,000

7,600

15.6

0.29

0.11

0.00

0.04

0.14

--

0.22

0.00

0.03

0.00

albe-devils

3/93

2/94

300

230

1.9

0.04

0.65

0.02

--

--

--

--

--

--

--

AGRICULTURAL BASINSCONTINUED

ccpt-crab.m

4/93

4/94

3,500

1,600

1.1

0.06

0.03

0.00

--

--

0.00

--

--

--

--

ccpt-el68

4/93

4/94

2,900

3,000

59

46

2.05

1.57

--

--

0.42

0.36

0.61

--

1.70

redn-snake

5/93

5/94

5,800

1,900

2.0

1.3

0.03

0.07

0.33

0.06

0.01

0.05

0.00

--

0.34

redn-wildr

3/93

3/94

21,000

2,900

41

0.00

0.19

0.00

1.14

0.50

0.01

0.02

0.03

--

0.00

acfb-aycocks

3/93

3/94

11,000

7,000

2.6

0.09

0.02

0.00

0.00

0.00

--

0.00

0.00

0.00

0.00

will-pudding

4/93

4/94

39,000

11,000

284

37.6

0.73

0.33

4.65

--

0.07

0.65

0.01

0.01

--

will-zollner

4/93

4/94

1,600

450

21.7

6.3

1.36

1.41

6.91

--

0.09

1.39

--

--

--

sanj-merced

1/93

1/94

15,000

28,000

55

37.9

0.38

0.14

0.14

0.00

0.98

0.45

0.03

0.91

0.17

sanj-orest

4/92

4/93

600

1,300

14

7.2

2.27

0.54

--

--

0.39

--

--

--

--

sanj-orest

12/92

11/93

600

1,300

18

59.2

3.06

4.50

--

--

0.32

--

--

--

--

ozrk-dous

2/94

10/94

150

--

0.71

1.2

0.47

--

--

--

--

--

--

--

--

ozrk-yocum

2/94

11/94

--

--

0.26

0.01

--

--

--

--

--

--

--

--

--

                               

INTEGRATOR BASINS

hdsn-moh

3/94

3/95

68,000

29,000

375

9.8

0.56

0.03

0.82

0.20

0.00

0.74

0.00

0.00

0.00

poto-shen

3/93

3/94

100,000

43,000

733

0.0

0.73

0.00

0.93

0.62

0.00

0.80

0.21

0.00

0.00

albe-tar

3/93

3/94

110,000

76,000

87

8.7

0.08

0.01

0.12

0.00

--

0.12

0.00

0.07

0.00

whit-white

5/92

5/93

2,400,000

140,000

18,266

218

0.75

0.15

1.05

0.53

0.02

0.85

0.05

0.32

0.09

whit-white

3/93

3/94

2,400,000

140,000

28,979

198

1.20

0.14

1.75

1.24

0.02

1.10

0.02

0.18

0.08

whit-white

4/94

3/95

2,400,000

140,000

25,356

65

1.05

0.05

1.61

0.68

0.01

1.19

0.02

0.00

0.00

redn-rr.fargo

4/94

3/95

620,000

64,000

533

1.9

0.09

0.00

0.37

0.25

0.15

0.06

0.01

0.00

0.07

redn-rr.em

4/93

4/94

1,800,000

330,000

1,439

185

0.08

0.06

1.03

0.42

0.03

0.10

0.00

0.00

0.45

cnbr-platte

4/93

3/94

4,200,000

850,000

26,533

422

0.63

0.05

0.98

0.98

0.01

0.35

0.02

0.09

0.25

sanj-sanj

1/93

12/93

200,000

390,000

475

512

0.24

0.13

0.36

0.32

0.16

0.43

0.02

0.17

0.11

                               
           

median

0.52

0.04

0.83

0.25

0.02

0.36

0.02

0.05

0.02

           

mean

0.76

0.25

1.29

0.57

0.11

0.68

0.04

0.11

0.22



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