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I
I LAKE ERIE TRIBUTARY LOADING STUDIES
| APPENDIX 2
| PESTICIDE LOADS IN LAKE ERIE TRIBUTARIES
• (1987 WATER YEAR)
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Submitted in Partial Fulfillment of
I Grant Number R005967-01
• Great Lakes National Program Office
U. S. Environmental Protection Agency, Region 5
Chicago, Illinois 60604
• Robert Beltran, Project Officer
• January 1989
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• Prepared by:
David B. Baker, Director
• Water Quality Laboratory
Heidelberg College
Tiffin, Ohio 44883
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Note: In this appendix, the pesticides loads for Lake Erie tributaries are presented in the
same format that was used in Appendix 2 of the 1988 report by Baker entitled Sediment,
Nutrient and Pesticide Transport in Selected Lower Great Lakes Tributaries (EPA-905/4-
88-001). The reader is referred to that document for details on the methods used to
calculate pesticide loads for each station.
List of Tables
The following tables present the pesticide loads and unit area loads for each station.
Table Station Page
1. Maumee 40
2. Sandusky 41
3. Raisin 42
4. Cuyahoga 43
5. Honey Creek 44
6. Rock Creek 45
7. Lost Creek 46
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Table 1: Pesticide loads for the Maumee River, USGS04193500,
during the time interval 8704150000 to 8708150000, a span of 122 days,
during which 40 pesticide samples were taken.
The time characterized by any pesticide sample was limited to 7 days.
The loads calculated in this manner are as follows:
Pesticide
Simazine
Carbofuran
Atrazine
Terbufos
Fonofos
Metribuzin
Alachlor
Linuron
Metolachlor
Cyanazine
Pendimet halin
1:1 PTC
D1A
DEA
Ethoprop
Trifluralin
Phorate
Propoxur
Aldicarb
The monitored time is 97.2361 days.
The monitored discharge is 377284 cfs-days, or 923.214 million cubic meters,
The total discharge during this time is 401727 cfs-days,
or 983.026 million cubic meters, and is based on the most complete
discharge record available in the computer. Due to differences in data and
calculation approach, this discharge may differ from the USGS discharge for
the same time period. The discharge record covers 121.125 days out of 122
with each flow measurement characterizing one day or less. 1 flow values
out of 149 were missing.
The observed loads correspond to the time and discharge monitored.
The extrapolated loads are calculated by multiplying the observed load
by the ratio of the total discharge to the monitored discharge.
The unit area load is the extrapolated load divided by the watershed
area and re-expressed as grams per hectare.
The accuracy of the load estimates is dependent on the frequency and
representativeness of the pesticide samples and the flow data.
Infrequent pesticide samples are more often the limiting factor than
is inadequate flow data.
Pesticide concentrations below detection limit are taken as 0.000 ug/L.
40
Observed
Load
kg
330.431
1107.04
4664.52
44.2636
368.569
730.14
1552.14
49.2537
3937.41
1113.6
76.3805
3.56784
42.2637
13.2938
219.693
38.172
222.32
42.0645
0
Extrapolated
Load
kg
351 .839
1178.76
4966.71
47.1312
392.447
777.443
1652.7
52.4447
4192.5
1185.75
81 .3289
3.79899
45.0019
14.155
233.926
40.6451
236.723
44.7897
0
Unit area
Load
g/ha
.214601
.718976
3.02941
.287473E-01
.23937
.474195
1.00805
.319882E-01
2.55718
.723239
.496059E-01
.231716E-02
. 27448 5E-01
.863374E-02
.142681
. 24791 1E-01
.144387
.273191E-01
0
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Table 2: Pesticide loads for the Sandusky River, USGS04198000,
during the time interval 8704150000 to 8708150000, a span of 122 days,
during which 65 pesticide samples were taken.
The time characterized by any pesticide sample was limited to 7 days.
The loads calculated in this manner are as follows:
Pesticide
Simazine
Carbofuran
Atrazine
Terbufos
Fonofos
Metribuzin
Alachlor
Linuron
Metolachlor
Cyanazine
Pendimethalin
EPTC
DIA
DEA
Ethoprop
Trifluralin
Phorate
Propoxur
Aldicarb
Observed
Load
kg
114.044
767.7
1077.16
0
68.2491
212.242
480.978
73.3624
1020.54
86.3519
23.5525
2.51089
2.49424
3.16955
24.2905
2.17676
1.23705
.516062
0
Extrapolated
Load
kg
117.452
790.639
1109.35
0
70.2884
218.584
495.35
75.5546
1051.03
88.9321
24.2562
2.58592
2.56876
3.26426
25.0163
2.24181
1.27401
.531482
0
Unit area
Load
g/ha
.362506
2.44024
3.42391
0
.216939
.67464
1.52886
.233193
3.24393
.274482
.748649E-01
.798J23E-02
.792S28E-02
.100749E-01
.772108E-01
.691915E-02
. 39321 3E-02
.164038E-02
0
The monitored time is J03.649 days.
The monitored discharge is 105851 cfs-days, or 259.017 million cubic meters.
The total discharge during this time is 109014 cfs-days,
or 266.756 million cubic meters, and is based on the most complete
discharge record available in the computer. Due to differences in data and
calculation approach, this discharge may differ from the USGS discharge for
the same time period. The discharge record covers 113.625 days out of 122
with each flow measurement characterizing one day or less. 0 flow values
out of 180 were missing.
The observed loads correspond to the time and discharge monitored.
The extrapolated loads are calculated by multiplying the observed load
by the ratio of the total discharge to the monitored discharge.
The unit area Joad is the extrapolated load divided by the watershed
area and re-expressed as grams per hectare.
The accuracy of the load estimates is dependent on the frequency and
representativeness of the pesticide samples and the flow data.
Infrequent pesticide samples are more often the limiting factor than
is inadequate flow data.
Pesticide concentrations below detection limit are taken as 0.000 ug/L.
41
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Table 3: Pesticide loads for the River Raisin, USGS04176500,
during the time interval 8704150000 to 8708150000, a span of 122 days,
during which 6 pesticide samples were taken.
The time characterized by any pesticide sample was limited to 7 days.
The loads calculated in this manner are as follows:
Pe s t i c i de
Simazine
Carbofuran
Atrazine
Terbufos
Fonofos
Metribuzin
Alachlor
Linuron
Metolachior
Cyanazine
Pendimethalin
EPTC
DIA
DEA
Ethoprop
Trifluralin
Phorate
Propoxur
Aldicarb
The monitored time is 40 days.
The monitored discharge is 8064.62 cfs-days, or 19.7341 million cubic meters,
The total discharge during this time is 31978 cfs-days,
or 78.2502 million cubic meters, and is based on the most complete
discharge record available in the computer. Due to differences in data and
calculation approach, this discharge may differ from the USGS discharge for
the same time period. The discharge record covers 101.63 days out of 122
with each flow measurement characterizing one day or less. 0 flow values
out of 102 were missing.
The observed loads correspond to the time and discharge monitored.
The extrapolated loads are calculated by multiplying the observed load
by the ratio of the total discharge to the monitored discharge.
The unit area load is the extrapolated load divided by the watershed
area and re-expressed as grams per hectare.
The accuracy of the load estimates is dependent on the frequency and
representativeness of the pesticide samples and the flow data.
Infrequent pesticide samples are more often the limiting factor than
is inadequate flow data.
Pesticide concentrations below detection limit are taken as 0.000 ug/L.
42
Observed
Load
kg
2.13483
9.45032
65.1303
0
3.39069
10.4976
22.2597
0
22.4832
10.0)92
3.84666
0
0
.103388
1 .45543
.125054E-01
1.55067
.100043E-01
0
Ext rapolated
Load
kg
8.46509
37.4726
258.256
0
13.4448
41.6254
88.2647
0
89.1508
39.7285
15.2529
0
0
.409958
5.77111
.495867E-01
6.14875
.396693E-01
0
Unit area
Load
g/ha
.313638E-01
.138839
.956859
0
.498142E-01
.154225
.327027
0
.33031
.147197
.056513
0
0
.151893E-02
.213824E-01
.183722E-03
. 22781 6E-01
.146978E-03
0
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T.itle 4: Pesticide loads for the Cuyahoga River, USGS04208000,
during the time interval 8704150000 to 8708150000, a spaa of 122 days,
during which 4 pesticide samples were taken.
The time characterized by any pesticide sample was limited to 7 days.
The loads calculated in this manner are as follows:
Pesticide
Simazine
Carbofuran
Atrazine
Terbufos
Fonofos
Metribuzin
Alachlor
Linuron
Metolachlor
Cyanazine
Pendimethalin
EPTC
DIA
DEA
Ethoprop
Trifluralin
Phorate
Propoxur
Aldicarb
The monitored time is 21 days.
The monitored discharge is 33675.6 cfs-days, or 82.4043 million cubic meters.
The total discharge during this time is 90317.8 cfs-days,
or 221.008 million cubic meters, and is based on the most complete
discharge record available in the computer. Due to differences in data and
calculation approach, this discharge may differ from the USGS discharge for
the same time period. The discharge record covers 118.748 days out of 122
with each flow measurement characterizing one day or less. 0 flow values
out of 157 were missing.
The observed loads correspond to the tine and discharge monitored.
The extrapolated loads are calculated by multiplying the observed load
by the ratio of the total discharge to the monitored discharge.
The unit area load is the extrapolated load divided by the watershed
area and re-expressed as grams per hectare.
The accuracy of the load estimates is dependent on the frequency and
representativeness of the pesticide samples and the flow data.
Infrequent pesticide samples are more often the limiting factor than
is inadequate flow data.
Pesticide concentrations below detection limit are taken as 0.000 ug/L.
43
Observed
Load
kg
10.673
10.3312
64.6018
0
7.53734
6.80883
12.4538
0
51.0571
2.05774
.407366
0
0
.581 951 Ii-01
.876423
0
0
0
0
Extrapolated
Load
kg
28.6248
27.7081
173.261
0
20.2151
18.2612
33.4009
0
136.935
5.51885
1.09255
0
0
.156079
2.35056
0
0
0
0
Unit area
Load
g/ha
.156334
.151328
.946267
0
.110405
.997336E-01
.182419
0
.747869
.301412E-01
.596697E-02
0
0
.852424E-03
.128376R-01
0
0
0
0
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Table 5: Pesticide loads for Honey Creek, USGS04197100,
during the time interval 8704150000 to 8708150000, a span of 122 days,
during which 102 pesticide samples were taken.
The time characterized by any pesticide sample was limited to 7 days.
The loads calculated in this manner are as follows:
Pesticide
Simazine
Carbofuran
Atrazine
Terbufos
Fonofos
Metribuzin
Alachlor
Linuron
Metolachlor
Cyanazine
Pendimethalin
EPTC
DIA
DEA
Ethoprop
Trifluralin
Phorate
Propoxur
Aldicarb
The monitored time is 102.875 days.
The monitored discharge is 7319.69 cfs-days, or 17.9113 million cubic meters,
The total discharge during this time is 6998.51 cfs-days,
or 17.1254 million cubic meters, and is based on the most complete
discharge record available in the computer. Due to differences in data and
calculation approach, this discharge may differ from the USGS discharge for
the same time period. The discharge record covers 114.25 days out of 122
with each flow measurement characterizing one day or less. 0 flow values
out of 162 were missing.
The observed loads correspond to the time and discharge monitored.
The extrapolated loads are calculated by multiplying the observed load
by the ratio of the total discharge to the monitored discharge.
The unit area load is the extrapolated load divided by the watershed
area and re-expressed as grams per hectare.
The accuracy of the load estimates is dependent on the frequency and
representativeness of the pesticide samples and the flow data.
Infrequent pesticide samples are more often the limiting factor than
is inadequate flow data.
Pesticide concentrations below detection limit are taken as 0.000 ug/L.
44
Observed
Load
kg
9.46856
11.0289
116.142
.141258E-01
7.45817
11 .2119
54.4497
7.68909
65.1481
14.9971
1.5841
.151202
.135681
.340906E-02
1 .48242
.272269
.217595
.016867
0
Extrapolated
Load
kg
9.05309
10.5449
111.046
.013506
7.13091
10.72
52.0605
7.3517
62.2895
14.339
1.51459
.144567
.129728
.325947E-02
1.41737
.260322
.208047
.161269E-01
0
Unit area
Load
g/ha
.234536
.273185
2.87683
.349896E-03
.184739
.277719
1.34872
.190459
1.61372
.371478
.392381E-01
.374526E-02
.336082E-02
.844423E-04
.367195E-01
. 67441 K-02
.538982E-02
.417795E-03
0
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Table 6: Pesticide loads for Rock Creek, USGS041 97170, '
during the time interval 8704150000 to 8708150000, a span of 122 days,
during which 63 pesticide samples were taken.
The time characterized by any pesticide sample was limited to 7 days.
The loads calculated in this manner are as follows:
Pesticide
Simazine
Carbofuran
Atrazine
Terbufos
Fonofos
Metribuzin
Alachlor
Linuron
Metolachlor
Cyanazine
Pendimethalin
EPTC
DIA
DEA
Ethoprop
Trifluralin
Phorate
Propoxur
Aldicarb
The monitored time is 106.311 days.
The monitored discharge is 97V.083 cfs-days, or 2.39582 million cubic meters.
The total discharge during this time is 1055.16 cfs-days,
or 2.58198 million cubic meters, and is based on the most complete
discharge record available in the computer. Due to differences in data and
calculation approach, this discharge may differ from the USGS discharge for
the same time period. The discharge record covers 115.875 days out of 122
with each flow measurement characterizing one day or less. 0 flow values
out of 177 were missing.
The observed loads correspond to the time and discharge monitored.
The extrapolated loads are calculated by multiplying the observed load
by the ratio of the total discharge to the monitored discharge.
The unit area load is the extrapolated load divided by the watershed
area and re-expressed as grams per hectare.
The accuracy of the load estimates is dependent on the frequency and
representativeness of the pesticide samples and the flow data.
Infrequent pesticide samples are more often the limiting factor than
is inadequate flow data.
Pesticide concentrations below detection limit are taken as 0.000 ug/L.
45
Observed
Load
kg
44.6823
.767647
7.27584
.016602
.676009
1 .22729
2.76978
.435409
7.51977
.576826
.19034
.109592
.1353251- -01
.367975E-01
.106515
. 232741 E-01
.977698E-01
.174452E-01
0
Extrapolated
Load
kg
48.1543
.827297
7.84121
.017892
.728539
1.32265
2.985
.469243
8.10409
.621648
.205131
.118107
.145841 E-01
.396568E-01
.114792
.250826E-01
.105367
.188008E-01
0
Unit area
Load
g/ha
5.37437
.923323E-01
.875135
.199688E-02
.813101E-01
.147617
.333148
.523708E-01
.904475
.693804E-01
.022894
.131816E-01
.162768E-02
.442598E-02
.128116E-01
.27994E-02
.117597E-01
.20983E-02
0
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Table 7: Pesticide loads for Lost Creek, USGS04185440,
during the time interval 8704150000 to 8708150000, a span of 122 days,
during which 86 pesticide samples were taken.
The time characterized by any pesticide sample was limited to 7 days.
The loads calculated in this manner are as follows:
Pesticide
Simazine
Carbofuran
Atrazine
Terbufos
Fonofos
MetribuzLn
Alachlor
Linuron
Metolachlor
Cyanazine
Pendimethalin
EPTC
UIA
l)EA
Ethoprop
Trifluralin
Phorate
Propoxur
Aldicarb
The monitored time is 104.358 days.
The monitored discharge is 344.607 cfs-days, or .843253 million cubic meters.
The total discharge during this time is 367.522 cfs-days,
or .899327 million cubic meters, and is based on the most complete
discharge record avaiJable in the computer. Due to differences in data and
calculation approach, this discharge may differ from the USGS discharge for
the same time period. The discharge record covers 121.681 days out of 122
with each flow measurement characterizing one day or less. 0 flow values
out of 215 were missing.
The observed loads correspond to the time and discharge monitored.
The extrapolated loads are calculated by multiplying the observed load
by the ratio of the total discharge to the monitored discharge.
The unit area load is the extrapolated load divided by the watershed
area and re-expressed as grams per hectare.
The accuracy of the load estimates is dependent on the frequency and
representativeness of the pesticide samples and the flow data.
Infrequent pesticide samples are more often the limiting factor than
is inadequate flow data.
Pesticide concentrations below detection limit are taken as 0.000 tig/L.
46
Observed
Load
kg
.194632
2.18214
7.96431
. 43451 1E-03
2.06286
.970862
3.71565
.399619
5.52499
3.26162
.162048
.218514E-02
.132899K-01
.785868E-01
.507588
.304382E-02
.022285
.111922E-02
0
Extrapolated
Load
kg
.207575
2.32725
8.49391
.463405E-03
2.20004
1.03542
3.96273
.426193
5.89239
3.4785
.172824
.233044E-02
.141736K-01
.838126E-01
.541341
.324622E-02
.237669E-01
.119364E-02
0
Unit area
Load
g/ha
.244205
2.73794
9.99284
.545182E-03
2.58828
1.21814
4.66203
.501403
6.93222
4.09236
.203323
.27417E-02
.166748K-01
. 986031 £-01
.636872
.381909E-02
.027961
.140429E-02
0
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U.S. Environmental Protection Agency
GLNPO Library Collection (PL-12J) _^
77 West Jackson Boulevard,
Chicago, II 60604-3590
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