2019 I-95 thru I-109 Water Quality

Table 1-95. Hydrographic parameters measured at Broomfield Creek during 29 May
2019 benthic ponar grab and sweep sampling.
Ponar Sweep
Parameter Upstream Downstream I Upstream Downstream
Near surface
Temperature (°C)
27.2
27.9
27.2
27.9
Dissolved oxygen (%)
40.6
56.3
40.6
56.3
Dissolved oxygen (mg/L)
3.21
4.32
3.21
4.32
Specific conductivity (mS)
2.40
3.06
2.40
3.06
Conductivity (mS)
2.51
4.18
2.51
4.18
Salinity (psu)
1.23
2.07
1.23
2.07
pH
7.00
6.93
7.00
6.93
Secchi depth (inches)
12.50
16.00
12.50
16.00
Near bottom
Temperature (°C)
27.0
27.5
27.0
27.5
Dissolved oxygen (%)
26.5
16.2
26.5
16.2
Dissolved oxygen (mg/L)
2.05
1.27
2.05
1.27
Specific conductivity (mS)
2.51
4.30
2.51
4.30
Conductivity (mS)
2.61
4.50
2.61
4.50
Salinity (psu)
1.29
2.27
1.29
2.27
pH
6.90
6.69
6.90
6.69
1-105

Table 1-96. Hydrographic parameters measured at SCUT during 30 May 2019
benthic ponar grab and sweep sampling upstream and 29 May 2019 benthic ponar
grab and sweep sampling downstream.
Ponar Sweep
Parameter Upstream Downstream I Upstream Downstream
Near surface
Temperature (°C)
25.7
30.3
25.7
30.3
Dissolved oxygen (%)
28.4
70.9
28.4
70.9
Dissolved oxygen (mg/L)
2.28
5.22
2.28
5.22
Specific conductivity (mS)
2.92
4.59
2.92
4.59
Conductivity (mS)
2.96
5.06
2.96
5.06
Salinity (psu)
1.51
2.44
1.51
2.44
pH
7.33
7.04
7.33
7.04
Secchi depth (inches)
17.00
20.00
17.00
20.00
Near bottom
Temperature (°C)
25.7
27.9
25.7
27.9
Dissolved oxygen (%)
29.1
33.5
29.1
33.5
Dissolved oxygen (mg/L)
2.32
2.60
2.32
2.60
Specific conductivity (mS)
2.91
4.89
2.91
4.89
Conductivity (mS)
2.95
5.17
2.95
5.17
Salinity (psu)
1.51
2.61
1.51
2.61
pH
7.32
6.82
7.32
6.82
1-106

Table 1-97. Hydrographic parameters measured at Jacks Creek during 23 May 2019
benthic ponar grab and sweep sampling.
Ponar Sweep
Parameter Upstream Downstream I Upstream Downstream
Near surface
Temperature (°C)
24.1
25.5
24.1
25.5
Dissolved oxygen (%)
21.9
33.8
21.9
33.8
Dissolved oxygen (mg/L)
1.81
2.66
1.81
2.66
Specific conductivity (mS)
5.99
6.26
5.99
6.26
Conductivity (mS)
5.89
6.33
5.89
6.33
Salinity (psu)
3.25
3.40
3.25
3.40
pH
6.85
0.95
6.85
0.95
Secchi depth (inches)
24.00
21.00
24.00
21.00
Near bottom
Temperature (°C)
23.3
25.5
23.3
25.5
Dissolved oxygen (%)
15.9
32.3
15.9
32.3
Dissolved oxygen (mg/L)
1.32
2.58
1.32
2.58
Specific conductivity (mS)
5.93
6.26
5.93
6.26
Conductivity (mS)
5.73
6.32
5.73
6.32
Salinity (psu)
3.22
3.40
3.22
3.40
pH
6.79
6.90
6.79
6.90
1-107

Table 1-98. Hydrographic parameters measured at Little Creek during 16 May 2019
benthic ponar grab and sweep sampling upstream and 15 May 2019 benthic ponar
grab and sweep sampling downstream.
Ponar Sweep
Parameter Upstream Downstream I Upstream Downstream
Near surface
Temperature (°C)
18.0
25.7
18.0
25.7
Dissolved oxygen (%)
21.0
115.6
21.0
115.6
Dissolved oxygen (mg/L)
1.98
9.26
1.98
9.26
Specific conductivity (mS)
2.40
5.79
2.40
5.79
Conductivity (mS)
2.08
5.86
2.08
5.86
Salinity (psu)
1.24
3.13
1.24
3.13
pH
7.06
8.43
7.06
8.43
Secchi depth (inches)
>20.00
28.00
>20.00
28.00
Near bottom
Temperature (°C)
19.0
23.1
19.0
23.1
Dissolved oxygen (%)
6.0
100.0
6.0
100.0
Dissolved oxygen (mg/L)
0.54
8.30
0.54
8.30
Specific conductivity (mS)
3.03
5.69
3.03
5.69
Conductivity (mS)
2.68
5.51
2.68
5.51
Salinity (psu)
1.59
3.08
1.59
3.08
pH
6.83
8.13
6.83
8.13
1-108

Table 1-99. Hydrographic parameters measured at Jacobs Creek during 15 May
2019 benthic ponar grab and sweep sampling.
Ponar I Sweep
Parameter I Upstream I Downstream I Upstream I Downstream
Near surface
Temperature (°C)
19.6
22.3
19.6
22.3
Dissolved oxygen (%)
31.9
65.3
31.9
65.3
Dissolved oxygen (mg/L)
2.87
5.55
2.87
5.55
Specific conductivity (mS)
5.58
5.98
5.58
5.98
Conductivity (mS)
5.01
5.67
5.01
5.67
Salinity (psu)
3.03
3.25
3.03
3.25
pH
6.53
7.09
6.53
7.09
Secchi depth (inches)
>36.00
20.00
>36.00
20.00
Near bottom
Temperature (°C)
19.6
21.9
19.6
21.9
Dissolved oxygen (%)
30.9
56.3
30.9
56.3
Dissolved oxygen (mg/L)
2.78
4.83
2.78
4.83
Specific conductivity (mS)
5.59
5.94
5.59
5.94
Conductivity (mS)
5.01
5.59
5.01
5.59
Salinity (psu)
3.03
3.23
3.03
3.23
pH
6.58
7.04
6.58
7.04
1-109

Table 1-100. Hydrographic parameters measured at PA2 during 15 May 2019
benthic ponar grab sampling and benthic sweep sampling.
Ponar Sweep
Parameter Upstream Downstream Upstream Downstream
Near surface
Temperature (°C)
23.0
22.0
23.0
22.0
Dissolved oxygen (%)
78.4
70.2
78.4
70.2
Dissolved oxygen (mg/L)
6.65
5.93
6.65
5.93
Specific conductivity (mS)
5.82
5.93
5.82
5.93
Conductivity (mS)
5.59
5.59
5.59
5.59
Salinity (psu)
3.15
3.23
3.15
3.23
pH
7.11
7.16
7.11
7.16
Secchi depth (inches)
32.00
28.00
32.00
28.00
Near bottom
Temperature (°C)
22.1
21.9
22.1
21.9
Dissolved oxygen (%)
72.6
62.7
72.6
62.7
Dissolved oxygen (mg/L)
6.29
5.36
6.29
5.36
Specific conductivity (mS)
5.83
5.93
5.83
5.93
Conductivity (mS)
5.52
5.58
5.52
5.58
Salinity (psu)
3.17
3.23
3.17
3.23
pH
7.10
7.12
7.10
7.12
1-110

Table 1-101. Hydrographic parameters measured at Drinkwater Creek during 15
May 2019 benthic ponar grab and sweep sampling.
Ponar Sweep
Parameter Upstream Downstream I Upstream Downstream
Near surface
Temperature (°C)
22.5
24.2
22.5
24.2
Dissolved oxygen (%)
67.7
99.0
67.7
99.0
Dissolved oxygen (mg/L)
5.70
8.31
5.70
8.31
Specific conductivity (mS)
5.57
5.94
5.57
5.94
Conductivity (mS)
5.30
5.84
5.30
5.84
Salinity (psu)
3.01
3.22
3.01
3.22
pH
6.88
7.64
6.88
7.64
Secchi depth (inches)
29.00
20.00
29.00
20.00
Near bottom
Temperature (°C)
22.2
22.4
22.2
22.4
Dissolved oxygen (%)
63.4
53.1
63.4
53.1
Dissolved oxygen (mg/L)
5.41
4.56
5.41
4.56
Specific conductivity (mS)
5.54
5.96
5.54
5.96
Conductivity (mS)
5.24
5.66
5.24
5.66
Salinity (psu)
3.00
3.24
3.00
3.24
pH
6.83
7.29
6.83
7.29

Table 1-102. Hydrographic parameters measured at Long Creek during 28 May
2019 benthic ponar grab and sweep sampling.
Ponar Sweep
Parameter Upstream Downstream I Upstream Downstream
Near surface
Temperature (°C)
29.8
31.6
29.8
31.6
Dissolved oxygen (%)
84.8
93.4
84.8
93.4
Dissolved oxygen (mg/L)
6.27
6.92
6.27
6.92
Specific conductivity (mS)
8.62
8.50
8.62
8.50
Conductivity (mS)
9.41
9.57
9.41
9.57
Salinity (psu)
4.77
4.68
4.77
4.68
pH
7.70
8.01
7.70
8.01
Secchi depth (inches)
21.00
26.75
21.00
26.75
Near bottom
Temperature (°C)
28.9
27.6
28.9
27.6
Dissolved oxygen (%)
61.2
24.1
61.2
24.1
Dissolved oxygen (mg/L)
4.55
1.82
4.55
1.82
Specific conductivity (mS)
8.90
9.23
8.90
9.23
Conductivity (mS)
9.56
9.70
9.56
9.70
Salinity (psu)
4.94
5.14
4.94
5.14
pH
7.46
7.24
7.46
7.24
1-112

Table 1-103. Hydrographic parameters measured at Tooley Creek during 29 May
2019 benthic ponar grab and sweep sampling.
Ponar Sweep
Parameter Upstream Downstream I Upstream Downstream
Near surface
Temperature (°C)
30.6
29.6
30.6
29.6
Dissolved oxygen (%)
91.7
86.2
91.7
86.2
Dissolved oxygen (mg/L)
6.72
6.37
6.72
6.37
Specific conductivity (mS)
8.32
8.32
8.32
8.32
Conductivity (mS)
9.12
9.07
9.12
9.07
Salinity (psu)
4.59
4.59
4.59
4.59
pH
7.62
7.66
7.62
7.66
Secchi depth (inches)
26.00
22.00
26.00
22.00
Near bottom
Temperature (°C)
28.8
27.9
28.8
27.9
Dissolved oxygen (%)
72.3
50.0
72.3
50.0
Dissolved oxygen (mg/L)
5.65
3.87
5.65
3.87
Specific conductivity (mS)
8.25
8.38
8.25
8.38
Conductivity (mS)
8.86
8.84
8.86
8.84
Salinity (psu)
4.55
4.64
4.55
4.64
pH
7.52
7.29
7.52
7.29
1-113

Table 1-104. Hydrographic parameters measured at Muddy Creek during 28 May
2019 benthic ponar grab and sweep sampling.
Ponar Sweep
Parameter Upstream Downstream I Upstream Downstream
Near surface
Temperature (°C)
28.9
30.1
28.9
30.1
Dissolved oxygen (%)
35.9
85.5
35.9
85.5
Dissolved oxygen (mg/L)
2.69
6.37
2.69
6.37
Specific conductivity (mS)
8.90
9.32
8.90
9.32
Conductivity (mS)
9.57
10.24
9.57
10.24
Salinity (psu)
4.94
5.17
4.94
5.17
pH
7.08
7.52
7.08
7.52
Secchi depth (inches)
20.00
14.50
20.00
14.50
Near bottom
Temperature (°C)
28.5
29.1
28.5
29.1
Dissolved oxygen (%)
15.0
61.7
15.0
61.7
Dissolved oxygen (mg/L)
6.31
4.61
6.31
4.61
Specific conductivity (mS)
9.00
9.45
9.00
9.45
Conductivity (mS)
9.61
10.18
9.61
10.18
Salinity (psu)
5.00
5.25
5.00
5.25
pH
6.99
7.39
6.99
7.39
1-114

Table 1-105. Hydrographic parameters measured at Huddles Cut during 9 May 2019
benthic ponar grab and sweep sampling.
Ponar I Sweep
Parameter I Upstream I Downstream I Upstream I Downstream
Near surface
Temperature (°C)
24.1
24.3
24.1
24.3
Dissolved oxygen (%)
58.4
61.4
58.4
61.4
Dissolved oxygen (mg/L)
4.93
5.06
4.93
5.06
Specific conductivity (mS)
4.87
4.82
4.87
4.82
Conductivity (mS)
4.79
4.76
4.79
4.76
Salinity (psu)
2.61
2.58
2.61
2.58
pH
7.32
7.09
7.32
7.09
Secchi depth (inches)
>18.00
>22.00
>18.00
>22.00
Near bottom
Temperature (°C)
24.1
24.3
24.1
24.3
Dissolved oxygen (%)
62.6
60.2
62.6
60.2
Dissolved oxygen (mg/L)
5.14
4.96
5.14
4.96
Specific conductivity (mS)
4.87
4.82
4.87
4.82
Conductivity (mS)
4.78
4.76
4.78
4.76
Salinity (psu)
2.61
2.58
2.61
2.58
pH
7.29
7.05
7.29
7.05
1-115

Table 1-106. Hydrographic parameters measured at Porter Creek during 21 May
2019 benthic ponar grab sampling and benthic sweep sampling.
Ponar Sweep
Parameter Upstream Downstream I Upstream Downstream
Near surface
Temperature (°C)
29.6
28.9
29.6
28.9
Dissolved oxygen (%)
84.5
104.0
84.5
104.0
Dissolved oxygen (mg/L)
6.29
7.89
6.29
7.89
Specific conductivity (mS)
4.04
5.08
4.04
5.08
Conductivity (mS)
4.40
5.47
4.40
5.47
Salinity (psu)
2.12
2.71
2.12
2.71
pH
7.12
7.85
7.12
7.85
Secchi depth (inches)
32.00
33.50
32.00
33.50
Near bottom
Temperature (°C)
29.1
25.4
29.1
25.4
Dissolved oxygen (%)
88.0
67.1
88.0
67.1
Dissolved oxygen (mg/L)
6.71
5.57
6.71
5.57
Specific conductivity (mS)
4.00
5.84
4.00
5.84
Conductivity (mS)
4.36
5.82
4.36
5.82
Salinity (psu)
2.10
3.80
2.10
3.80
pH
6.92
7.22
6.92
7.22
1-116

Table 1-107. Hydrographic parameters measured at DCUT11 during 1 May 2019
benthic ponar grab sampling and benthic sweep sampling.
Ponar Sweep
Parameter Upstream Downstream Upstream Downstream
Near surface
Temperature (°C)
26.9
23.8
26.9
23.8
Dissolved oxygen (%)
88.3
86.0
88.3
86.0
Dissolved oxygen (mg/L)
6.95
7.20
6.95
7.20
Specific conductivity (mS)
0.50
0.48
0.50
0.48
Conductivity (mS)
0.51
0.47
0.51
0.47
Salinity (psu)
0.24
0.24
0.24
0.24
pH
6.05
6.70
6.05
6.70
Secchi depth (inches)
>23.00
>28.00
>23.00
>28.00
Near bottom
Temperature (°C)
26.6
22.9
26.6
22.9
Dissolved oxygen (%)
73.0
63.8
73.0
63.8
Dissolved oxygen (mg/L)
5.92
5.56
5.92
5.56
Specific conductivity (mS)
0.53
0.50
0.53
0.50
Conductivity (mS)
0.54
0.48
0.54
0.48
Salinity (psu)
0.26
0.24
0.26
0.24
pH
5.94
6.57
5.94
6.57
1-117

Table 1-108. Hydrographic parameters measured at DCUT19 during 2 May 2019
benthic ponar grab and sweep sampling upstream and 1 May 2019 benthic ponar
grab and sweep sampling downstream.
Ponar Sweep
Parameter Upstream Downstream I Upstream Downstream
Near surface
Temperature (°C)
22.1
23.6
22.1
23.6
Dissolved oxygen (%)
14.1
88.1
14.1
88.1
Dissolved oxygen (mg/L)
1.22
7.46
1.22
7.46
Specific conductivity (mS)
1.66
1.38
1.66
1.38
Conductivity (mS)
1.66
1.34
1.66
1.34
Salinity (psu)
0.84
0.69
0.84
0.69
pH
6.33
7.21
6.33
7.21
Secchi depth (inches)
>10.00
>18.00
>10.00
>18.00
Near bottom
Temperature (°C)
22.1
22.8
22.1
22.8
Dissolved oxygen (%)
13.6
68.1
13.6
68.1
Dissolved oxygen (mg/L)
1.19
5.97
1.19
5.97
Specific conductivity (mS)
1.66
1.46
1.66
1.46
Conductivity (mS)
1.57
1.40
1.57
1.40
Salinity (psu)
0.84
0.74
0.84
0.74
pH
6.33
6.93
6.33
6.93
1-118

Table 1-109. Hydrographic parameters measured at Duck Creek during 21 May
2019 benthic ponar grab sampling and benthic sweep sampling.
Ponar I Sweep
Parameter Upstream I Downstream I Upstream I Downstream
Near surface
Temperature (°C)
29.6
27.5
29.6
27.5
Dissolved oxygen (%)
20.3
79.6
20.3
79.6
Dissolved oxygen (mg/L)
1.53
6.26
1.53
6.26
Specific conductivity (mS)
1.89
5.59
1.89
5.59
Conductivity (mS)
2.06
2.40
2.06
2.40
Salinity (psu)
0.95
1.17
0.95
1.17
pH
6.69
6.40
6.69
6.40
Secchi depth (inches)
>19.00
32.50
>19.00
32.50
Temperature (°C)
28.9
26.9
28.9
26.9
Dissolved oxygen (%)
14.2
65.3
14.2
65.3
Dissolved oxygen (mg/L)
1.09
5.22
1.09
5.22
Specific conductivity (mS)
1.89
2.15
1.89
2.15
Conductivity (mS)
2.03
2.19
2.03
2.19
Salinity (psu)
0.95
1.10
0.95
1.10
pH
6.71
6.54
6.71
6.54
1-119