APPENDIX E
The graphical presentation of water quality
monitoring
Mai Po WQM Result
Location: Sluice Gate 7
Date Time
Weather
Condition
Water
Depth
Temper
ature
(
o
C)
pH
Salinity
(ppt)
DO
(mg/L)
DO (%)
Turbidit
y (NTU)
SS
(mg/L)
O&G
(mg/L)
1.3 32.1 7.84 16.2 5.73 85.8 19.2 16 <5
1.4 32.1 7.83 16.2 5.69 85.2 19.5 14 <5
1.4 31.2 7.48 5.7 4.41 61.4 30.3 11 <5
1.4 31.2 7.49 5.8 4.38 61.0 30.4 21 <5
1.3 31.2 7.25 4.6 5.03 69.5 12.7 10 <5
1.3 31.2 7.24 4.9 5.11 70.9 12.6 7.9 <5
1.2 31.3 7.75 16.3 5.73 84.4 19.6 16 <5
1.2 31.3 7.76 16.3 5.72 83.9 19.7 14 <5
1.4 30 7.73 16.1 5.71 82.5 19.5 40 29
1.3 30 7.73 16.1 5.69 82.2 19.1 39 23
1.2 31.2 7.94 15.9 5.31 78.2 9.59 53 <5
1.3 31.1 7.94 15.8 5.27 77.4 9.51 72 <5
1.4 27.3 7.65 6.7 5.16 67.6 28.9 130 <5
1.4 27.4 7.61 6.4 5.14 67.3 29.5 168 <5
1.2 24.3 6.52 4.2 3.88 47.4 211 158 8.9
1.2 24.4 6.52 4.2 3.84 46.9 213 162 8.8
1.0 30.0 6.90 4.0 4.96 66.5 16.0 28 <5
1.0 29.9 6.89 4.0 4.91 65.8 15.9 21 <5
0.8 34.1 7.04 3.7 5.03 72.4 73.3 50 8.8
0.9 34.1 7.05 3.7 5.06 72.8 73.4 55 8.6
1.3 27.8 7.96 16.1 5.32 74.1 9.61 13 <5
1.3 27.0 7.98 16.2 5.35 73.5 9.62 16 <5
1.0 31.9 7.6 3.1 6.45 89.5 11.1 12 <5
1.0 31.9 7.62 3.2 6.40 88.9 11.3 12 <5
1.0 31.2 7.43 4.2 5.98 82.6 52.7 40 <5
1.0 31.3 7.44 4.3 5.95 82.2 52.8 43 <5
0.8 35 6.92 3.8 2.13 30.9 79.6 27 <5
0.8 35 6.94 3.8 2.15 31.2 79.7 66 <5
28/6/2023
12:00
Cloudy
30/6/2023
13:30
Cloudy
24/6/2023
12:30
Fine
26/6/2023
15:05
Cloudy
19/6/2023
10:50
Cloudy
21/6/2023
10:30
Fine
15/6/2023
15:00
Rain
17/6/2023
12:20
Rain
10/6/2023
13:00
Fine
13/6/2023
13:00
Fine
6/6/2023
15:30
Rain
8/6/2023
15:40
Fine
1/6/2023
14:00
Fine
3/6/2023
8:50
Fine
Location: Sluice Gate 7
0
5
10
15
20
25
30
35
40
1/6/2023
2/6/2023
3/6/2023
4/6/2023
5/6/2023
6/6/2023
7/6/2023
8/6/2023
9/6/2023
10/6/2023
11/6/2023
12/6/2023
13/6/2023
14/6/2023
15/6/2023
16/6/2023
17/6/2023
18/6/2023
19/6/2023
20/6/2023
21/6/2023
22/6/2023
23/6/2023
24/6/2023
25/6/2023
26/6/2023
27/6/2023
28/6/2023
29/6/2023
30/6/2023
Concentration,
℃
Temperature (℃)
Temperature (oC)
5
5.5
6
6.5
7
7.5
8
8.5
1/6/2023
2/6/2023
3/6/2023
4/6/2023
5/6/2023
6/6/2023
7/6/2023
8/6/2023
9/6/2023
10/6/2023
11/6/2023
12/6/2023
13/6/2023
14/6/2023
15/6/2023
16/6/2023
17/6/2023
18/6/2023
19/6/2023
20/6/2023
21/6/2023
22/6/2023
23/6/2023
24/6/2023
25/6/2023
26/6/2023
27/6/2023
28/6/2023
29/6/2023
30/6/2023
Concentration, pH
pH
pH
0
2
4
6
8
10
12
14
16
18
1/6/2023
2/6/2023
3/6/2023
4/6/2023
5/6/2023
6/6/2023
7/6/2023
8/6/2023
9/6/2023
10/6/2023
11/6/2023
12/6/2023
13/6/2023
14/6/2023
15/6/2023
16/6/2023
17/6/2023
18/6/2023
19/6/2023
20/6/2023
21/6/2023
22/6/2023
23/6/2023
24/6/2023
25/6/2023
26/6/2023
27/6/2023
28/6/2023
29/6/2023
30/6/2023
Concentration, ppt
Salinity (ppt)
Salinity (ppt)
1
2
3
4
5
6
7
8
9
1/6/2023
2/6/2023
3/6/2023
4/6/2023
5/6/2023
6/6/2023
7/6/2023
8/6/2023
9/6/2023
10/6/2023
11/6/2023
12/6/2023
13/6/2023
14/6/2023
15/6/2023
16/6/2023
17/6/2023
18/6/2023
19/6/2023
20/6/2023
21/6/2023
22/6/2023
23/6/2023
24/6/2023
25/6/2023
26/6/2023
27/6/2023
28/6/2023
29/6/2023
30/6/2023
Concentration,
mg/L
DO (mg/L)
DO (mg/L)
Action Levels
Limit Levels
0
20
40
60
80
100
1/6/2023
2/6/2023
3/6/2023
4/6/2023
5/6/2023
6/6/2023
7/6/2023
8/6/2023
9/6/2023
10/6/2023
11/6/2023
12/6/2023
13/6/2023
14/6/2023
15/6/2023
16/6/2023
17/6/2023
18/6/2023
19/6/2023
20/6/2023
21/6/2023
22/6/2023
23/6/2023
24/6/2023
25/6/2023
26/6/2023
27/6/2023
28/6/2023
29/6/2023
30/6/2023
Concentration, %
DO (%)
DO (%)
0.0
50.0
100.0
150.0
200.0
250.0
1/6/2023
2/6/2023
3/6/2023
4/6/2023
5/6/2023
6/6/2023
7/6/2023
8/6/2023
9/6/2023
10/6/2023
11/6/2023
12/6/2023
13/6/2023
14/6/2023
15/6/2023
16/6/2023
17/6/2023
18/6/2023
19/6/2023
20/6/2023
21/6/2023
22/6/2023
23/6/2023
24/6/2023
25/6/2023
26/6/2023
27/6/2023
28/6/2023
29/6/2023
30/6/2023
Concentration, NTU
Turbidity (NTU)
Turbidity (NTU)
Action Levels
Limit Levels
0
20
40
60
80
100
120
140
160
180
1/6/2023
2/6/2023
3/6/2023
4/6/2023
5/6/2023
6/6/2023
7/6/2023
8/6/2023
9/6/2023
10/6/2023
11/6/2023
12/6/2023
13/6/2023
14/6/2023
15/6/2023
16/6/2023
17/6/2023
18/6/2023
19/6/2023
20/6/2023
21/6/2023
22/6/2023
23/6/2023
24/6/2023
25/6/2023
26/6/2023
27/6/2023
28/6/2023
29/6/2023
30/6/2023
Concentration, mg/L
SS (mg/L)
SS (mg/L)
Action Levels
Limit Levels
0
5
10
15
20
25
30
35
1/6/2023
2/6/2023
3/6/2023
4/6/2023
5/6/2023
6/6/2023
7/6/2023
8/6/2023
9/6/2023
10/6/2023
11/6/2023
12/6/2023
13/6/2023
14/6/2023
15/6/2023
16/6/2023
17/6/2023
18/6/2023
19/6/2023
20/6/2023
21/6/2023
22/6/2023
23/6/2023
24/6/2023
25/6/2023
26/6/2023
27/6/2023
28/6/2023
29/6/2023
30/6/2023
Concentration, mg/L
O&G (mg/L
O&G (mg/L)
Mai Po WQM Result
Location: Sluice Gate 19
Date Time
Weather
Condition
Water
Depth
Temper
ature
(
o
C)
pH
Salinity
(ppt)
DO
(mg/L)
DO (%)
Turbidit
y (NTU)
SS
(mg/L)
O&G
(mg/L)
1.5 32.3 7.91 15.3 4.31 64.4 24.8 16 6.0
1.4 32.3 7.88 15.4 4.28 64.0 24.8 18 5.1
1.2 31.5 7.60 6.10 2.57 36.4 35.4 46 <5
1.2 31.4 7.63 6.10 2.59 36.7 35.7 40 <5
1.2 31.3 7.11 5.03 4.79 66.6 36.9 26 <5
1.2 31.3 7.12 5.08 4.83 67.2 36.4 24 <5
1.2 30.1 7.89 15.5 4.26 61.5 24.9 13 <5
1.3 30.1 7.93 15.6 4.29 61.9 24.9 13 <5
1.2 30.0 7.88 15.3 4.31 62.0 24.8 25 5.7
1.3 30.0 7.85 15.4 4.32 62.2 24.6 28 5.2
1.3 32.1 8.45 14.4 7.81 104.0 86.9 7.5 <5
1.1 32.0 8.31 14.2 7.82 103.8 86.4 3.6 <5
1.2 28.1 7.69 6.38 3.91 51.9 43.2 29 <5
1.2 28.1 7.72 6.35 3.96 52.5 43.8 40 <5
1.3 24.9 7.18 4.50 3.52 43.6 114 46 <5
1.4 25 7.19 4.50 3.49 43.2 115 58 <5
1.0 28.2 7.00 3.84 2.78 36.4 19.2 26 <5
0.8 28.2 7.01 3.83 2.79 36.6 19.1 26 <5
0.8 31.3 7.15 3.10 2.73 37.6 75.9 42 <5
0.8 31.2 7.17 3.10 2.71 37.3 75.8 57 <5
1.1 27.9 8.51 14.6 7.92 110 86.9 44 <5
1.3 27.0 8.44 14.4 7.91 108 86.4 31 <5
0.9 32.7 6.88 4.43 3.77 53.4 14.9 21 <5
0.9 32.7 6.89 4.44 3.73 52.8 14.8 24 <5
0.9 31.9 7.06 4.58 4.21 58.9 41.0 30 <5
0.9 32 7.08 4.6 4.19 58.6 41.1 30 <5
0.9 34.4 7.12 4.6 2.21 32.4 41.5 44 <5
0.9 34.3 7.14 4.6 2.19 32.1 41.6 21 <5
28/6/2023
12:20
Cloudy
30/6/2023
13:50
Cloudy
24/6/2023
13:00
Fine
26/6/2023
15:25
Cloudy
19/6/2023
11:14
Cloudy
21/6/2023
10:45
Fine
15/6/2023
15:30
Rain
17/6/2023
12:50
Rain
10/6/2023
13:30
Fine
13/6/2023
13:30
Fine
6/6/2023
16:00
Rain
8/6/2023
16:30
Fine
1/6/2023
14:30
Fine
3/6/2023
9:15
Fine
Location: Sluice Gate 19
0
5
10
15
20
25
30
35
40
1/6/2023
2/6/2023
3/6/2023
4/6/2023
5/6/2023
6/6/2023
7/6/2023
8/6/2023
9/6/2023
10/6/2023
11/6/2023
12/6/2023
13/6/2023
14/6/2023
15/6/2023
16/6/2023
17/6/2023
18/6/2023
19/6/2023
20/6/2023
21/6/2023
22/6/2023
23/6/2023
24/6/2023
25/6/2023
26/6/2023
27/6/2023
28/6/2023
29/6/2023
30/6/2023
Concentration,
℃
Temperature (℃)
Temperature (oC)
5
5.5
6
6.5
7
7.5
8
8.5
9
1/6/2023
2/6/2023
3/6/2023
4/6/2023
5/6/2023
6/6/2023
7/6/2023
8/6/2023
9/6/2023
10/6/2023
11/6/2023
12/6/2023
13/6/2023
14/6/2023
15/6/2023
16/6/2023
17/6/2023
18/6/2023
19/6/2023
20/6/2023
21/6/2023
22/6/2023
23/6/2023
24/6/2023
25/6/2023
26/6/2023
27/6/2023
28/6/2023
29/6/2023
30/6/2023
Concentration, pH
pH
pH
0
2
4
6
8
10
12
14
16
18
1/6/2023
2/6/2023
3/6/2023
4/6/2023
5/6/2023
6/6/2023
7/6/2023
8/6/2023
9/6/2023
10/6/2023
11/6/2023
12/6/2023
13/6/2023
14/6/2023
15/6/2023
16/6/2023
17/6/2023
18/6/2023
19/6/2023
20/6/2023
21/6/2023
22/6/2023
23/6/2023
24/6/2023
25/6/2023
26/6/2023
27/6/2023
28/6/2023
29/6/2023
30/6/2023
Concentration, ppt
Salinity (ppt)
Salinity (ppt)
1
2
3
4
5
6
7
8
9
1/6/2023
2/6/2023
3/6/2023
4/6/2023
5/6/2023
6/6/2023
7/6/2023
8/6/2023
9/6/2023
10/6/2023
11/6/2023
12/6/2023
13/6/2023
14/6/2023
15/6/2023
16/6/2023
17/6/2023
18/6/2023
19/6/2023
20/6/2023
21/6/2023
22/6/2023
23/6/2023
24/6/2023
25/6/2023
26/6/2023
27/6/2023
28/6/2023
29/6/2023
30/6/2023
Concentration,
mg/L
DO (mg/L)
DO (mg/L)
Action Levels
Limit Levels
0
20
40
60
80
100
120
1/6/2023
2/6/2023
3/6/2023
4/6/2023
5/6/2023
6/6/2023
7/6/2023
8/6/2023
9/6/2023
10/6/2023
11/6/2023
12/6/2023
13/6/2023
14/6/2023
15/6/2023
16/6/2023
17/6/2023
18/6/2023
19/6/2023
20/6/2023
21/6/2023
22/6/2023
23/6/2023
24/6/2023
25/6/2023
26/6/2023
27/6/2023
28/6/2023
29/6/2023
30/6/2023
Concentration, %
DO (%)
DO (%)
10.0
60.0
110.0
160.0
1/6/2023
2/6/2023
3/6/2023
4/6/2023
5/6/2023
6/6/2023
7/6/2023
8/6/2023
9/6/2023
10/6/2023
11/6/2023
12/6/2023
13/6/2023
14/6/2023
15/6/2023
16/6/2023
17/6/2023
18/6/2023
19/6/2023
20/6/2023
21/6/2023
22/6/2023
23/6/2023
24/6/2023
25/6/2023
26/6/2023
27/6/2023
28/6/2023
29/6/2023
30/6/2023
Concentration, NTU
Turbidity (NTU)
Turbidity (NTU)
Action Levels
Limit Levels
0
50
100
150
1/6/2023
2/6/2023
3/6/2023
4/6/2023
5/6/2023
6/6/2023
7/6/2023
8/6/2023
9/6/2023
10/6/2023
11/6/2023
12/6/2023
13/6/2023
14/6/2023
15/6/2023
16/6/2023
17/6/2023
18/6/2023
19/6/2023
20/6/2023
21/6/2023
22/6/2023
23/6/2023
24/6/2023
25/6/2023
26/6/2023
27/6/2023
28/6/2023
29/6/2023
30/6/2023
Concentration, mg/L
SS (mg/L)
SS (mg/L)
Action Levels
Limit Levels
0
5
10
15
20
25
30
35
1/6/2023
2/6/2023
3/6/2023
4/6/2023
5/6/2023
6/6/2023
7/6/2023
8/6/2023
9/6/2023
10/6/2023
11/6/2023
12/6/2023
13/6/2023
14/6/2023
15/6/2023
16/6/2023
17/6/2023
18/6/2023
19/6/2023
20/6/2023
21/6/2023
22/6/2023
23/6/2023
24/6/2023
25/6/2023
26/6/2023
27/6/2023
28/6/2023
29/6/2023
30/6/2023
Concentration, mg/L
O&G (mg/L)
O&G (mg/L)
