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)
1.0 31.9 7.04 3.2 2.91 40.5 27.6 18 <5
1.0 31.9 7.05 3.2 2.95 41.0 27.7 14 <5
1.2 32.0 7.95 15.8 5.31 79.4 9.59 29 <5
1.3 32.1 7.93 15.7 5.27 78.6 8.50 78 <5
1.0 31.9 7.04 3.2 2.91 40.5 27.6 74 <5
1.0 31.9 7.05 3.2 2.93 40.8 27.7 26 <5
1.1 33.2 8.72 3.1 8.05 114.2 12.1 11 <5
1.1 33.3 8.72 3.1 8.01 113.7 12.1 9.3 <5
1.4 31.2 7.74 16.2 5.72 84.3 19.5 14 <5
1.4 31.2 7.75 16.2 5.68 83.8 19.4 13 <5
1.0 33.4 7.24 3.5 5.11 71.5 10.2 19 <5
1.0 33.3 7.22 3.5 5.08 71.1 10.3 10 <5
1.0 28.5 7.12 2.4 5.86 76.5 34.6 17 <5
1.1 28.6 7.12 2.5 5.90 77.0 34.5 18 <5
1.1 28.5 7.12 2.4 5.86 76.5 34.6 38 <5
1.2 28.6 7.12 2.5 5.90 77.0 34.5 29 <5
1.1 33.2 8.72 3.1 8.05 114.2 12.1 24 <5
1.2 33.3 8.72 3.1 8.01 113.7 12.1 25 <5
1.2 34.8 7.20 5.0 7.40 104.8 7.53 11 <5
1.2 34.8 7.18 5.0 7.43 105.2 7.54 9.3 <5
1.3 34.8 7.18 5.0 7.43 105.2 7.54 9.8 <5
1.3 34.8 7.18 5.0 7.42 105.3 7.54 7.8 <5
1.0 29.6 7.08 4.6 4.74 63.9 9.79 11 <5
1.0 29.7 7.09 4.6 4.72 63.6 9.74 13 <5
27/7/2023 15:40 Fine
29/7/2023 12:10 Rainy
22/7/2023 15:30 Fine
25/7/2023 12:00 Fine
18/7/2023 12:05 Drizzle
20/7/2023 15:30 Fine
13/7/2023 16:30 Fine
15/7/2023 12:40 Cloudy
8/7/2023 13:00 Fine
11/7/2023 15:15 Fine
4/7/2023 12:50 Cloudy
6/7/2023 15:30
Fine
Location: Sluice Gate 7
0
5
10
15
20
25
30
35
40
4/7/2023
5/7/2023
6/7/2023
7/7/2023
8/7/2023
9/7/2023
10/7/2023
11/7/2023
12/7/2023
13/7/2023
14/7/2023
15/7/2023
16/7/2023
17/7/2023
18/7/2023
19/7/2023
20/7/2023
21/7/2023
22/7/2023
23/7/2023
24/7/2023
25/7/2023
26/7/2023
27/7/2023
28/7/2023
29/7/2023
Concentration,
℃
Temperature (℃)
Temperature (oC)
5
5.5
6
6.5
7
7.5
8
8.5
9
4/7/2023
5/7/2023
6/7/2023
7/7/2023
8/7/2023
9/7/2023
10/7/2023
11/7/2023
12/7/2023
13/7/2023
14/7/2023
15/7/2023
16/7/2023
17/7/2023
18/7/2023
19/7/2023
20/7/2023
21/7/2023
22/7/2023
23/7/2023
24/7/2023
25/7/2023
26/7/2023
27/7/2023
28/7/2023
29/7/2023
Concentration, pH
pH
pH
0
2
4
6
8
10
12
14
16
18
4/7/2023
5/7/2023
6/7/2023
7/7/2023
8/7/2023
9/7/2023
10/7/2023
11/7/2023
12/7/2023
13/7/2023
14/7/2023
15/7/2023
16/7/2023
17/7/2023
18/7/2023
19/7/2023
20/7/2023
21/7/2023
22/7/2023
23/7/2023
24/7/2023
25/7/2023
26/7/2023
27/7/2023
28/7/2023
29/7/2023
Concentration, ppt
Salinity (ppt)
Salinity (ppt)
1
2
3
4
5
6
7
8
9
4/7/2023
5/7/2023
6/7/2023
7/7/2023
8/7/2023
9/7/2023
10/7/2023
11/7/2023
12/7/2023
13/7/2023
14/7/2023
15/7/2023
16/7/2023
17/7/2023
18/7/2023
19/7/2023
20/7/2023
21/7/2023
22/7/2023
23/7/2023
24/7/2023
25/7/2023
26/7/2023
27/7/2023
28/7/2023
29/7/2023
Concentration,
mg/L
DO (mg/L)
DO (mg/L)
Action Levels
Limit Levels
0
20
40
60
80
100
120
4/7/2023
5/7/2023
6/7/2023
7/7/2023
8/7/2023
9/7/2023
10/7/2023
11/7/2023
12/7/2023
13/7/2023
14/7/2023
15/7/2023
16/7/2023
17/7/2023
18/7/2023
19/7/2023
20/7/2023
21/7/2023
22/7/2023
23/7/2023
24/7/2023
25/7/2023
26/7/2023
27/7/2023
28/7/2023
29/7/2023
Concentration, %
DO (%)
DO (%)
0.0
10.0
20.0
30.0
40.0
50.0
4/7/2023
5/7/2023
6/7/2023
7/7/2023
8/7/2023
9/7/2023
10/7/2023
11/7/2023
12/7/2023
13/7/2023
14/7/2023
15/7/2023
16/7/2023
17/7/2023
18/7/2023
19/7/2023
20/7/2023
21/7/2023
22/7/2023
23/7/2023
24/7/2023
25/7/2023
26/7/2023
27/7/2023
28/7/2023
29/7/2023
Concentration, NTU
Turbidity (NTU)
Turbidity (NTU)
Action Levels
Limit Levels
0
20
40
60
80
100
120
4/7/2023
5/7/2023
6/7/2023
7/7/2023
8/7/2023
9/7/2023
10/7/2023
11/7/2023
12/7/2023
13/7/2023
14/7/2023
15/7/2023
16/7/2023
17/7/2023
18/7/2023
19/7/2023
20/7/2023
21/7/2023
22/7/2023
23/7/2023
24/7/2023
25/7/2023
26/7/2023
27/7/2023
28/7/2023
29/7/2023
Concentration, mg/L
SS (mg/L)
SS (mg/L)
Action Levels
Limit Levels
0
2
4
6
8
10
4/7/2023
5/7/2023
6/7/2023
7/7/2023
8/7/2023
9/7/2023
10/7/2023
11/7/2023
12/7/2023
13/7/2023
14/7/2023
15/7/2023
16/7/2023
17/7/2023
18/7/2023
19/7/2023
20/7/2023
21/7/2023
22/7/2023
23/7/2023
24/7/2023
25/7/2023
26/7/2023
27/7/2023
28/7/2023
29/7/2023
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)
0.8 31.7 7.11 3.8 3.12 43.3 42.7 40 <5
0.9 31.7 7.13 3.8 3.15 43.7 42.8 27 <5
1.3 33.0 8.46 14.4 7.82 117.7 86.9 27 <5
1.2 32.7 8.32 14.2 7.84 117.3 86.4 30 <5
1.1 31.7 7.11 3.8 3.12 43.3 42.7 57 <5
1.0 31.7 7.12 3.8 3.13 43.8 42.8 34 <5
0.7 33.4 7.52 5.3 4.82 69.5 24.9 25 <5
0.7 33.4 7.53 5.3 4.86 70.1 25.2 35 <5
1.2 31.3 7.89 15.4 4.26 62.7 24.9 13 <5
1.2 31.3 7.93 15.5 4.29 63.1 24.9 28 <5
0.9 33.5 7.32 5.1 4.41 63.5 24.5 23 <5
0.9 33.5 7.33 5.1 4.38 63.1 24.6 16 <5
0.9 27.9 7.20 3.3 4.48 58.1 35.0 18 <5
0.9 27.9 7.19 3.3 4.44 57.6 35.1 20 <5
1.0 27.9 7.20 3.3 4.48 58.1 35.0 31 <5
0.9 27.9 7.19 3.3 4.44 57.6 35.1 25 <5
1.0 33.4 7.52 5.3 4.82 69.5 24.9 17 <5
0.8 33.4 7.53 5.3 4.86 70.1 25.2 16 <5
0.9 33.3 7.27 5.7 4.02 58.0 19.0 25 <5
0.9 33.3 7.26 5.7 4.04 58.3 18.9 35 <5
1.1 33.3 7.27 5.7 4.02 58.0 19.0 15 <5
1.0 33.3 7.26 5.7 4.04 58.3 18.9 18 <5
0.9 29.4 7.27 4.8 4.68 62.8 12.8 20 <5
0.9 29.4 7.28 4.8 4.66 62.2 12.8 14 <5
27/7/2023 16:15 Fine
29/7/2023 12:30 Rainy
22/7/2023 16:00 Fine
25/7/2023 12:20 Fine
18/7/2023 12:25 Drizzle
20/7/2023 16:00 Fine
13/7/2023 17:00 Fine
15/7/2023 13:00 Cloudy
8/7/2023 13:30 Fine
11/7/2023 15:35 Fine
4/7/2023 13:10 Cloudy
6/7/2023 16:00
Fine
Location: Sluice Gate 19
0
5
10
15
20
25
30
35
40
4/7/2023
5/7/2023
6/7/2023
7/7/2023
8/7/2023
9/7/2023
10/7/2023
11/7/2023
12/7/2023
13/7/2023
14/7/2023
15/7/2023
16/7/2023
17/7/2023
18/7/2023
19/7/2023
20/7/2023
21/7/2023
22/7/2023
23/7/2023
24/7/2023
25/7/2023
26/7/2023
27/7/2023
28/7/2023
29/7/2023
Concentration,
℃
Temperature (℃)
Temperature (oC)
5
5.5
6
6.5
7
7.5
8
8.5
9
4/7/2023
5/7/2023
6/7/2023
7/7/2023
8/7/2023
9/7/2023
10/7/2023
11/7/2023
12/7/2023
13/7/2023
14/7/2023
15/7/2023
16/7/2023
17/7/2023
18/7/2023
19/7/2023
20/7/2023
21/7/2023
22/7/2023
23/7/2023
24/7/2023
25/7/2023
26/7/2023
27/7/2023
28/7/2023
29/7/2023
Concentration, pH
pH
pH
0
2
4
6
8
10
12
14
16
18
4/7/2023
5/7/2023
6/7/2023
7/7/2023
8/7/2023
9/7/2023
10/7/2023
11/7/2023
12/7/2023
13/7/2023
14/7/2023
15/7/2023
16/7/2023
17/7/2023
18/7/2023
19/7/2023
20/7/2023
21/7/2023
22/7/2023
23/7/2023
24/7/2023
25/7/2023
26/7/2023
27/7/2023
28/7/2023
29/7/2023
Concentration, ppt
Salinity (ppt)
Salinity (ppt)
1
2
3
4
5
6
7
8
9
4/7/2023
5/7/2023
6/7/2023
7/7/2023
8/7/2023
9/7/2023
10/7/2023
11/7/2023
12/7/2023
13/7/2023
14/7/2023
15/7/2023
16/7/2023
17/7/2023
18/7/2023
19/7/2023
20/7/2023
21/7/2023
22/7/2023
23/7/2023
24/7/2023
25/7/2023
26/7/2023
27/7/2023
28/7/2023
29/7/2023
Concentration,
mg/L
DO (mg/L)
DO (mg/L)
Action Levels
Limit Levels
0
20
40
60
80
100
120
140
4/7/2023
5/7/2023
6/7/2023
7/7/2023
8/7/2023
9/7/2023
10/7/2023
11/7/2023
12/7/2023
13/7/2023
14/7/2023
15/7/2023
16/7/2023
17/7/2023
18/7/2023
19/7/2023
20/7/2023
21/7/2023
22/7/2023
23/7/2023
24/7/2023
25/7/2023
26/7/2023
27/7/2023
28/7/2023
29/7/2023
Concentration, %
DO (%)
DO (%)
10.0
60.0
110.0
160.0
4/7/2023
5/7/2023
6/7/2023
7/7/2023
8/7/2023
9/7/2023
10/7/2023
11/7/2023
12/7/2023
13/7/2023
14/7/2023
15/7/2023
16/7/2023
17/7/2023
18/7/2023
19/7/2023
20/7/2023
21/7/2023
22/7/2023
23/7/2023
24/7/2023
25/7/2023
26/7/2023
27/7/2023
28/7/2023
29/7/2023
Concentration, NTU
Turbidity (NTU)
Turbidity (NTU)
Action Levels
Limit Levels
0
50
100
150
4/7/2023
5/7/2023
6/7/2023
7/7/2023
8/7/2023
9/7/2023
10/7/2023
11/7/2023
12/7/2023
13/7/2023
14/7/2023
15/7/2023
16/7/2023
17/7/2023
18/7/2023
19/7/2023
20/7/2023
21/7/2023
22/7/2023
23/7/2023
24/7/2023
25/7/2023
26/7/2023
27/7/2023
28/7/2023
29/7/2023
Concentration, mg/L
SS (mg/L)
SS (mg/L)
Action Levels
Limit Levels
0
2
4
6
8
10
4/7/2023
5/7/2023
6/7/2023
7/7/2023
8/7/2023
9/7/2023
10/7/2023
11/7/2023
12/7/2023
13/7/2023
14/7/2023
15/7/2023
16/7/2023
17/7/2023
18/7/2023
19/7/2023
20/7/2023
21/7/2023
22/7/2023
23/7/2023
24/7/2023
25/7/2023
26/7/2023
27/7/2023
28/7/2023
29/7/2023
Concentration, mg/L
O&G (mg/L)
O&G (mg/L)
