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
(oC)
pH Salinity
(ppt)
DO
(mg/L) DO (%) Turbidit
y (NTU)
SS
(mg/L)
O&G
(mg/L)
1.3 34.8 7.18 5.0 7.43 105.2 7.54 34 <5
1.4 34.8 7.19 5.0 7.40 104.8 7.53 25 <5
1.4 31.9 7.05 3.2 2.95 41.3 27.7 13 <5
1.2 31.9 7.04 3.2 2.91 40.7 27.6 14 <5
1.4 31.2 7.75 16.3 5.68 83.8 19.4 19 <5
1.3 31.2 7.74 16.2 5.72 84.3 19.5 21 <5
1.0 32.2 7.12 6.6 3.93 55.5 12.4 13 <5
1.0 32.2 7.13 6.6 3.90 55.1 12.4 12 <5
5/8/2023 12:30 Fine
8/8/2023 13:20 Cloudy
1/8/2023 15:30 Fine
3/8/2023 15:30 Fine
Location: Sluice Gate 7
29
30
31
32
33
34
35
36
1/8/2023 3/8/2023 5/8/2023 7/8/2023
Concentration,
℃
Temperature (℃)Temperature (oC)
5
5.5
6
6.5
7
7.5
8
1/8/2023 3/8/2023 5/8/2023 8/8/2023
Concentration, pH
pH pH
0
2
4
6
8
10
12
14
16
18
1/8/2023 3/8/2023 5/8/2023 8/8/2023
Concentration, ppt
Salinity (ppt) Salinity (ppt)
2.5
3.5
4.5
5.5
6.5
7.5
1/8/2023 3/8/2023 5/8/2023 8/8/2023
Concentration,
mg/L
DO (mg/L) DO (mg/L)
Action Level
Limit Level
0
20
40
60
80
100
120
1/8/2023 3/8/2023 5/8/2023 8/8/2023
Concentration, %
DO (%) DO (%)
0.0
10.0
20.0
30.0
40.0
50.0
1/8/2023 3/8/2023 5/8/2023 8/8/2023
Concentration, NTU
Turbidity (NTU) Turbidity (NTU)
Action Level
Limit Level
0
20
40
60
80
100
120
1/8/2023 3/8/2023 5/8/2023 8/8/2023
Concentration, mg/L
SS (mg/L) SS (mg/L)
Action Level
Limit Level
0
2
4
6
8
10
1/8/2023 3/8/2023 5/8/2023 8/8/2023
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
(oC)
pH Salinity
(ppt)
DO
(mg/L) DO (%) Turbidit
y (NTU)
SS
(mg/L)
O&G
(mg/L)
1.0 33.3 7.26 5.7 4.04 58.3 18.9 33 <5
1.2 33.3 7.27 5.7 4.02 58.0 19.0 28 <5
1.0 31.7 7.13 3.8 3.15 43.7 42.8 19 <5
1.1 31.7 7.11 3.8 3.12 43.3 42.7 23 <5
1.0 31.3 7.93 15.5 4.29 63.1 24.9 46 <5
1.1 31.3 7.89 15.4 4.26 62.7 24.9 34 <5
0.9 31.6 7.24 6.0 2.56 36.0 22.7 43 <5
0.9 31.6 7.23 6.0 2.59 36.4 22.8 48 <5
5/8/2023 13:01 Fine
8/8/2023 13:20 Cloudy
1/8/2023 16:00 Fine
3/8/2023 16:00 Fine
Location: Sluice Gate 19
30
30.5
31
31.5
32
32.5
33
33.5
1/8/2023 3/8/2023 5/8/2023 8/8/2023
Concentration,
℃
Temperature (℃)Temperature (oC)
5
5.5
6
6.5
7
7.5
8
8.5
1/8/2023 3/8/2023 5/8/2023 8/8/2023
Concentration, pH
pH pH
0
2
4
6
8
10
12
14
16
18
1/8/2023 3/8/2023 5/8/2023 8/8/2023
Concentration, ppt
Salinity (ppt) Salinity (ppt)
2
2.5
3
3.5
4
4.5
1/8/2023 3/8/2023 5/8/2023 8/8/2023
Concentration,
mg/L
DO (mg/L) DO (mg/L)
Action Level
Limit Level
0
10
20
30
40
50
60
70
1/8/2023 3/8/2023 5/8/2023 8/8/2023
Concentration, %
DO (%) DO (%)
10.0
60.0
110.0
160.0
1/8/2023 3/8/2023 5/8/2023 8/8/2023
Concentration, NTU
Turbidity (NTU) Turbidity (NTU)
Action Level
Limit Level
0
50
100
150
1/8/2023 3/8/2023 5/8/2023 8/8/2023
Concentration, mg/L
SS (mg/L) SS (mg/L)
Action Level
Limit Level
0
2
4
6
8
10
1/8/2023 3/8/2023 5/8/2023 8/8/2023
Concentration, mg/L
O&G (mg/L) O&G (mg/L)
