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Reservoir Monitoring

Trophic state indices of reservoirs around Taiwan

Legend

No testing data

Oligotrophic

Mesotrophic

Eutrophic

Lienchiang Kinmen Penghu Te-Chi Reservoir : Mesotrophic 49 Nan-Hua Reservoir : Mesotrophic 45 Ching-Mien Reservoir : Eutrophic 58 Wu-Shan-Tou Reservoir : Eutrophic 56 Pai-Ho Reservoir : Mesotrophic 49 Mu-Tan Reservoir : Mesotrophic 49 Tou-She Reservoir : Eutrophic 57 Jih-Yueh-Tan Reservoir : Mesotrophic 41 Wu-She Reservoir : Eutrophic 55 Yung-Ho-Shan Reservoir : Mesotrophic 50 Feng-Shan Reservoir : Eutrophic 80 Cheng-Ching-Hu Reservoir : Eutrophic 56 A-Kung-Tien Reservoir : Eutrophic 52 Li-Yu-Tan Reservoir : Mesotrophic 43 Ming-Te Reservoir : Eutrophic 60 Shih-Men Reservoir : Eutrophic 50 IIPao-Shan Reservoir : Eutrophic 57 大埔水庫 Hushan reservoir : Eutrophic 51 Fei-Tsui Reservoir : Oligotrophic 36 Hsi-Shih Reservoir : Eutrophic 51 Hsin-Shan Reservoir : Mesotrophic 50 Tseng-Wen Reservoir : Mesotrophic 45 Jen-Yi-Tan Reservoir : Eutrophic 60 Lan-Tan Reservoir : Eutrophic 51 Pao-Shan Reservoir : Mesotrophic 42 Tung-Yung Reservoir : Eutrophic 69 Chiu-Kuei-Shan Reservoir : Eutrophic 53 Houwo : Eutrophic 59 Chu-Shui-Wo Lower Dam : Eutrophic 60 Chu-Shui-Wo Upper Dam : Eutrophic 56 No.1 Chin-Sha Reservoir : Eutrophic 61 Chin-Sha Reservoir : Eutrophic 56 Sheng-Li Reservoir : Eutrophic 59 Pan-Li Reservoir : Eutrophic 62 Ling-Hu Reservoir : Eutrophic 72 Shan-Hsi Reservoir : Eutrophic 63 Tien-Pu Reservoir : Eutrophic 67 Lien-Hu Reservoir : Eutrophic 68 Jin-Hu Reservoir : Eutrophic 66 Tai-Hu Reservoir : Eutrophic 75 Jung-Hu Reservoir : Eutrophic 74 Jinsha Reservoir : Eutrophic 71 Ran-Hu Reservoir : Eutrophic 77 Ching-Tien Reservoir : Eutrophic 70 Hsi-Hu Reservoir : Eutrophic 78 Hsiao-Chih Reservoir : Eutrophic 59 Chi-Mei Reservoir : Eutrophic 60 Hsi-An Reservoir : Mesotrophic 45 Hsing-Jen Reservoir : Eutrophic 74 Tung-Wei Reservoir : Eutrophic 72 Cheng-Kung Reservoir : Eutrophic 71

Statistics Time : 2025 Q1

The monitoring frequency of reservoirs is

once every quarter

Rankings of eutrophic reservoirs

26 reservoirs around Taiwan are monitored, 20 of which are important sources of domestic water supply, including Hsin-Shan, Fei-Tsui, Shih-Men, Pao-Shan, Yung-Ho-Shan, Ming-Te, Li-Yu-Tan, Te-Chi, Wu-She, Jih-Yueh-Tan, Lan-Tan, Jen-Yi-Tan, Pai-Ho, Tseng-Wen, Wu-Shan-Tou, Nan-Hua, Ching-Mien, Cheng-Ching-Hu, Feng-Shan, and Mu-Tan Reservoirs. The other six reservoirs, including Hsi-Shih, Pao-Shan II, Ta-Pu, Tou-She, Hushan, and A-Kung-Tien Reservoirs, have smaller storage areas and mainly provide water for industrial or agricultural purposes. Thus, they are considered secondary reservoirs.

1
Feng-Shan Reservoir
80
2
Ming-Te Reservoir
60
3
Jen-Yi-Tan Reservoir
60

Statistics Time : Feb, 2025

Hsin-Shan Reservoir - Water pollution information

Please enter Reservoir station
Hsin-Shan Reservoir I :Mesotrophic (50) Hsin-Shan Reservoir II :Mesotrophic (50)
Legend

No testing data

Oligotrophic

Mesotrophic

Eutrophic

Water monitoring station information

Water Classification

B

  • Category A water bodies may be used for Class 1 public water, swimming and as Category B, C, D, and E water bodies.
  • Category B water bodies may be used for Class 2 public water, Class 1 aquaculture water and as Category C, D, and E water bodies.
  • Category C water bodies may be used for Class 3 public water, Class 2 aquaculture water, Class 1 industrial water and as Category D and E water bodies.
  • Category D water bodies may be used for irrigation water, Class 2 industrial water, and environmental conservation.
  • Category E water bodies may be used for environmental conservation.
Latitude and longitude

25°7'50",121°42'35.6"

Recent monitoring sample photos

Hsin-Shan Reservoir I_上游周遭環境
Hsin-Shan Reservoir I_下游周遭環境
Hsin-Shan Reservoir I_採樣狀況
Hsin-Shan Reservoir I_水色

Testing information

Statistics Time : 2025/02/05

CTSI
Mesotrophic50
SD(m)
1.4
Chl_a(μg/L)
3.2
Total Phosphate(mg/L)
0.029
Sampling Depth(m)
0.5
Atmospheric Temp.(℃)
16.7
Water Temp.(℃)
16.2
pH
7.27
EC(μmho/cm25℃)
133
DO(Electrode)(mg/L)
8.7
DOS(%)
89.0
TB(NTU)
4.0
SS(mg/L)
2.2
COD(mg/L)
8.6
NH3-N(mg/L)
0.02
TOC(mg/L)
1.12
TN(mg/L)
0.68

* ND means the test value is smaller than the method detection limit.

Hsin-Shan Reservoir I Station - Carlson trophic state index (CTSI) in the last five years

Hsin-Shan Reservoir I Station - Trend chart of Carlson trophic state index (CTSI) in the last five years

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