The situation of coastal erosion in Thailand

The Eastern Gulf of Thailand

According to the Project on the Establishment of the Master Plan for Mitigating Coastal Erosion and Port Planning to Support the Expansion of the Eastern Industrial Area in 2009 (Department of Marine and Coastal Resources, B.E. 2552a), it was found that four districts of Chonburi Province, Muang Chonburi, Banglamung, Sriracha, and Sattaheep, were experienced with coastal erosion with the distance of 17.6 kilometers; three districts of Rayong Province, Muang Rayong, Banchang, and Klang, were faced with coastal erosion with the distance of 24.35 kilometers; four districts of Chantaburi Province, Laemsing, Klung, Na Yai Arm, and Thamai were faced with coastal erosion with the distance of 31.17 kilometers; three districts of Trat Province, Muang Trat, Laem Ngob, and Klong Yai were faced with coastal erosion with the distance of 47.61 kilometers.

In 2011, the Department of Marine and Coastal Resources reported that four districts of Chonburi Province, Muang Chonburi, Banglamung, Sriracha, and Sattaheep, were experienced with moderate coastal erosion with the distance of 24.35 kilometers; three districts of Rayong Province, Klang, Banchang, and Muang Rayong, were faced with moderate coastal erosion with the distance of 53.66 kilometers; four districts of Chantaburi Province, Klung, Tha-mai, Nayai-arm, and Laemsing, were faced with moderate and severe coastal erosion with the distance of 23.21 and 12 kilometers, respectively; three districts of Trat Province, Klongyai, Muang Trat, and Laem Ngob, were faced with moderate coastal erosion with the distance of 47.61 kilometers. (Table ) (Department of Marine and Coastal Resources, B.E. 2554)

 

The Upper Gulf of Thailand

According to the information from the Project on the Establishment of the Master Plan for Mitigating Coastal Erosion of Phetchaburi Province to Prachuap Khiri Khan Province (Department of Marine and Coastal Resources, B.E. 2546), it was revealed that four districts of Phetchaburi Province, Muang Phetchaburi, Cha Am, Ban Leam, and Tha Yang were experienced with coastal erosion with the distance of 30.99 kilometers. Additionally, the results from Project on the Establishment of the Master Plan for Mitigating Coastal Erosion in the upper Gulf of Thailand (Department of Marine and Coastal Resources, B.E. 2551a) revealed that the coasts of Bangpakong District in Chachoengsao Province were eroded for 7.4 kilometers long; Samut Prakan had two districts, Muang Samut Prakan and Prasamut Chedi facing with coastal erosion with total distance of 31.06 kilometers; Bangkhuntien District of Bangkok Province, Muang Samut Sakorn District of Samut Sakorn Province, and Muang Samut Songkhram District of Samut Songkhram Province were faced with coastal erosion with total distance of 4.85, 26.26, and 1.22  kilometers, respectively.

In 2011, the Department of Marine and Coastal Resources reported that (Table ) four districts of Phetchaburi Province, Cha-am, Tha-yang, Banlaem, and Muang, were experienced with moderate and severe coastal erosion with the distance of 39.35 and 10.4 kilometers, respectively; Bangpakong District of Rayong Province was faced with moderate and severe coastal erosion with the distance of 2.04 and 5.85 kilometers, respectively; three districts of Samut Prakan Province, Bangbor, Phra Samut Chedi, and Muang Samut Prakan, were faced with moderate and severe coastal erosion with the distance of 3.22 and 31.47 kilometers, respectively; Bangkhuntien District of Bangkok Province was faced with severe coastal erosion with the distance of 5.71 kilometers; Muang Samut Sakorn District of Samut Sakorn Province was faced with moderate and severe coastal erosion with the distance of 19.69 and 13.76 kilometers; Muang Samut Songkram of Samut Songkram Province was also faced with moderate coastal erosion with the distance of 2.96 kilometers (Department of Marine and Coastal Resources, B.E. 2554).

 

The Central Gulf of Thailand

According to the information from the Project on the Establishment of the Master Plan for Mitigating Coastal Erosion of Phetchaburi Province to Prachuap Khiri Khan Province (Department of Marine and Coastal Resources, B.E. 2546), it was revealed that Hua Hin District of Prachuap Khiri Khan province was experienced with coastal erosion with the distance of 42 kilometers. Additionally, in 2008, five districts of Chumporn province were faced with coastal erosion with the distance of 16.80 kilometers, while three districts of Surat Thani, Chai Ya, Don Sak, and Tha Chana were faced with coastal erosion with the distance of 23.5 kilometers (Department of Marine and Coastal Resources, B.E. 2551a).

In 2011, the Department of Marine and Coastal Resources reported that (Table ) eight districts of Prachuap Khiri Khan Province, Kuiburi, Tabsakae, Bang Sapan, Bang Sapan Noi, Pranburi, Muang Prachuab Khiri Khan, Sam Roi Yod, Hua Hin, were experienced with moderate and severe coastal erosion with the distance of 76.19 and 1.93 kilometers, respectively; six districts of Chumporn Province, Tung Ta Ko, Muang chumporn, Lamae, Sawee, and Lang Suan, were faced with moderate coastal erosion with the distance of 31.94 kilometers; seven districts of Surat Thani Province, Kanchanadit, Chai Ya, Don Sak, Tha Chang, Tha Chana, Phoon Phin, and Muang Surat Thani, were also faced with moderate and severe coastal erosion with the distance of 29.85 and 7.72 kilometers, respectively. (Department of Marine and Coastal Resources, B.E. 2554).

 

The Lower Gulf of Thailand

According to the Report on the Strategic on the Management and Prevention and Solving of the Coastal Erosion Problem in 2008 (Department of Marine and Coastal Resources, B.E. 2551b), it was revealed that three districts of Pattani Province, Muang Pattani, Ya Ring, Nong Chik, were experienced with coastal erosion with the distance of 23.5 kilometers; Muang Narathiwat District was also faced with coastal erosion with the distance of 41.2 kilometers. Additionally, the results from Project on the Establishment of the Master Plan for Mitigating Coastal Erosion in the lower Gulf of Thailand from Ta Lum Puk Cape to the estuary of Songkhla lake in 2008 (Department of Marine and Coastal Resources, B.E. 2551b) revealed that two districts of Nakhon Si Thammarat, Pak Panang and Hua Sai, were faced with coastal erosion with total distance of 29.96 kilometers; three districts of Songkhla Province, Ranod, Sing Nakhon, and Sating Phra, were faced with coastal erosion with total distance of 44.5 kilometers.

According to the report on the Situation of Coastal Erosion in Thailand in 2011 (Table ), it was revealed that six districts of Pattani Province, Pa Na Rae, Muang Pattani, Mai Kaen, Ya Ring, Saiburi, and Nong Chik, were experienced with moderate and severe coastal erosion with the distance of 37.67 and 24.27 kilometers, respectively; three districts of Narathiwat Province, Tak Bai, Muang Narathiwat, and Bang Nak, were faced with moderate and severe coastal erosion with the distance of 15.96 and 28.03 kilometers, respectively; six districts of Nakhon Si Thammarat Province, Kha Nom, Tha Sa La, Pak Pha Nang, Muang Nakhon Si Thammarat, Si chon, and Hua Sai, were also faced with moderate and severe coastal erosion with the distance of 53.21 and 73.66 kilometers, respectively; six districts of Songkhla Province, Cha Na, The Pha, Muang Songkhla, Ra Noad, Sating Phra, and Sing Nakhon, were also faced with moderate and severe coastal erosion with the distance of 41.09 and 13.43 kilometers, respectively.  (Department of Marine and Coastal Resources, B.E. 2554).

 

The Upper Part of Andaman Sea

According to the Report on the Strategic on the Management and Prevention and Solving of the Coastal Erosion Problem in 2008, it was revealed that five districts of Ranong province, Muang Ranong, Suk Sam Ran, Ko Yao Yai, La Aoon, and Ka Por, were experienced with coastal erosion with the distance of 27.5 kilometers; four districts of Phang Nga Province, Kuraburi, Ta Koa Pa, Tai Muang, and Ko Yoa Noi, were faced with coastal erosion with the distance of 27 kilometers; and the coast of Tha Lang District in  Phuket is eroded with the distance of 4.5 kilometers. (Department of Marine and Coastal Resources, B.E. 2551b)

According to the report on the Situation of Coastal Erosion in Thailand in 2011 (Table 1), it revealed that five districts of Ranong Province, Muang Ranong, Suk Sam Ran, Ko Yao Yai, La Aoon, and Ka Por, were experienced with moderate and severe coastal erosion with the distance of 12.16 and 7.63 kilometers, respectively; five districts of Phang Nga Province, Kuraburi, Ta Koa Toong, Ta Koa Pa, Tai Muang, and Muang Phang Nga, were faced with moderate coastal erosion with the distance of 17.16 kilometers, respectively; three districts of Phuket Province, Ka Thoo, Tha Lang, Muang Phuket, were also faced with moderate and severe coastal erosion with the distance of 4.64 and 1.56 kilometers, respectively (Department of Marine and Coastal Resources, B.E. 2554)

 

 

The Lower Part of Andaman Sea

 The Report on the Strategic on the Management and Prevention and Solving of the Coastal Erosion Problem in 2008 (Department of Marine and Coastal Resources, B.E. 2551b) revealed that two districts of Krabi Province, Muang Krabi and Klong Thom, were experienced with coastal erosion with the distance of 17 kilometers; three districts of Trang Province, Si Kao, Pa Lian, and Kan Tang were faced with coastal erosion with the distance of 22.5 kilometers; three districts of Satun Province, Muang Satun, Thung Wha, and La Au, were also faced with coastal erosion with the distance of 15 kilometers.

According to the report on the Situation of Coastal Erosion in Thailand in 2011 , it revealed that five districts of Krabi Province, Ko Lan Ta, Klong Thom, Nuea Klong, and Ao Luek were experienced with moderate and severe coastal erosion with the distance of 16.55 and 5.08 kilometers, respectively; four districts of Trang Province, Kan Tang, Pa Lian, Si Koa, and Had Sam Ran,  were faced with moderate and severe coastal erosion with the distance of 14.86 and 3.94 kilometers, respectively; four districts of Satun Province, Tha Phae, Tha Wung, Muang Satun, and La Ngu, were also faced with moderate and severe coastal erosion with the distance of 9.6 and 6.86 kilometers, respectively (Department of Marine and Coastal Resources, B.E. 2554).

Table  Status of coastal erosion of Thailand’s coastlines

Provinces

Number of administrative areas

Number of administrative areas facing with coastal erosion

Length of coastline (km.)

Length of eroded coastline (km.)

Districts

Subdistricts

Districts

Subdistricts

Moderate

Erosion

Severe Erosion

Total

Eastern Gulf of Thailand

36

264

14

62

562.81

148,364

12

160.64

Trat

7

38

3

16

184.30

46.63

-

46.63

Chantaburi

10

76

4

9

102.25

23.21

12.00

35.21

Rayong

8

58

3

15

104.48

3.66

-

53.66

Chonburi

11

92

4

22

171.78

25.14

-

25.14

 

 

 

 

Table  Status of coastal erosion of Thailand’s coastlines (Continued)

Provinces

Number of administrative areas

Number of administrative areas facing with coastal erosion

Length of coastline (km.)

Length of eroded coastline (km.)

Districts

Subdistricts

Districts

Subdistricts

Moderate

Erosion

Severe Erosion

Total

Upper Gulf of Thailand

81

423

11

35

232.01

67.26

67.18

134.45

Chacherngsao

11

50

1

3

16.28

2.04

5.85

7.89

Samut Prakan

6

50

3

6

50.21

3.22

31.47

34.69

Bangkok

50

154

1

1

5.81

-

5.71

5.71

Samut Sakorn

3

40

1

8

42.78

19.69

13.76

33.45

Samut Songkram

3

36

1

4

25.20

2.96

-

2.96

Petchburi

6

89

4

18

91.73

39.35

10.40

49.75

Central Gulf of Thailand

35

249

21

65

660.88

137.98

9.65

147.63

Prachuap Khiri khan

8

48

8

23

246.75

76.19

1.93

78.12

Chumporn

8

70

6

22

247.75

31.94

-

31.94

Surat Thani

19

131

7

20

166.38

29.85

7.72

37.57

Lower Gulf of Thailand

64

488

20

77

599.48

147.93

139.39

287.33

Nakhon Si thammarat

23

168

6

25

244.99

53.21

73.66

126.87

Songkhla

16

127

6

28

157.90

41.09

13.43

54.52

Pattani

12

115

6

18

138.83

37.67

24.27

61.94

Narathiwat

13

77

2

6

57.76

15.96

28.03

43.99

Upper Coast of Andaman Sea

16

95

12

40

585.34

33.96

9.19

43.15

Ranong

5

30

3

7

137.92

12.16

7.63

19.79

Phang-nga

8

48

6

18

241.53

17.16

-

17.16

Phuket

3

17

3

15

205.89

4.64

1.56

6.20

Krabi

8

53

5

17

216.31

16.55

5.08

21.63

Trang

10

87

4

11

136.33

14.86

3.94

8.80

Satun

7

36

4

13

155.07

9.60

6.86

16.46

Grand Total

257

1,695

91

320

3,148.23

576.78

253.29

830.09

Sources Department of Marine and Coastal Department (B.E. 2554)