20220128-Water Situation and mitigation for drought

On 28 January 2022 28/01/65

1

Overview of water situation in Rayong-Chonburi area on 28 Jan 2022 1 P2

Chonburi

P1

Reservoir capacity (MCM) Current storage volume (MCM) Percentage of reservoir capacity Useable storage volume Samnakbok (excluding Dead Reserve Pond Storage) (MCM) 15.53

P3 P4

Private Pond

BangPhra

Nong Kho

Dokkrai

Nong Pla Lai

Klong Yai

Prasae

117.00

21.40

71.40

163.75

40.10

295.00

101.57

20.50

66.98

151.27

36.11

256.02

87%

96%

94%

92%

90%

87%

89.52

19.50

63.98

137.77

33.11

236.02

0.679

1.296

0.565

P5

Inflow into reservoir (MCM) (On 27 Jan 2022)

101.57

Bang Phra res.

P6

20.50

Nong Kho res.

P7

71.61

Water volume compared to previous week (-decrease, +increase) (MCM) Total water volume in each area

34.84

66.98

Rayong

2.540 -1.47

-0.60

+0.00

-1.36

122.07 MCM (88.2%)

254.35 MCM (92.41%)

36.11

Dok Krai res.

P8

P12

P9

256.02

Prasae res.

P

P15

P10

XX

XX XX

P13

195.81

Ref: Royal Irrigation Department

+0.40 -3.70

-2.07

Khlong Yai res.

151.27 Nong Pla Lai res.

P11

-1.75

Raw Water Pipe Line (EW) P14

Existing Pipe Network Constructing Pipe Network

Demand 2564 (MCM.) Supply (MCM.) Pump Station Raw Water Pipe Line (RID) Existing Pipe Network Constructing Pipe Network

Water situation of Bangphra, Nongkho Reservoir Water volume in Bangphra and Nongkho Reservoirs (MCM.)

Water Situation of Bangphra and Nongkho Reservoirs

170 160 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 0

Maximum 2006-2021

2004

2005

2015

2016

2017

2018

2019

2020

2021

Capacity

Dead storage

URC - RID

LRC - RID

Average 2006-2021

2022

160

Maximum 2006-2021 Average 2006-2021

140

URC - RID

28 Jan 2022 122.071 MCM. 88.2 %

2 Reservoirs total capacity 138.4 MCM. 2

120

100

1

80

60

40

20

Minimum reservoir volume 13.05 MCM. LRC - RID

0

28/01/65 Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec 3

Water situation of Bangphra Reservoir (by Year)

Water volume in Bangphra Reservoir (MCM.)

Water Situation of Bangphra Reservoir

150

140

2004

2005

2006

2011

2015

2016

2018

2019

2020

2021

Capacity

Dead storage

URC - RID

LRC - RID

Average 2006-2021

2022

URC - RID

28 Jan 2022 101.571 MCM. 86.81 %

140

Average 2006-2021

130 120

120

Reservoir Capacity

MCM.

110 100

100

2

90 80

80

70 60

60

50 40

40

30 20

20

10 0

Minimum reservoir volume

.05 MCM.

LRC - RID

0

28/01/65

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

4 Dec

Water situation of Nongkho Reservoir (by Year)

Water volume in Nongkho Reservoir (MCM.)

Water Situation of Nongkho Reservoir

26

2004

2005

2011

2015

2016

2018

2019

2020

2021

Capacity

Dead storage

Normal useable volume

URC - RID

LRC - RID

Average 2006-2021

2022

25

24

Average 2006-2021

22 20

Reservoir Capacity 20

URC - RID

28 Jan 2022 20.5 MCM. 95.79 %

.4 MCM.

2

18

16 15

14

12 10

10

8 6 5

4 Normal useable volume MCM. Minimum reservoir volume MCM.

2 0

0

28/01/65

Jan

Feb

Mar

LRC - RID

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

5 Dec

Water situation of Nongplalai, Dokkrai and Klongyai Reservoirs Water volume in Dokkrai Nongplalai and Klongyai Reservoirs (MCM.)

Water Situation of Dokkrai Nongplalai and Klongyai Reservoirs

380 360 340 320 300 280 260 240 220 200 180 160 140 120 100 80 60 40 20 0

Maximum 2006-2021 2015 2019 Minimum volume LRC - RID

2004 2016 2020 Dead storage Average 2006-2021

2014 2018 Capacity URC - RID

URC - RID

28 Jan 2022 254.351 MCM. 92.41 %

Maximum 2006-2021 Average 2006-2021

350

2005 2017 2021 Increased Capacity 2022

Increased reservoir capacity (temporary) 318.13 MCM. 2

300

3 reservoirs total capacity

1

.25 MCM.

250

200

150

100

50

Minimum reservoir volume Dead storage 0

1

31

Jan

.5 MCM. 1

Feb

MCM. LRC - RID

31

Mar

30

Apr

30

May

29

Jun

29

Jul

28

Aug

27

Sep

27

Oct

26

Nov

26

Dec

Water situation of Dokkrai Reservoir (by Year) Water Situation of Dokkrai Reservoir 2004 2014 2018 Capacity LRC - RID

100

Water volume in Dokkrai Reservoir (MCM.)

100

90

90

80

80

2005 2015 2019 Dead storage Average 2006-2021

Average 2006-2021

2006 2016 2020 Increased Capacity 2022

2011 2017 2021 URC - RID

URC - RID

28 Jan 2022 66.975 MCM. 93.8 %

Increased reservoir capacity (temporary) 79.41 MCM.

Reservoir Capacity 71.4 MCM.

70

70

60

60

50

50

40

40

30

30

20

20

10

10

Minimum reservoir volume

0

0

28/01/65

Jan

Feb

Mar

MCM.

Apr

LRC- RID

May

Jun

Jul

Aug

Sep

Oct

Nov

7 Dec

Water situation of Nongplalai Reservoir (by Year)

Water volume in Nongplalai Reservoir (MCM.)

Water Situation of Nongplalai Reservoir 2004 2014 2018 Capacity LRC - RID

220

200

2005 2015 2019 Dead storage Average 2006-2021

Average 2006-2021

200

2006 2016 2020 Increased Capacity 2022

2011 2017 2021 URC - RID

URC - RID

28 Jan 2022 151.265 MCM. 92.38 %

Increased reservoir capacity (temporary) 187.62 MCM.

180

Reservoir Capacity

.75 MCM.

160 150

140 120 100

100

80

60 50

40 20

0

Minimum reservoir volume

.5 MCM. LRC - RID

0

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Water situation of Klongyai Reservoir (by Year)

Water volume in Klongyai Reservoir (MCM.)

Water Situation of Klongyai Reservoir 2006 2016 2020 Increased Capacity Average 2006-2021

55

50

Increased reservoir capacity (temporary) Reservoir Capacity

2014 2018 Capacity URC - RID

2015 2019 Dead storage LRC - RID

URC - RID

28 Jan 2022 36.111 MCM. 90.05 %

Average 2006-2021

50

45 40

2011 2017 2021 Lowest of tunnel 2022

.465 MCM.

.1 MCM.

40

35 30

30

25 20

20

Lowest water level that can be transferred through tunnel to Nongplalai Reservoir

15 10

.2 MCM.

Minimum reservoir volume .5 MCM.

10

5

0

LRC - RID 0

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Water situation of Prasae Reservoir

Water volume in Prasae Reservoir (MCM.)

Water Situation of Prasae Reservoir

360 340 320 300 280 260 240 220 200 180 160 140 120 100 80 60 40 20 0

350

Maximum 2006-2021

2005

2006

2015

2016

2017

2019

2020

2021

Capacity

Dead storage

URC - RID

LRC - RID

Average 2006-2021

2022

Maximum 2006-2021 Average 2006-2021

300

Reservoir Capacity

URC - RID

28 Jan 2022 256.02 MCM. 86.79 %

MCM.

250

200

150

100

50

Minimum reservoir volume

MCM. LRC - RID

0

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Summary of water shortage prevention and mitigation measures in Rayong and Chonburi Provinces 2021 Planned Water Volume (MCM) 2021

Measure JAN

FEB

MAR

APR

MAY

JUN

JUL

AUG

SEP

OCT

DEC

NOV

Total

1. Primary measures

1.1Water diversion via pumping from Prasae Reservoir Stop divert from Prasae-Nong Pla Lai because of the water volume in Nong Pla Lai reservoir reach over URC

Planned PS - KY Planned PS- NPL Actual PS-KY Actual PS-NPL

1.2 Divert Water from Bangpakong River + Private Pond

Planned Private Pond

1.6

0.45

-

3.05

-

6.20

-

6.30

-

1.68

1.86

21.77

5.80

-

0.45 3.05 6.20 6.29 5.75 1.86

-

-

-

1.59

-

-

-

-

-

0.07

Bangpakong

1.3 Divert Water from Klong Pra Ong Chaiyanuchit

Planned Actual

0.88

28 Dec 0.18

22.87

5.75

Planned

Actual

25 Dec 0.42 2.36 2.36

0.35

6.80

Bangpakong

Actual Private Pond

2.00

0.4

7.80

22.00

7.40

7 Jun

1.53 1.24 1.14 1.40 1.54 0.40

7.25 0.25

0.45

5.93

7.13

3.83

2 Dec

15.00 15.00 10.00 17 Nov 1.1 16.79 16.39 3.57

7.09

17.94

40.00 37.85

Summary of water shortage prevention and mitigation measures in Rayong and Chonburi Provinces 2022 Planned Water Volume (MCM) 2022

Measure JAN

FEB

2.00

2.00

MAR

APR

MAY

JUN

JUL

AUG

SEP

OCT

NOV

DEC

Total

4.00

8.00

8.00

8.00

8.00

40.00

8.00

8.5

1. Primary measures

1.1Water diversion via pumping from Prasae Reservoir

Planned PS - KY Planned PS- NPL Actual PS-KY Actual PS-NPL

1.2 Divert Water from Bangpakong River + Private Pond

Planned Private Pond

0.5

27 Jan 2.73

2.73

26 Jan 0.14

0.14

1.07

Planned

1.88

1.97

2.03

1.33

0.89

0.99 3.91

Bangpakong

6.73

6.17

6.14

11.56 22.95

Actual Private Pond

27 Jan 1.27

1.27

Actual

-

0.00

Bangpakong

1.3 Divert Water from Klong Pra Ong Chaiyanuchit

1.41

Planned Actual

7.00 7.00 14.00 14.00 14.00 14.00

-

70.00 0.00

Target Line and Reservoir Simulation in Chonburi

On 28 Jan 2022 Water Volume 155.74 MCM

155

Normal Status (All Clear)

155 Normal Status (All Clear) Prepare water reserve 130

Prepare water reserve 130 •

Surveillance of water scarcity

•

Divert water from Bang Pa Kong River and Pra Ong Chaiyanuchit (diversion will according to the water situation) Increase water diversion from Rayong (diversion will according to the water situation)

•

Water shortage warning Minimum storage volume15.05 MCM.

• •

Divert Water from Khlong Luang Ratchalothorn reservoir (diversion will according to the water situation) Consideration for another private pond Reduce water usage for various activities

155

Target Line and Reservoir Simulation in Rayong

On 28 Jan 2022 Water Volume 254.35 MCM or 92.41%

Normal Status (All Clear)

Normal Status (All Clear) 230

220

•

170

•

Surveillance of water scarcity •

Water shortage warning

220

• •

Divert water from Prasae reservoir via Prasae-Klong Yai pipeline and PrasaeNong Pla Lai pipeline (diversion will according to the water situation) Divert water from Wat La Harn Rai to Nong Pla Lai reservoir (diversion will according to the water situation) Divert water from Prasae reservoir via Prasae-Klong Yai pipeline and Prasae-Nong Pla Lai pipeline (Full efficiency) Divert water from Wat La Harn Rai to Nong Pla Lai reservoir (Full efficiency) Reduce water consumption for all activities

Minimum storage volume 31.70 MCM. 28/01/65

14

Target Line and Reservoir Simulation in Prasae

On 28 Jan 2022 Water Volume 256.02 MCM or 86.79%

Storage Volume 295.0 MCM

250

Normal Status (All Clear)

Prepare water reserve 160 Surveillance of water scarcity

Water shortage warning Minimum storage volume 20.0 MCM.

Normal Status (All Clear)

250

•

• •

250

Prepare water reserve 210

Divert water from Khlong Saphan canal to Prasae reservoir (diversion will according to the water situation) Divert water from Wang Ta Nod canal to Prasae reservoir (diversion will according to the water situation) decrease divert water from Prasae reservoir (diversion will according to the water situation)

• Reduce water consumption for all activities

THANK YOU