On 8 Apr 2022 11/04/65
1
Overview of water situation in Rayong-Chonburi area on 8 Apr 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
93.16
19.49
72.51
123.65
30.55
216.77
80%
91%
102%
76%
76%
73%
81.11
18.49
69.51
110.15
27.55
196.77
0.212
0.573
0.181
P5
Inflow into reservoir (MCM) (On 7 Apr 2022)
93.16
Bang Phra res. P6
19.49
Nong Kho res. P7
71.61
Rayong
0.966
Water volume compared to previous week (-decrease, +increase) (MCM) Total water volume in each area
-1.78
-0.56
-0.67
-6.36
112.65 MCM (81.4%)
226.7 MCM (82.36%)
72.51
30.55
216.77
Khlong Yai res. 123.65 Nong Pla Lai res.
Dok Krai res.
P8
P12
P11
P9
Prasae res.
P
P15
P10
XX
XX XX
P13
195.81
Ref: Royal Irrigation Department
-1.49 -3.87
-2.34
Ref: water situation from RID on 18 Mar 2022
34.84
-4.20
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
8 Apr 2022 112.653 MCM. 81.4 %
2 Reservoirs total capacity 138.4 MCM. 2
120
100
1
80
60
40
20
Minimum reservoir volume 13.05 MCM. LRC - RID
0
11/04/65 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
8 Apr 2022 93.163 MCM. 79.63 %
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
11/04/65
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
8 Apr 2022 19.49 MCM. 91.07 %
.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
11/04/65
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
8 Apr 2022 226.702 MCM. 82.36 %
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
8 Apr 2022 72.507 MCM. 101.55 %
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
11/04/65
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
8 Apr 2022 123.649 MCM. 75.51 %
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
8 Apr 2022 30.546 MCM. 76.17 %
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
8 Apr 2022 216.77 MCM. 73.48 %
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 2022 Planned Water Volume (MCM) 2022
Measure JAN
FEB
2.00
2.00
0.14
0.21
MAR
APR
MAY
JUN
JUL
AUG
5.00
5.00
5.00
5.00
5.00
1.00
1.00
1.00
0.15
0.15
SEP
OCT
NOV
DEC
Total
8.00
37.00
8.00
12.25
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
0.15
0.15
0.15
27 Feb 3.05 2.10
5.15
7 Apr 0.14 0.21 0.66 0.36
1.37
1.49 1.70 1.95 2.10 1.99 1.30 0.59
Planned
0.78
Bangpakong
Actual Private Pond
0.15
0.83 6.01
6.98
5.32
4.00
7 Apr 1.49 1.70 1.94 0.47
0.00
Bangpakong
Planned
23.08
5.60
Actual
1.3 Klong Saphan reverse KlongSaphan pumping station
11.95
2.00
2.00
4.00
Actual
KlongSaphan
1.4 Divert Water from Klong Pra Ong Chaiyanuchit
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 8 Apr 2022 Water Volume 145.89 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 8 Apr 2022 Water Volume 226.70 MCM or 82.36%
Normal Status (All Clear) 220
230
170
• •
Surveillance of water scarcity •
Water shortage warning
Normal Status (All Clear)
• •
220
170
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. 11/04/65
13
Target Line and Reservoir Simulation in Prasae
On 8 Apr 2022 Water Volume 216.77 MCM or 73.48%
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.
250
Normal Status (All Clear)
250
160Prepare water reserve
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
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