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WATER YEAR : 2013
CHAO PHRAYA RIVER BASIN
Chao Phraya River at Ban Pom, Phra Nakhon Si Ayutthaya (C.35)
Lat 14 - 22 - 02 N Long 100 - 31 - 58 E
Locat on : on r g t an at Ban Pom
Amphoe
Phra Nakhon Si Ayutthaya
Changwat
Phra Nakhon Si Ayutthaya
Flood Plain
Water - stage recorder
+0.000 m. (MSL.)
B.M.-H.D.
On right bank near the gage site.
Elevation
+6.300 m. (MSL.)
Recording
Ban
Pom
Gage Reading Frequency
Zero Gage at Bottom
Type of Gage
Bench Mark
Location BM
Drainge Area
Arithmetic mean of 24 readings
1997 to date
1997 to date
-
1998 to date
Fairly stable.
No overbank flow.
Basis of Mean Daily Gage Height
Rated by Current Meter
Stability of Channel Regimes
Overbank Flow Conditions
Rating Operation
Period of Rating
Rated by Flot
Period of Available Gage Records
Records good. Stage-discharge relation defined by 49 discharge measurements made in 2013.
Date
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Annual
----------
-----------------
1
0.28
0.31
0.02
0.02
0.08
0.54
4.28
2.87
0.55
0.86
0.64
0.66
2
0.29
0.25
0.03
0.08
0.00
0.50
4.34
2.76
0.47
0.91
0.57
0.59
3
0.34
0.18
0.06
0.15
0.07
0.44
4.37
2.60
0.61
0.86
0.55
0.61
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Gage Height in Meter (MSL.) Water Year April 1, 2013 to March 31, 2014
General Description
4
0.38
0.14
0.17
0.03
0.12
0.40
4.39
2.46
0.69
0.74
0.53
0.61
5
0.26
0.09
0.24
0.11
0.16
0.44
4.38
2.30
0.66
0.71
0.56
0.60
6
0.11
0.16
0.20
0.14
0.04
0.58
4.39
2.18
0.74
0.89
0.58
0.63
7
0.03
0.31
0.13
0.22
-0.01
0.80
4.40
2.03
0.76
0.78
0.52
0.68
8
0.09
0.23
0.16
0.16
0.11
0.97
4.39
1.89
0.60
0.51
0.64
0.68
9
0.18
0.28
0.14
0.17
0.25
1.23
4.35
1.75
0.49
0.59
0.59
0.67
10
0.20
0.24
0.14
0.14
0.26
1.29
4.29
1.65
0.37
0.82
0.60
0.73
11
0.23
0.24
0.12
0.15
0.40
1.36
4.21
1.48
0.42
0.83
0.54
0.76
12
0 34
0 29
0 15
0 10
0 29
1 65
4 10
1 32
0 33
0 66
0 61
0 64
.
.
.
.
.
.
.
.
.
.
.
.
13
0.33
0.23
0.13
0.06
0.27
1.84
4.00
1.23
0.49
0.65
0.73
0.59
14
0.35
0.19
0.17
0.07
0.53
1.96
3.88
1.13
0.53
0.73
0.67
0.53
15
0.33
0.17
0.19
0.16
1.07
2.24
3.76
1.06
0.51
0.75
0.79
0.61
16
0.35
0.15
0.25
0.23
1.26
2.50
3.68
0.88
0.56
0.72
0.90
0.77
17
0.35
0.11
0.60
0.21
1.37
2.78
3.67
0.92
0.41
0.59
0.75
0.69
18
0.18
0.13
0.67
0.15
1.55
2.99
3.64
0.85
0.31
0.58
0.66
0.68
19
0.11
0.05
0.67
0.14
1.52
3.16
3.57
0.84
0.46
0.70
0.61
0.72
20
0.15
0.03
0.46
0.10
1.37
3.43
3.54
0.87
0.59
0.61
0.60
0.65
21
0.11
0.03
0.33
0.17
1.19
3.74
3.62
0.73
0.48
0.47
0.79
0.61
22
0.10
0.10
0.34
0.13
1.05
3.97
3.65
0.74
0.31
0.50
0.70
0.71
23
0.12
0.11
0.36
0.19
0.87
4.05
3.63
0.70
0.45
0.54
0.71
0.78
24
0.13
0.13
0.45
0.17
0.75
4.07
3.58
0.65
0.37
0.52
0.83
0.77
25
0.18
0.15
0.47
0.16
0.68
4.12
3.48
0.47
0.40
0.51
0.80
0.80
26
0.20
0.16
0.46
0.16
0.58
4.14
3.38
0.56
0.44
0.60
0.69
0.83
27
0.23
0.18
0.43
0.11
0.45
4.14
3.28
0.63
0.27
0.62
0.71
0.72
28
0.25
0.17
0.33
0.09
0.52
4.15
3.24
0.41
0.52
0.66
0.70
0.70
29
0.33
0.14
0.26
0.09
0.56
4.16
3.19
0.40
0.63
0.63
0.66
30
0.33
0.12
0.12
0.06
0.56
4.27
3.07
0.53
0.59
0.64
0.62
31
0.10
0.07
0.58
2.97
0.55
0.66
0.67
----------
--------------
Mean
0.23
0.17
0.28
0.13
0.60
2.40
3.83
1.30
0.50
0.67
0.66
0.68
Max
0.38
0.31
0.67
0.23
1.55
4.27
4.40
2.87
0.76
0.91
0.90
0.83
4.40
Min
0.03
0.03
0.02
0.02
-0.01
0.40
2.97
0.40
0.27
0.47
0.52
0.53
-0.01
4.41
m. (MSL.) ,
0.00
m. (MSL.) ,
River Bed -8.57
m. (MSL.)
4.69
m. (MSL.) ,
6.30
m. (MSL.) ,
Drainage Area
Square Kilometers
at 06.00 Hours , on Oct 4 , 2013
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Right Bank Elevation
Left Bank Elevation
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