Basic HTML Version
426
Location : on right bank at the bridge.
Amphoe
Bang Ban
Changwat
Phra Nakhon Si Ayutthaya
Flood Plain
Ban
Bang Luang Dod
WATER YEAR : 2011
CHAO PHRAYA RIVER BASIN
Chao Phraya River at Ban Bang Luang Dod, Phra Nakhon Si Ayutthaya (C.36)
Lat 14 - 24 - 50 N Long 100 - 26 - 37 E
Drainge Area
Water - stage recorder
+0.000 m. (MSL.)
B.M.-H.D.
On right bank near the top staff gage
Elevation
Recording
Arithmetic means of 24 readings
1982 to date
Basis of Mean Daily Gage Height
Gage Reading Frequency
Zero Gage at Bottom
+7.500 m. (MSL.)
Type of Gage
Bench Mark
Location BM
Rating Operation
Period of Available Gage Records
1983 to date
-
1983 to date
Fairly stable because of backwater effect.
No overbank flow.
Records good. Stage-discharge relation defined by 31 discharge measurements made in 2011.
Rated by Current Meter
Stability of Channel Regimes
Overbank Flow Conditions
General Description
Period of Rating
Rated by Flot
Date
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Annual
----------
-----------------
1
0.30
0.48
3.23
1.13
3.91
5.64
6.38
6.21
4.15
1.69
2.06
2.00
2
0.38
0.46
3.43
1.43
3.95
5.77
6.38
6.18
3.91
1.73
2.05
1.94
3
0.37
0.49
3.51
1.38
3.99
5.86
6.40
6.16
3.67
1.76
2.10
1.90
4
0.38
0.54
3.54
1.49
4.03
5.91
6.44
6.14
3.45
1.69
2.22
1.80
5
0.43
0.61
3.44
1.57
4.13
5.95
6.48
6.12
3.25
1.56
2.40
1.71
6
0.48
0.63
3.40
2.15
4.22
5.99
6.51
6.11
3.10
1.49
2.49
1.62
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Gage Height in Meter (MSL.) Water Year April 1, 2011 to March 31, 2012
7
0.44
0.70
3.44
2.72
4.22
6.06
6.53
6.10
3.01
1.45
2.56
1.59
8
0.36
0.62
3.54
2.97
4.04
6.13
6.54
6.08
2.90
1.56
2.58
1.54
9
0.40
0.72
3.76
2.93
3.78
6.20
6.54
6.05
2.72
1.73
2.58
1.59
10
0.51
0.92
3.85
2.64
3.74
6.29
6.54
6.03
2.58
1.89
2.53
1.58
11
0.45
1.01
3.75
2.26
3.76
6.34
6.53
6.00
2.52
1.98
2.49
1.66
12
0.50
1.05
3.66
1.96
3.85
6.40
6.51
5.97
2.50
2.09
2.45
1.72
13
0.46
0.98
3.47
1.84
3.97
6.44
6.49
5.94
2.46
2.01
2.45
1.82
14
0.35
0.84
3.21
1.95
4.06
6.44
6.49
5.89
2.36
1.86
2.43
1.90
15
0.19
0.93
2.95
1.98
4.15
6.42
6.47
5.83
2.27
1.76
2.38
1.97
16
0.14
1.13
2.63
2.13
4.24
6.39
6.48
5.74
2.25
1.76
2.35
1.86
17
0.12
1.45
2.27
2.41
4.38
6.37
6.46
5.66
2.29
1.70
2.30
1.82
18
0.17
1.97
1.95
2.76
4.59
6.35
6.45
5.59
2.34
1.71
2.22
1.75
19
0.21
2.51
1.63
2.98
4.77
6.34
6.42
5.52
2.36
1.74
2.22
1.59
20
0.21
2.83
1.39
2.92
4.94
6.34
6.39
5.44
2.36
1.70
2.17
1.43
21
0.30
2.87
1.26
2.85
5.04
6.34
6.38
5.40
2.33
1.71
2.23
1.14
22
0.43
2.80
1.20
2.91
5.09
6.34
6.37
5.31
2.23
1.77
2.27
0.84
23
0.46
2.66
1.22
3.12
5.10
6.35
6.35
5.24
2.13
1.88
2.27
0.62
24
0.52
2.55
1.19
3.31
5.11
6.37
6.34
5.14
2.01
1.91
2.25
0.43
25
0.59
2.32
1.15
3.38
5.05
6.38
6.33
5.01
1.93
1.99
2.21
0.39
26
0.59
2.16
1.13
3.51
5.02
6.40
6.32
4.89
1.88
2.06
2.16
0.49
27
0.46
2.11
1.10
3.69
5.03
6.41
6.31
4.76
1.82
2.08
2.15
0.53
28
0.29
2.34
1.03
3.82
5.06
6.40
6.29
4.63
1.71
2.05
2.13
0.46
29
0.27
2.62
0.93
3.92
5.11
6.39
6.28
4.49
1.61
2.02
2.03
0.53
30
0.27
2.75
0.95
3.94
5.19
6.38
6.25
4.33
1.58
2.05
0.40
31
2.95
3.90
5.40
6.23
1.63
2.03
0.35
----------
--------------
Mean
0.37
1.58
2.44
2.64
4.48
6.25
6.42
5.60
2.49
1.82
2.30
1.32
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Max
0.59
2.95
3.85
3.94
5.40
6.44
6.54
6.21
4.15
2.09
2.58
2.00
6.54
Min
0.12
0.46
0.93
1.13
3.74
5.64
6.23
4.33
1.58
1.45
2.03
0.35
0.12
6.56
m. (MSL.) ,
0.00
m. (MSL.) ,
River Bed -5.09
m. (MSL)
7.05
m. (MSL.) ,
7.68
m. (MSL.) ,
Drainage Area
Square Kilometers
at 05.00 Hours , on Oct 10 , 2011
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Right Bank Elevation
Left Bank Elevation