Basic HTML Version
422
Location : on left bank at Wat Pho Ngam about 1.5 kilometers downstream from Chao Phraya Diversion Dam
117,187 sq.km.
WATER YEAR : 2011
CHAO PHRAYA RIVER BASIN
Chao Phraya River at Ban Bang Luang, Chai Nat (C.13)
Lat 15 - 10 - 07 N Long 100 - 11 - 48 E
Drainge Area
Amphoe
Sanphaya
Changwat
Chai Nat
Ban
Bang Luang
Water - stage recorder
+0.000 m. (MSL.)
B.M.-H.D.
B.M.2 - on right bank about 400 meters from the B.M.1
Elevation
Recording
Arithmetic means of 24 readings
1947 to date
Rating Operation
Period of Available Gage Records
Basis of Mean Daily Gage Height
Gage Reading Frequency
Zero Gage at Bottom
+16.310 m. (MSL.)
Type of Gage
Bench Mark
Location BM
1953 - 1962, 1965 - 1968, 1972 - 1975 to date
-
1953 - 1962, 1965 - 1968, 1972 - 1975 to date
Fairly stable.
Overbank flow starts at elevation +16.440 m.(MSL.), records are channel flow only.
Records good. Flow regulated by Chao Phraya Dam above gage site.
Stage-discharge relation defined by 42 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
6.22
7.61
11.82
8.69
12.42
15.11
17.49
16.93
10.75
8.51
9.94
10.23
2
6.41
7.82
11.89
8.93
12.45
15.26
17.51
16.90
10.16
8.71
9.94
9.97
3
6.42
7.89
11.93
9.03
12.49
15.31
17.49
16.86
9.57
8.61
10.02
9.64
4
6.51
8.02
11.79
9.12
12.63
15.37
17.53
16.81
9.22
8.46
10.38
9.55
5
6.48
8.10
11.68
9.99
12.88
15.39
17.58
16.70
8.83
8.09
10.32
9.54
6
6.42
8.31
11.77
11.00
13.06
15.62
17.59
16.61
8.76
8.13
10.47
9.55
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Gage Height in Meter (MSL.) Water Year April 1, 2011 to March 31, 2012
7
6.35
7.91
11.93
11.48
12.98
15.81
17.59
16.53
8.65
8.49
10.56
9.49
8
6.19
7.96
12.36
11.44
12.32
15.94
17.62
16.42
8.04
8.84
10.55
9.57
9
6.03
8.52
12.69
11.01
12.52
16.07
17.64
16.28
7.52
9.21
10.56
9.50
10
6.00
8.99
12.50
10.41
12.44
16.21
17.64
16.16
7.72
9.46
10.43
9.56
11
6.00
8.96
12.44
9.86
12.63
16.43
17.63
16.06
7.87
9.57
10.53
9.68
12
6.00
8.57
12.22
9.57
12.77
16.76
17.61
15.94
7.99
9.67
10.54
9.70
13
6.00
8.04
11.81
10.02
12.86
17.07
17.59
15.81
7.93
9.35
10.66
9.72
14
6.00
7.86
11.34
9.99
12.94
17.29
17.57
15.66
7.69
9.04
10.60
9.87
15
6.00
8.20
10.84
10.14
13.06
17.51
17.56
15.32
7.77
9.14
10.72
9.82
16
6.00
9.05
10.20
10.67
13.17
17.71
17.55
15.09
8.18
9.20
10.54
9.78
17
6.00
9.98
9.62
11.17
13.47
17.83
17.55
14.87
8.47
9.06
10.49
9.65
18
6.00
10.84
9.19
11.56
13.76
17.87
17.55
14.69
8.80
9.34
10.44
9.55
19
6.01
11.28
8.88
11.49
13.97
17.88
17.54
14.47
8.89
9.23
10.49
9.35
20
6.23
11.25
8.70
11.27
14.17
17.91
17.50
14.33
9.17
9.24
10.53
8.92
21
6.29
11.10
8.65
11.36
14.17
17.91
17.47
14.22
8.90
9.31
10.61
8.39
22
6.38
10.87
8.84
11.61
14.14
17.89
17.44
13.94
8.67
9.55
10.61
7.50
23
6.41
10.85
8.93
12.06
14.16
17.87
17.40
13.74
8.15
9.62
10.52
6.79
24
6.48
10.48
8.84
12.04
14.06
17.87
17.35
13.48
7.96
9.80
10.44
6.57
25
6.48
10.25
8.72
12.17
13.97
17.85
17.30
13.13
7.87
9.61
10.45
6.45
26
6.46
9.98
8.67
12.43
14.01
17.82
17.26
12.79
7.82
9.66
10.41
6.26
27
6.47
10.30
8.53
12.61
14.06
17.77
17.19
12.39
7.88
9.78
10.38
6.17
28
6.75
10.87
8.42
12.66
14.12
17.70
17.15
12.05
7.51
9.80
10.30
5.96
29
7.57
11.01
8.36
12.63
14.15
17.66
17.12
11.67
7.51
9.92
10.20
5.86
30
7.57
11.22
8.34
12.55
14.49
17.60
17.07
11.27
8.06
9.67
5.85
31
11.61
12.42
14.88
16.98
8.36
9.91
5.85
----------
--------------
Mean
6.34
9.47
10.40
11.01
13.39
16.94
17.45
14.90
8.41
9.23
10.44
8.53
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Max
7.57
11.61
12.69
12.66
14.88
17.91
17.64
16.93
10.75
9.92
10.72
10.23
17.91
Min
6.00
7.61
8.34
8.69
12.32
15.11
16.98
11.27
7.51
8.09
9.94
5.85
5.85
17.92
m. (MSL.) ,
0.00
m. (MSL.) ,
River Bed 1.56
m. (MSL)
16.78
m. (MSL.) ,
16.43
m. (MSL.) ,
Drainage Area 117187 Square Kilometers
at 24.00 Hours , on Sep 21 , 2011
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Right Bank Elevation
Left Bank Elevation