558
Location : on right bank near the highway bridge, Tambon Nong Bon.
58
sq.km.
Drainge Area
WATER YEAR : 2012
EAST COAST - GULF BASIN
Khlong Aeng at Ban Nong Bon , Trat (Z.45)
Lat 12 - 36 - 58 N Long 102 - 28 - 42 E
Amphoe
Bo Rai
Changwat
Trat
Ban
Nong Bon
Water - stage recorder
+30.000 m. (MSL.)
B.M.-H.D.
On right bank about 15 meters from the top staff gage.
Elevation
Recording
Arithmetic mean of 24 readings
1999 to date
Rating Operation
Period of Available Gage Records
Location BM
Basis of Mean Daily Gage Height
Gage Reading Frequency
Zero Gage at Bottom
+36.550 m. (MSL.)
Bench Mark
Type of Gage
1999 to date
-
1999 to date
Fairly stable.
No overbank flow.
Records good. Stage-discharge relation defined by 15 discharge measurements made in 2012.
Period of Rating
Rated by Flot
Rated by Current Meter
Stability of Channel Regimes
Overbank Flow Conditions
General Description
Date
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Annual
----------
-----------------
1
30.98
31.05
31.25
31.39
31.69
31.16
31.45
31.14
31.10
30.98
30.93
30.89
2
30.99
31.04
31.42
31.58
32.30
31.26
31.48
31.15
31.09
30.98
30.93
30.88
3
31.04
31.05
31.44
31.38
31.56
31.40
31.38
31.20
31.07
30.98
30.93
30.88
4
31.04
31.06
31.51
31.47
31.37
31.66
31.44
31.26
31.06
30.98
30.92
30.88
5
30.98
31.06
31.27
31.34
31.30
31.78
31.43
31.22
31.06
30.97
30.92
30.87
6
31.03
31.06
31.28
31.39
31.26
32.04
31.76
31.25
31.05
30.97
30.92
30.87
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Gage Height in Meter (MSL.) Water Year April 1, 2012 to March 31, 2013
7
31.01
31.38
31.60
31.43
31.28
31.84
31.87
31.22
31.05
30.97
30.92
30.87
8
31.03
31.62
31.52
31.49
31.39
31.36
31.82
31.20
31.04
30.96
30.91
30.87
9
31.04
31.57
31.57
31.43
31.43
31.40
31.71
31.20
31.03
30.96
30.91
30.87
10
31.03
31.57
31.66
31.53
31.38
31.28
31.41
31.21
31.04
30.96
30.91
30.87
11
31.04
31.07
31.57
31.49
31.25
31.35
31.35
31.15
31.03
30.95
30.91
30.86
12
31.04
31.11
31.53
31.46
31.26
31.25
31.33
31.10
31.03
30.95
30.91
30.86
13
31.07
32.31
31.54
31.13
31.23
31.17
31.37
31.22
31.02
30.95
30.90
30.86
14
31.07
32.01
31.54
31.41
31.20
31.86
31.30
31.18
31.02
30.95
30.90
30.86
15
31.05
31.71
31.33
31.33
31.17
31.91
31.38
31.19
31.03
30.95
30.90
30.86
16
31.04
31.61
31.41
31.29
31.23
31.72
31.58
31.17
31.19
30.95
30.90
30.85
17
31.08
31.83
31.53
31.23
31.30
31.81
31.30
31.14
31.15
30.95
30.90
30.85
18
31.08
31.97
31.52
31.25
31.33
31.81
31.34
31.23
31.13
30.95
30.90
30.85
19
31.04
31.87
31.43
31.48
31.30
31.69
31.32
31.23
31.14
30.94
30.90
30.85
20
31.05
31.64
31.40
31.37
31.22
32.51
31.27
31.25
31.15
30.94
30.90
30.85
21
31.05
31.28
31.40
31.23
31.18
31.98
31.26
31.26
31.16
30.94
30.90
30.84
22
31.04
31.46
31.35
31.15
31.23
31.41
31.28
31.22
31.17
30.94
30.90
30.84
23
31.06
31.49
31.23
31.13
31.31
31.52
31.25
31.20
31.16
30.94
30.90
30.84
24
31.04
31.64
31.13
31.18
31.25
32.45
31.15
31.22
31.15
30.94
30.89
30.84
25
31.05
32.10
31.11
31.53
31.36
32.26
31.18
31.17
31.14
30.94
30.89
30.84
26
31.03
32.36
30.95
31.55
31.60
31.41
31.16
31.11
31.15
30.94
30.89
30.84
27
31.04
32.23
31.10
31.35
32.02
32.10
31.21
31.09
31.16
30.94
30.89
30.84
28
31.05
32.42
31.18
31.56
31.85
32.20
31.14
31.13
31.15
30.93
30.89
30.84
29
31.05
32.37
31.16
31.37
31.59
31.63
31.15
31.22
31.09
30.93
30.84
30
31.05
31.79
30.95
31.65
31.35
31.51
31.18
31.17
31.02
30.93
30.84
31
32.30
31.59
31.17
31.15
30.98
30.93
30.84
----------
--------------
Mean
31.04
31.65
31.36
31.39
31.40
31.69
31.37
31.19
31.09
30.95
30.91
30.86
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Max
31.08
32.42
31.66
31.65
32.30
32.51
31.87
31.26
31.19
30.98
30.93
30.89
32.51
Min
30.98
31.04
30.95
31.13
31.17
31.16
31.14
31.09
30.98
30.93
30.89
30.84
30.84
33.20
m. (MSL.) ,
30.00
m. (MSL.) ,
River Bed 29.32
m. (MSL.)
35.29
m. (MSL.) ,
35.30
m. (MSL.) ,
Drainage Area
58
Square Kilometers
at 18.00 Hours, on Sep 24, 2012
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Left Bank Elevation
Right Bank Elevation