Page 566 - Slide 1

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532
Location : on left bank about 50 meters from the top staff gage.
126
sq.km.
WATER YEAR : 2012
BANG PAKONG RIVER BASIN
Upper Khlong Ban Na at Ban Cha Om , Saraburi (Ny.6)
Lat 14 - 24 - 34 N Long 101 - 07 - 30 E
Amphoe
Kaeng Khoi
Changwat
Saraburi
Ban
Cha Om
Drainge Area
Staff gage
+29.600 m. (MSL.)
B.M.-H.D.
On left bank about 50 meters from the top staff gage.
Elevation
3-time daily readings at 06.00, 12.00 and 18.00 hours.
Arithmetic mean of 3 readings
1988 to date
+34.960 m. (MSL.)
Bench Mark
Type of Gage
Rating Operation
Period of Available Gage Records
Location BM
Basis of Mean Daily Gage Height
Gage Reading Frequency
Zero Gage at Bottom
1988 to date
-
1988 to date
Fairly stable.
No overbank flow.
Records good. Stage-discharge relation defined by 20 discharge measurements made in 2012.
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
30.79
30.77
31.03
31.34
31.28
31.57
31.37
31.14
30.96
31.14
30.62
30.50
2
30.79
30.77
31.03
31.34
31.23
31.51
31.51
31.12
30.91
31.12
30.62
30.50
3
30.79
30.77
31.03
31.58
31.18
31.60
31.52
31.12
30.89
31.12
30.62
30.50
4
30.79
30.77
31.03
32.13
31.13
31.55
31.45
31.10
30.84
31.10
30.62
30.50
5
30.79
30.77
31.03
31.98
31.10
31.46
31.40
31.10
30.80
31.10
30.62
30.50
6
30.79
30.77
31.03
31.57
31.14
31.49
31.33
31.09
30.80
31.09
30.62
30.50
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Gage Height in Meter (MSL.) Water Year April 1, 2012 to March 31, 2013
7
30.79
30.77
31.03
31.37
31.10
31.84
31.28
31.08
30.80
31.08
30.60
30.50
8
30.79
30.77
31.03
31.31
31.09
31.65
31.26
31.08
30.80
31.08
30.60
30.50
9
30.79
30.77
31.03
31.25
31.06
31.49
31.26
31.08
30.80
31.08
30.60
30.50
10
30.79
30.77
31.03
31.18
31.06
31.42
31.28
31.06
30.80
31.06
30.60
30.50
11
30.78
30.77
31.03
31.22
31.04
31.52
31.28
31.06
30.78
31.06
30.59
30.50
12
30.78
30.77
31.03
31.22
31.05
31.42
31.23
31.06
30.78
31.06
30.59
30.50
13
30.78
30.77
31.03
31.18
31.05
31.35
31.22
31.06
30.78
31.06
30.58
30.50
14
30.78
30.77
31.03
31.14
31.02
31.50
31.20
31.04
30.78
31.04
30.58
30.50
15
30.78
30.77
31.03
31.29
31.00
31.53
31.39
31.04
30.78
31.04
30.58
30.50
16
30.78
30.77
31.03
31.39
31.00
31.62
31.32
31.02
30.76
31.02
30.57
30.50
17
30.78
30.77
31.03
31.26
31.13
32.00
31.26
31.02
30.76
31.02
30.57
30.50
18
30.78
30.77
31.03
31.32
31.10
31.71
31.22
31.02
30.76
31.02
30.56
30.50
19
30.78
30.77
31.03
31.22
31.10
31.95
31.19
31.00
30.75
31.00
30.56
30.50
20
30.78
30.77
31.03
31.17
31.59
31.74
31.16
31.00
30.75
31.00
30.55
30.50
21
30.78
30.77
31.03
31.14
31.38
31.60
31.14
31.00
30.74
31.00
30.55
30.48
22
30.78
30.77
31.03
31.12
31.27
31.56
31.12
31.00
30.73
31.00
30.54
30.48
23
30.78
30.77
31.02
31.10
31.26
31.49
31.10
31.00
30.73
31.00
30.54
30.48
24
30.78
30.77
31.02
31.05
31.39
31.41
31.10
31.00
30.72
31.00
30.54
30.48
25
30.78
30.77
31.02
31.04
31.32
31.35
31.42
31.41
30.71
31.41
30.52
30.48
26
30.78
30.77
31.01
31.04
31.42
31.33
31.31
31.44
30.70
31.44
30.52
30.48
27
30.78
30.77
31.01
31.34
31.75
31.49
31.23
31.27
30.69
31.27
30.50
30.48
28
30.78
30.77
31.00
31.26
31.71
31.46
31.20
31.20
30.69
31.20
30.50
30.48
29
30.78
30.77
31.00
31.32
31.96
31.48
31.18
31.12
30.68
31.12
30.48
30
30.78
30.77
31.00
31.54
31.69
31.41
31.17
31.08
30.68
31.05
30.48
31
30.77
31.36
31.69
31.21
30.67
31.06
30.48
----------
--------------
Mean
30.78
30.77
31.02
31.32
31.27
31.55
31.27
31.09
30.77
31.09
30.57
30.49
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Max
30.79
30.77
31.03
32.13
31.96
32.00
31.52
31.44
30.96
31.44
30.62
30.50
32.13
Min
30.78
30.77
31.00
31.04
31.00
31.33
31.10
31.00
30.67
31.00
30.50
30.48
30.48
32.30
m. (MSL.) ,
29.60
m. (MSL.) ,
River Bed 30.04
m. (MSL.)
34.82
m. (MSL.) ,
34.96
m. (MSL.) ,
Drainage Area 126 Square Kilometers
at 06.00 Hours , on Jul 4 , 2012
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Left Bank Elevation
Right Bank Elevation