Page 138 - Slide 1

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104
Location : on left bank at Ban Nang Dad Khok.
508
sq.km.
WATER YEAR : 2012
CHI RIVER BASIN
Chi River at Ban Nang Dad Khok , Chaiyaphum (E.84)
Lat 16 - 09 - 08 N Long 101 - 35 - 07 E
Drainge Area
Amphoe
Nong Bua Daeng
Changwat
Chaiyaphum
Ban
Nang Dad Khok
Staff gage
+237.650 m. (MSL.)
B.M.- Highways Dept.
On left bank downstream at the footpath of the bridge.
Elevation
3-time daily readings at 06.00, 12.00 and 18.00 hours.
Arithmetic mean of 3 readings
2004 to date
Rating Operation
Period of Available Gage Records
Basis of Mean Daily Gage Height
Gage Reading Frequency
Zero Gage at Bottom
+246.755 m. (MSL.)
Type of Gage
Bench Mark
Location BM
2004 to date
-
2004 to date
Fairly stable.
Overbank flow starts at elevation +243.130 m.(MSL.), records are channel flow only.
Records fair. Stage-discharge relation defined by 27 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
239.40
239.40
239.66
239.45
240.05
240.82
240.14
239.66
239.57
239.44
239.44
239.37
2
239.39
239.40
239.60
239.45
239.86
240.60
240.17
239.66
239.57
239.44
239.43
239.37
3
239.39
239.43
239.52
239.45
239.76
242.90
240.58
239.66
239.57
239.44
239.42
239.36
4
239.39
239.47
239.48
239.45
239.71
242.57
241.11
239.65
239.57
239.43
239.41
239.36
5
239.38
239.48
239.48
239.45
239.61
242.82
240.45
239.65
239.57
239.43
239.41
239.36
6
239.38
239.47
239.52
239.48
239.56
242.25
240.91
239.65
239.56
239.43
239.41
239.35
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Gage Height in Meter (MSL.) Water Year April 1, 2012 to March 31, 2013
7
239.37
239.48
240.22
239.56
239.55
242.73
240.91
239.65
239.55
239.43
239.40
239.35
8
239.37
239.48
240.68
239.54
239.55
243.25
240.50
239.65
239.54
239.43
239.40
239.35
9
239.37
239.48
240.65
239.51
240.58
243.11
240.40
239.65
239.54
239.43
239.40
239.34
10
239.37
239.49
240.02
239.49
242.00
242.62
240.66
239.66
239.54
239.42
239.39
239.34
11
239.40
239.60
239.74
239.57
241.71
242.11
240.49
239.70
239.53
239.42
239.39
239.34
12
239.40
239.72
239.58
240.70
240.77
241.87
240.29
239.68
239.53
239.43
239.39
239.33
13
239.39
240.25
239.56
240.49
240.31
242.91
240.16
239.66
239.52
239.43
239.39
239.33
14
239.43
240.65
239.52
240.39
240.13
242.41
240.12
239.64
239.51
239.42
239.38
239.33
15
239.42
240.58
239.49
240.33
240.06
241.38
240.09
239.62
239.50
239.42
239.38
239.33
16
239.41
240.47
239.48
240.19
239.94
240.95
240.04
239.60
239.49
239.42
239.38
239.32
17
239.41
240.33
239.49
239.77
239.80
240.73
239.99
239.59
239.48
239.42
239.38
239.38
18
239.40
240.19
239.48
239.64
239.77
240.55
239.94
239.59
239.48
239.42
239.38
239.37
19
239.40
240.04
239.47
239.79
239.74
240.42
239.91
239.58
239.48
239.42
239.38
239.36
20
239.40
239.87
239.47
239.77
239.71
240.39
239.90
239.58
239.47
239.42
239.38
239.35
21
239.40
239.76
239.47
239.67
239.68
240.37
239.84
239.57
239.46
239.41
239.38
239.34
22
239.40
239.62
239.47
239.60
239.64
240.31
239.79
239.57
239.46
239.41
239.38
239.34
23
239.40
239.49
239.47
239.56
239.68
240.24
239.75
239.56
239.46
239.41
239.38
239.33
24
239.40
239.47
239.47
239.55
240.97
240.28
239.69
239.56
239.45
239.40
239.38
239.33
25
239.40
239.47
239.47
239.56
240.62
240.18
239.68
239.56
239.45
239.40
239.38
239.32
26
239.40
239.47
239.47
239.62
242.82
240.17
239.68
239.56
239.45
239.40
239.38
239.31
27
239.41
239.52
239.47
239.66
242.26
241.10
239.68
239.56
239.44
239.42
239.37
239.29
28
239.39
239.64
239.45
239.62
240.75
240.61
239.68
239.57
239.44
239.47
239.37
239.29
29
239.38
239.69
239.44
241.01
241.79
240.36
239.67
239.56
239.44
239.51
239.28
30
239.38
239.89
239.43
241.29
242.87
240.21
239.67
239.56
239.43
239.49
239.28
31
239.84
240.35
241.31
239.67
239.43
239.47
239.27
----------
--------------
Mean
239.39
239.75
239.62
239.84
240.47
241.37
240.11
239.61
239.50
239.43
239.39
239.33
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Max
239.43
240.65
240.68
241.29
242.87
243.25
241.11
239.70
239.57
239.51
239.44
239.38
243.25
Min
239.37
239.40
239.43
239.45
239.55
240.17
239.67
239.56
239.43
239.40
239.37
239.27
239.27
243.35
m. (MSL.) ,
237.65
m. (MSL.) ,
River Bed 238.44
m. (MSL)
243.12
m. (MSL.) ,
243.59
m. (MSL.) ,
Drainage Area 508 Square Kilometers
at 17.00 Hours, on Sep 8, 2012
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Right Bank Elevation
Left Bank Elevation