Basic HTML Version
84
Location : on right bank at Ban Tha Mao.
13,638 sq.km.
WATER YEAR : 2014
CHI RIVER BASIN
Lam Nam Phong at Ban Tha Mao , Khon Kaen (E.22B)
Lat 16 - 39 - 13 N Long 102 - 49 - 39 E
Drainge Area
Amphoe
Nam Phong
Changwat
Khon Kaen
Ban
Tha Mao
Staff gage
+150.920 m. (MSL.)
B.M.- Highways Dept.
On left bank 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
1965 to date
Rating Operation
Period of Available Gage Records
Basis of Mean Daily Gage Height
Gage Reading Frequency
Zero Gage at Bottom
+163.911 m. (MSL.)
Type of Gage
Bench Mark
Location BM
1966 - 1972 , 1982 - 1987 , 1992 to date
-
1966 - 1972 , 1982 - 1987 , 1992 to date
Rather unstable.
No overbank flow.
Records fair. Flow regulated by Ubonrat Dam about 35 kilometers above gage site
and Nong Wai weir situated about 5 kilometers above gage site.
Stage-discharge relation defined by 21 discharge measurements made in 2014.
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
151.96
152.14
151.89
151.62
152.21
153.57
151.51
151.11
151.26
151.60
151.65
151.49
2
151.97
152.03
151.97
151.65
151.99
153.63
151.36
151.06
151.28
151.61
151.65
151.42
3
151.92
152.48
152.08
151.72
151.67
153.89
151.29
151.05
151.28
151.56
151.64
151.42
4
151.90
153.09
151.95
151.68
151.42
153.91
151.27
151.04
151.27
151.49
151.62
151.42
5
152.09
152.90
151.64
151.53
151.50
153.89
151.36
151.06
151.25
151.45
151.64
151.42
6
152.17
152.70
151.72
151.45
151.46
153.94
151.30
151.05
151.25
151.45
151.67
151.42
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Gage Height in Meter (MSL.) Water Year April 1, 2014 to March 31, 2015
7
152.23
152.62
151.75
151.52
151.42
153.89
151.19
151.03
151.26
151.48
151.67
151.42
8
152.32
152.34
151.82
151.63
151.43
153.87
151.10
151.08
151.28
151.52
151.67
151.42
9
152.26
151.70
151.78
152.08
151.42
153.44
151.09
151.14
151.32
151.53
151.67
151.42
10
152.00
151.77
151.67
152.20
151.41
152.68
151.08
151.27
151.45
151.49
151.66
151.42
11
152.02
152.03
151.62
151.84
151.37
151.88
151.10
151.43
151.56
151.55
151.62
151.42
12
152.22
152.07
151.53
151.60
151.36
151.44
151.09
151.46
151.53
151.58
151.60
151.42
13
152.32
152.09
151.52
151.79
151.37
151.42
151.11
151.48
151.47
151.60
151.60
151.42
14
152.47
152.26
151.52
152.15
151.34
151.52
151.13
151.46
151.45
151.60
151.60
151.42
15
152.53
152.60
151.52
152.46
151.38
151.52
151.10
151.44
151.45
151.59
151.60
151.42
16
152.58
152.63
151.54
152.16
151.63
151.45
151.10
151.42
151.45
151.57
151.58
151.42
17
152.63
152.66
151.56
152.34
151.88
151.28
151.08
151.40
151.45
151.55
151.55
151.42
18
152.59
152.62
151.57
153.05
151.78
151.22
151.08
151.40
151.45
151.52
151.55
151.42
19
152.45
152.65
151.56
153.12
151.62
151.23
151.08
151.39
151.44
151.52
151.54
151.57
20
152.32
152.75
151.51
152.96
151.51
151.15
151.09
151.41
151.42
151.52
151.52
152.02
21
152.13
152.82
151.42
152.73
151.47
151.13
151.10
151.43
151.42
151.52
151.52
152.10
22
152.09
152.61
151.42
152.55
151.57
151.12
151.10
151.38
151.45
151.51
151.52
151.89
23
152.02
152.19
151.42
152.76
151.64
151.12
151.10
151.38
151.52
151.48
151.54
152.05
24
152.01
151.89
151.42
153.05
151.68
151.27
151.10
151.39
151.47
151.49
151.57
152.35
25
152.03
151.64
151.42
153.31
151.56
151.57
151.11
151.40
151.50
151.53
151.57
152.43
26
152.12
151.66
151.47
153.26
151.71
151.80
151.12
151.38
151.45
151.55
151.57
152.43
27
152.14
151.65
151.55
153.07
152.11
152.13
151.13
151.37
151.47
151.54
151.70
152.33
28
152.18
151.70
151.52
152.86
152.51
151.80
151.13
151.32
151.52
151.54
151.53
152.24
29
152.22
151.98
151.52
152.56
152.51
151.61
151.12
151.30
151.53
151.57
152.11
30
152.22
151.95
151.56
152.23
152.35
151.44
151.19
151.29
151.55
151.55
152.04
31
151.74
152.30
152.76
151.14
151.57
151.58
151.98
----------
--------------
Mean
152.20
152.26
151.61
152.30
151.71
152.19
151.16
151.29
151.42
151.54
151.60
151.72
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Max
152.63
153.09
152.08
153.31
152.76
153.94
151.51
151.48
151.57
151.61
151.70
152.43
153.94
Min
151.90
151.64
151.42
151.45
151.34
151.12
151.08
151.03
151.25
151.45
151.52
151.42
151.03
153.98
m. (MSL.) ,
150.92
m. (MSL.) ,
River Bed 150.48
m. (MSL.)
163.63
m. (MSL.) ,
163.59
m. (MSL.) ,
Drainage Area 13638 Square Kilometers
at 06.00 Hours, on Sep 6, 2014
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Right Bank Elevation
Left Bank Elevation