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WATER YEAR : 2013
CHI RIVER BASIN
Chi River at Maha Chana Chai , Yasothon (E.20A)
Lat 15 - 31 - 22 N Long 104 - 15 - 13 E
Locat on : on r g t an a out 800 meters upstream rom E.20 stat on.
47,800 sq.km.
Staff gage
+112.000 m. (MSL.)
B.M.- H.D.
On right bank at the abutment of the bridge.
Elevation
3-time daily readings at 06.00, 12.00 and 18.00 hours.
Drainge Area
Amphoe
Maha Chana Chai
Changwat
Yasothon
Ban
Maha Chana Chai
Gage Reading Frequency
Zero Gage at Bottom
+126.610 m. (MSL.)
Type of Gage
Bench Mark
Location BM
Arithmetic mean of 3 readings
1973 to date
1974 to date
-
1974 to date
Fairly stable.
Overbank flow starts at elevation +121.410 m.(MSL.), records are channel flow only.
Rated by Current Meter
Stability of Channel Regimes
Overbank Flow Conditions
Rating Operation
Period of Rating
Rated by Flot
Period of Available Gage Records
Basis of Mean Daily Gage Height
Records good. Tat Noi barrage situated downstream from the gage site.
Stage-discharge relation defined by 19 discharge measurements made in 2013.
Date
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Annual
----------
-----------------
1
114.21
114.24
114.18
114.16
116.96
116.94
122.15
120.60
116.78
116.34
115.40
114.42
2
114.23
114.24
114.18
114.16
117.31
117.14
122.22
120.61
116.37
116.39
115.35
114.35
3
114.26
114.24
114.18
114.17
117.76
117.23
122.24
120.59
116.19
116.36
115.25
114.31
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Gage Height in Meter (MSL.) Water Year April 1, 2013 to March 31, 2014
General Description
4
114.29
114.24
114.18
114.39
118.02
117.27
122.24
120.57
116.20
116.35
115.14
114.31
5
114.31
114.24
114.18
114.39
118.30
117.19
122.21
120.55
116.20
116.34
115.12
114.31
6
114.34
114.24
114.18
114.50
118.37
117.02
122.16
120.49
116.20
116.29
115.08
114.30
7
114.34
114.23
114.18
114.47
118.22
116.83
122.11
120.42
116.22
116.23
114.98
114.31
8
114.33
114.22
114.18
114.45
118.01
116.90
122.03
120.30
116.27
116.10
114.94
114.38
9
114.28
114.22
114.18
114.46
117.89
116.82
121.97
120.23
116.24
116.15
114.91
114.45
10
114.28
114.22
114.17
114.46
117.88
117.10
121.90
120.20
116.14
116.20
114.89
114.44
11
114.26
114.21
114.17
114.45
117.84
117.18
121.83
120.10
116.08
116.28
114.87
114.44
12
114 25
114 20
114 17
114 45
117 77
117 41
121 75
119 85
116 09
116 13
114 81
114 43
.
.
.
.
.
.
.
.
.
.
.
.
13
114.25
114.20
114.17
114.45
117.77
117.26
121.69
119.74
116.14
116.00
114.76
114.43
14
114.25
114.21
114.17
114.45
117.81
117.35
121.63
119.59
116.17
115.96
114.70
114.45
15
114.25
114.21
114.17
114.43
118.00
117.25
121.54
119.31
116.19
115.88
114.65
114.47
16
114.25
114.20
114.16
114.47
118.08
117.77
121.43
119.04
116.20
115.66
114.62
114.49
17
114.24
114.20
114.16
114.60
118.01
118.25
121.28
118.74
116.21
115.63
114.60
114.49
18
114.24
114.19
114.16
114.67
117.85
118.71
121.15
118.39
116.18
115.62
114.56
114.49
19
114.23
114.19
114.16
114.63
117.64
119.43
121.03
117.90
116.17
115.61
114.45
114.45
20
114.23
114.18
114.16
114.54
117.39
119.86
120.88
117.18
116.15
115.60
114.41
114.43
21
114.24
114.18
114.16
114.49
117.16
120.19
120.88
116.83
116.15
115.61
114.46
114.41
22
114.24
114.18
114.16
114.54
116.99
120.50
120.83
116.44
116.14
115.58
114.49
114.41
23
114.25
114.18
114.16
114.63
116.89
120.72
120.78
116.30
116.12
115.57
114.51
114.38
24
114.25
114.18
114.16
114.76
116.91
120.96
120.76
116.21
116.13
115.56
114.52
114.36
25
114.26
114.18
114.16
114.83
116.66
121.20
120.73
116.20
116.36
115.55
114.53
114.34
26
114.26
114.18
114.17
115.17
116.60
121.42
120.71
116.25
116.46
115.55
114.51
114.31
27
114.26
114.18
114.17
115.47
116.71
121.66
120.68
116.38
116.52
115.53
114.52
114.28
28
114.25
114.18
114.17
115.69
116.85
121.81
120.65
116.64
116.53
115.53
114.52
114.28
29
114.24
114.18
114.16
115.87
116.91
121.93
120.69
116.85
116.37
115.51
114.31
30
114.24
114.18
114.16
116.24
116.82
122.04
120.55
116.94
116.21
115.46
114.32
31
114.18
116.60
116.83
120.53
116.28
115.45
114.34
----------
--------------
Mean
114.26
114.20
114.17
114.74
117.49
118.78
121.39
118.65
116.25
115.87
114.77
114.38
Max
114.34
114.24
114.18
116.60
118.37
122.04
122.24
120.61
116.78
116.39
115.40
114.49
122.24
Min
114.21
114.18
114.16
114.16
116.60
116.82
120.53
116.20
116.08
115.45
114.41
114.28
114.16
122.24
m. (MSL.) ,
112.00
m. (MSL.) ,
River Bed 110.45
m. (MSL.)
121.67
m. (MSL.) ,
121.40
m. (MSL.) ,
Drainage Area 47800 Square Kilometers
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at 18.00 Hours, on Oct 2, 2013
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Right Bank Elevation
Left Bank Elevation