Basic HTML Version
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WATER YEAR : 2013
NAN RIVER BASIN
Nan River at Ban Koei Chai, Nakhon Sawan (N.67)
Lat 15 - 52 - 05 N Long 100 - 16 - 07 E
Locat on : on r g t an at t e r ge near Wat Koe C a Nua
57,384 sq.km.
Water - stage recorder
+0.000 m. (MSL.)
B.M.-H.D.
On right bank near the gage observe's house
Elevation
Recording
+27.470 m. (MSL.)
Bench Mark
Type of Gage
Amphoe
Chum Saeng
Changwat
Nakhon Sawan
Ban
Koei Chai
Drainge Area
Location BM
Gage Reading Frequency
Zero Gage at Bottom
Arithmetic mean of 24 readings
1997 to date
1997 to date
-
1997 to date
Fairly stable.
No overbank flow.
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. Flow effected by Mae Yom side flow.
Stage-discharge relation defined by 58 discharge measurements made in 2013.
Date
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Annual
----------
-----------------
1
19.12
19.14
19.38
20.30
20.94
21.54
26.91
25.45
19.50
19.66
19.79
19.57
2
19.05
19.09
19.30
19.94
21.15
21.51
26.98
25.27
19.38
19.73
19.80
19.56
3
19.13
19.12
19.20
19.85
21.26
21.74
27.01
25.09
19.22
19.83
19.75
19.57
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Gage Height in Meter (MSL.) Water Year April 1, 2013 to March 31, 2014
General Description
4
19.33
19.20
19.14
19.56
21.34
22.26
26.98
24.87
19.24
19.88
19.76
19.59
5
19.45
19.51
19.10
19.30
21.31
22.58
26.97
24.60
19.20
19.89
19.73
19.56
6
19.44
19.92
19.20
19.32
21.12
22.61
26.99
24.27
19.27
19.83
19.73
19.63
7
19.43
20.12
19.43
19.40
20.81
22.41
26.98
23.86
19.47
19.77
19.73
19.66
8
19.40
20.23
19.72
19.40
20.56
22.19
26.93
23.50
19.82
19.68
19.71
19.50
9
19.38
20.36
19.88
19.55
20.44
22.10
26.82
23.16
20.17
19.69
19.68
19.33
10
19.32
20.44
19.84
20.23
20.45
22.22
26.70
22.85
20.22
19.67
19.64
19.13
11
19.27
20.37
19.69
20.83
20.63
22.41
26.49
22.58
20.06
19.57
19.54
18.99
12
19 29
20 19
19 69
21 29
21 18
22 52
26 21
22 35
19 92
19 51
19 49
18 92
.
.
.
.
.
.
.
.
.
.
.
.
13
19.28
20.07
19.82
21.73
21.97
22.80
25.99
22.07
19.67
19.45
19.52
18.97
14
19.29
19.90
20.19
22.04
22.96
23.08
25.82
21.75
19.47
19.37
19.60
19.03
15
19.31
19.74
20.71
22.03
23.65
23.36
25.69
21.52
19.36
19.31
19.59
19.02
16
19.27
19.69
21.24
21.71
23.88
23.63
25.46
21.30
19.34
19.33
19.53
19.08
17
19.28
19.81
21.28
21.25
23.98
24.04
25.16
21.03
19.29
19.47
19.52
19.11
18
19.35
19.93
20.95
20.65
23.98
24.48
24.95
20.95
19.43
19.51
19.57
19.14
19
19.24
19.93
20.60
20.33
23.95
24.80
24.87
21.09
19.63
19.40
19.59
19.06
20
19.21
19.83
20.44
20.21
23.82
24.96
24.87
21.10
19.61
19.26
19.60
19.00
21
19.38
19.85
20.31
20.13
23.52
25.09
24.92
20.82
19.37
19.18
19.63
19.07
22
19.40
19.87
20.42
20.03
22.89
25.28
25.08
20.44
19.23
19.19
19.57
19.13
23
19.38
19.90
20.80
19.84
22.34
25.60
25.17
20.24
19.49
19.29
19.58
19.08
24
19.34
19.92
21.27
19.74
22.10
26.04
25.20
20.17
19.83
19.39
19.55
18.98
25
19.41
19.81
21.39
19.69
22.20
26.21
25.15
19.99
19.94
19.40
19.51
19.03
26
19.56
19.57
21.27
19.79
22.66
26.22
25.21
19.70
19.94
19.50
19.49
19.13
27
19.54
19.50
21.11
20.16
23.01
26.30
25.50
19.62
19.88
19.60
19.47
19.21
28
19.45
19.52
21.01
20.38
22.84
26.46
25.75
19.58
19.82
19.75
19.52
19.24
29
19.30
19.50
20.94
20.58
22.47
26.61
25.79
19.46
19.75
19.78
19.25
30
19.19
19.51
20.63
20.75
22.07
26.79
25.75
19.48
19.72
19.75
19.39
31
19.45
20.84
21.74
25.64
19.66
19.76
19.41
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Mean
19.33
19.77
20.27
20.35
22.17
23.93
25.93
21.94
19.61
19.56
19.61
19.24
Max
19.56
20.44
21.39
22.04
23.98
26.79
27.01
25.45
20.22
19.89
19.80
19.66
27.01
Min
19.05
19.09
19.10
19.30
20.44
21.51
24.87
19.46
19.20
19.18
19.47
18.92
18.92
27.02
m. (MSL.) ,
0.00
m. (MSL.) ,
River Bed 14.01
m. (MSL.)
28.92
m. (MSL.) ,
28.21
m. (MSL.) ,
Drainage Area 57384 Square Kilometers
at 08.00 Hours , on Oct 3 , 2013
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Left Bank Elevation
Right Bank Elevation
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