Basic HTML Version
404
Location : on right bank at Ban Tha Takhian.
25,018 sq.km.
WATER YEAR : 2011
NAN RIVER BASIN
Nan River at Ban Tha Takhian , Phitsanulok (N.68)
Lat 16 - 52 - 15 N Long 100 - 14 - 36 E
Amphoe
Mueang
Changwat
Phitsanulok
Ban
Tha Takhian
Drainge Area
Staff gage
+35.000 m. (MSL.)
B.M.- H.D.
On right bank near the gage site.
Elevation
5-time daily readings at 06.00, 09.00, 12.00, 15.00 and 18.00 hours.
Arithmetic means of 5 readings
1999 to date
+48.620 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
1999 to date
-
2004 to date
Stable.
Overbank flow starts at elevation +45.050 m. (MSL.), records are channel flow only.
Records good. Flow effected by Mae Yom side flow.
Stage-discharge relation defined by 22 discharge measurements made in 2011.
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
37.93
37.54
38.44
37.63
41.52
45.67
46.35
40.26
37.31
39.75
40.84
40.06
2
37.84
37.61
38.20
37.47
43.63
45.74
46.20
40.32
37.62
39.59
41.03
40.14
3
37.69
37.61
38.01
37.78
44.52
45.79
46.07
40.07
37.51
39.60
41.22
39.92
4
38.05
37.58
37.77
38.00
44.60
45.79
46.12
40.08
37.34
39.62
41.20
39.97
5
38.05
37.52
37.56
37.96
44.64
45.80
46.32
39.77
37.28
40.21
40.87
40.02
6
37.62
37.70
37.36
37.77
44.53
45.82
46.42
39.64
37.24
40.35
40.83
39.91
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Gage Height in Meter (MSL.) Water Year April 1, 2011 to March 31, 2012
7
37.38
37.72
37.94
37.63
44.55
45.68
46.41
39.68
37.35
40.43
40.66
39.88
8
37.25
37.56
37.87
37.50
44.56
45.57
46.29
39.50
37.97
40.87
40.71
39.95
9
37.44
37.33
37.77
37.37
44.36
45.66
46.00
39.40
38.53
40.74
40.75
39.68
10
37.73
37.34
37.63
37.23
44.30
45.88
45.81
39.10
38.16
39.92
40.79
39.86
11
38.01
37.38
37.31
37.56
44.19
46.04
45.54
38.52
38.05
39.47
40.79
40.06
12
37.94
37.33
37.23
37.66
44.58
46.03
44.98
38.40
37.96
39.56
40.78
40.12
13
37.81
37.49
37.23
37.51
45.20
46.03
44.10
38.48
38.13
39.66
40.81
40.11
14
38.52
37.65
36.99
37.72
45.10
46.37
43.63
38.57
38.97
39.52
40.62
40.22
15
38.74
37.55
37.03
38.34
45.08
46.45
43.31
38.67
39.25
39.65
40.51
40.06
16
38.40
37.77
36.95
38.78
44.90
46.48
43.23
38.63
39.44
39.48
40.77
39.96
17
38.32
37.41
37.03
39.44
44.82
46.49
43.15
38.24
39.55
39.26
41.06
39.35
18
38.24
37.57
37.40
40.01
45.28
46.48
42.88
38.13
39.37
39.38
41.12
38.94
19
38.04
37.50
37.34
39.97
45.53
46.45
42.67
37.87
39.02
39.78
41.10
38.46
20
38.28
37.29
37.41
40.00
45.65
46.45
42.21
37.77
39.10
39.78
41.06
38.09
21
37.96
37.18
37.41
40.13
45.62
46.39
41.78
37.53
39.47
39.87
40.97
38.20
22
37.98
36.98
37.40
40.03
45.86
46.49
41.49
37.35
39.35
39.90
41.04
37.53
23
37.36
36.85
37.22
40.03
45.96
46.53
41.31
37.29
39.46
39.82
40.98
37.39
24
37.41
36.73
37.08
39.88
45.78
46.50
40.80
37.32
39.25
39.91
41.01
37.38
25
37.58
36.85
36.99
39.52
45.71
46.49
40.43
37.37
39.38
39.95
40.90
37.38
26
37.70
36.97
36.97
39.48
45.73
46.43
40.33
37.29
39.50
39.88
40.79
37.43
27
37.66
36.94
37.35
39.58
45.77
46.44
40.41
37.24
39.58
40.15
40.82
37.37
28
37.49
36.92
37.93
39.54
45.78
46.45
40.36
37.15
39.70
40.50
40.27
37.51
29
37.03
37.18
38.39
39.81
45.80
46.46
40.34
37.00
39.80
40.58
40.07
37.41
30
37.51
37.38
38.08
40.17
45.79
46.47
40.31
36.96
39.83
40.34
37.36
31
37.68
40.48
45.73
40.30
39.83
40.75
37.51
----------
--------------
Mean
37.83
37.36
37.51
38.77
45.00
46.18
43.40
38.45
38.72
39.94
40.84
38.94
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Max
38.74
37.77
38.44
40.48
45.96
46.53
46.42
40.32
39.83
40.87
41.22
40.22
46.53
Min
37.03
36.73
36.95
37.23
41.52
45.57
40.30
36.96
37.24
39.26
40.07
37.36
36.73
46.54
m. (MSL.) ,
35.00
m. (MSL.) ,
River Bed 32.99
m. (MSL)
45.04
m. (MSL.) ,
45.10
m. (MSL.) ,
Drainage Area 25018 Square Kilometers
at 15.00 Hours , on Sep 23 , 2011
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Left Bank Elevation
Right Bank Elevation