Basic HTML Version
354
Location : on right bank near the Post Office and about 1 kilometer upstream from gaging station N.5
25,039 sq.km.
WATER YEAR : 2011
NAN RIVER BASIN
Nan River at Mueang , Phitsanulok (N.5A)
Lat 16 - 49 - 19 N Long 100 - 15 - 49 E
Amphoe
Mueang
Changwat
Phitsanulok
Ban
Nai Mueang
Drainge Area
Water - stage recorder
+34.500 m. (MSL.)
B.M.-H.D.
Near the automatic gage building.
Elevation
Recording
Arithmetic means of 24 readings
1963 to date
+44.800 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
1966 to date
-
1966 to date
Fairly stable.
Overbank flow starts at elevation +44.400 m. (MSL.), records are channel flow only.
Records good. Flow effected by Naresuan Dam.
Stage-discharge relation defined by 24 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
36.79
36.41
37.30
36.61
40.25
44.65
45.31
39.30
36.24
38.73
39.88
38.95
2
36.75
36.52
37.18
36.48
42.54
44.74
45.17
39.38
36.49
38.69
40.00
39.09
3
36.62
36.53
37.02
36.35
43.42
44.76
45.04
39.15
36.48
38.54
40.11
38.88
4
36.97
36.47
36.81
36.86
43.47
44.77
45.08
39.09
36.32
38.74
40.16
39.07
5
36.96
36.42
36.59
36.87
43.57
44.79
45.26
38.92
36.36
39.19
40.01
39.05
6
36.56
36.44
36.61
36.64
43.55
44.79
45.36
38.72
36.13
39.39
39.88
38.85
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Gage Height in Meter (MSL.) Water Year April 1, 2011 to March 31, 2012
7
36.21
36.58
36.85
36.35
43.23
44.72
45.36
38.76
36.10
39.51
39.65
38.79
8
36.08
36.45
36.91
36.36
43.07
44.55
45.27
38.38
36.84
39.75
39.61
38.95
9
36.09
36.25
36.74
36.15
43.19
44.63
45.00
38.72
37.34
39.94
39.74
38.58
10
36.48
36.14
36.63
36.08
43.28
44.84
44.81
38.49
37.30
38.98
39.76
38.62
11
36.89
36.13
36.39
36.18
43.19
45.03
44.57
38.01
36.92
38.47
39.76
38.95
12
36.91
36.06
36.12
36.42
43.52
44.99
43.99
37.42
36.85
38.63
39.75
39.15
13
36.47
35.93
35.84
36.40
44.08
44.99
43.25
37.42
37.04
38.62
39.78
38.99
14
37.39
36.40
35.77
36.90
44.08
45.05
42.77
37.54
37.87
38.53
39.65
39.16
15
37.65
36.52
35.85
37.37
44.05
45.31
42.60
37.66
38.23
38.51
39.50
38.96
16
37.32
36.68
35.76
37.65
43.88
45.40
42.42
37.47
38.61
38.61
39.77
38.91
17
37.22
36.45
35.85
38.36
43.82
45.41
42.23
37.24
38.67
38.25
40.06
38.41
18
37.27
36.33
36.34
39.02
44.04
45.41
41.99
37.30
38.38
38.22
40.06
37.98
19
36.96
36.43
36.35
39.01
44.45
45.38
41.75
37.14
38.09
38.78
40.03
37.58
20
37.29
36.48
36.30
39.02
44.59
45.38
41.22
36.79
37.94
38.67
40.04
36.94
21
36.78
36.17
36.28
39.22
44.59
45.38
40.92
36.46
37.94
38.68
39.95
37.07
22
36.90
36.05
36.35
39.20
44.77
45.40
40.65
36.26
38.40
38.64
39.93
36.36
23
36.27
36.00
36.41
39.14
44.81
45.43
40.44
36.47
38.58
38.84
39.99
36.20
24
36.12
35.66
36.33
38.97
44.74
45.45
39.95
36.31
38.78
38.82
39.92
36.25
25
36.40
35.72
36.29
38.65
44.64
45.43
39.52
36.21
38.68
38.94
39.90
36.29
26
36.66
35.78
36.31
38.53
44.64
45.39
39.36
36.10
38.31
38.97
39.90
36.28
27
36.77
35.94
36.20
38.59
44.86
45.41
39.36
36.08
38.36
39.06
39.87
36.16
28
36.33
35.91
36.71
38.68
44.86
45.38
39.43
36.08
38.78
39.44
39.27
36.26
29
36.27
35.97
37.34
38.94
44.74
45.40
39.36
36.00
38.81
39.64
39.08
36.14
30
36.34
36.10
37.15
39.15
44.76
45.40
39.36
35.90
38.86
39.84
36.06
31
36.98
39.41
44.72
39.30
38.79
39.77
36.23
----------
--------------
Mean
36.72
36.25
36.49
37.73
43.92
45.12
42.45
37.49
37.69
38.95
39.83
37.84
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Max
37.65
36.98
37.34
39.41
44.86
45.45
45.36
39.38
38.86
39.94
40.16
39.16
45.45
Min
36.08
35.66
35.76
36.08
40.25
44.55
39.30
35.90
36.10
38.22
39.08
36.06
35.66
45.47
m. (MSL.) ,
34.50
m. (MSL.) ,
River Bed 33.12
m. (MSL)
44.39
m. (MSL.) ,
45.21
m. (MSL.) ,
Drainage Area 25039 Square Kilometers
at 14.00 Hours , on Sep 24 , 2011
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Left Bank Elevation
Right Bank Elevation