Basic HTML Version
358
Location : on right bank opposite to Wat Bang Mun Nak.
31,472 sq.km.
Amphoe
Bang Mun Nak
Changwat
Phichit
Ban
Hor Krai
WATER YEAR : 2011
NAN RIVER BASIN
Nan River at Ban Hor Krai , Phichit (N.8A)
Lat 16 - 04 - 45 N Long 100 - 24 - 00 E
Drainge Area
Staff gage
+20.000 m. (MSL.)
B.M.-H.D.
On right bank about 89 meters upstream from the top staff gage.
Elevation
5-time daily readings at 06.00, 09.00, 12.00, 15.00 and 18.00 hours.
Arithmetic means of 5 readings
2000 to date
Basis of Mean Daily Gage Height
Gage Reading Frequency
Zero Gage at Bottom
+30.948 m. (MSL.)
Type of Gage
Bench Mark
Location BM
Rating Operation
Period of Available Gage Records
2000 to date
-
2000 to date
Fairly Stable.
Overbank flow starts at elevation +30.670 m.(MSL.), records are channel flow only.
Records Fair. Flow effected by Naresuan Dam.
Stage-discharge relation defined by 28 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
22.67
22.64
26.84
25.81
29.80
31.75
31.61
29.88
23.97
25.55
26.62
26.16
2
23.01
22.75
27.43
25.89
29.93
31.77
31.60
29.51
23.92
25.47
26.54
25.83
3
23.20
23.18
27.66
26.12
30.14
31.79
31.61
29.48
23.82
25.36
26.60
25.74
4
23.16
23.49
27.60
26.68
30.46
31.80
31.62
29.45
23.75
25.14
26.71
25.67
5
23.14
23.51
27.42
27.07
30.67
31.81
31.62
29.40
23.72
25.15
26.81
25.60
6
23.32
23.43
27.17
27.24
30.78
31.82
31.59
29.36
23.70
25.50
26.81
25.62
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Gage Height in Meter (MSL.) Water Year April 1, 2011 to March 31, 2012
7
23.08
23.83
27.18
27.11
30.84
31.82
31.59
29.35
23.06
25.79
26.68
25.57
8
22.71
24.58
27.44
26.78
30.80
31.83
31.57
29.32
22.83
26.05
26.56
25.47
9
22.41
24.80
27.75
26.35
30.80
31.84
31.55
29.11
22.77
26.42
26.40
25.50
10
22.25
24.65
27.94
25.92
30.83
31.86
31.55
28.95
22.73
26.53
26.43
25.55
11
22.31
24.32
27.89
25.60
30.85
31.87
31.52
28.91
22.69
26.41
26.47
25.58
12
22.62
24.00
27.70
25.62
30.91
31.85
31.49
28.79
22.73
25.94
26.50
25.60
13
22.77
23.72
27.35
25.76
30.98
31.85
31.45
28.59
23.44
25.73
26.53
25.77
14
22.84
23.65
26.92
25.89
31.08
31.86
31.38
28.41
23.53
25.75
26.57
25.80
15
22.80
23.94
26.38
26.02
31.15
31.86
31.32
28.21
23.86
25.76
26.55
25.77
16
22.90
24.04
26.01
26.38
31.20
31.87
31.28
28.06
24.35
25.69
26.41
25.68
17
23.12
23.98
25.74
26.66
31.23
31.87
31.24
27.99
24.80
25.75
26.47
25.55
18
23.53
24.79
25.45
28.07
31.28
31.87
31.19
27.90
25.03
25.56
26.69
25.31
19
23.52
24.76
25.49
28.56
31.37
31.84
31.17
27.83
24.92
25.37
26.80
24.78
20
23.50
24.72
26.10
28.88
31.44
31.79
31.12
27.76
24.79
25.24
26.82
24.42
21
23.36
24.91
26.36
29.10
31.49
31.75
31.08
27.45
24.52
25.34
26.83
23.88
22
23.28
25.01
26.41
29.30
31.54
31.73
31.01
26.94
24.59
25.51
26.77
23.59
23
23.16
24.95
26.33
29.44
31.55
31.68
30.95
26.50
24.72
25.58
26.75
23.49
24
22.90
24.78
26.25
29.54
31.58
31.68
30.88
26.21
24.94
25.66
26.73
23.09
25
22.63
24.30
26.07
29.61
31.58
31.67
30.74
25.77
25.19
25.65
26.70
22.98
26
22.50
23.93
25.79
29.62
31.61
31.64
30.66
25.41
25.42
25.63
26.68
22.73
27
22.71
23.87
25.45
29.67
31.62
31.65
30.56
25.08
25.33
25.63
26.65
22.69
28
22.88
24.07
24.95
29.71
31.64
31.67
30.45
24.91
24.75
25.56
26.63
22.57
29
22.84
24.46
25.00
29.73
31.65
31.65
30.27
24.49
24.94
25.73
26.39
22.48
30
22.73
25.16
25.51
29.74
31.70
31.63
30.06
24.08
25.18
26.12
22.36
31
26.05
29.75
31.72
29.97
25.46
26.45
22.31
----------
--------------
Mean
22.93
24.20
26.59
27.67
31.10
31.78
31.15
27.77
24.18
25.71
26.62
24.62
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Max
23.53
26.05
27.94
29.75
31.72
31.87
31.62
29.88
25.46
26.53
26.83
26.16
31.87
Min
22.25
22.64
24.95
25.60
29.80
31.63
29.97
24.08
22.69
25.14
26.39
22.31
22.25
31.88
m. (MSL.) ,
20.00
m. (MSL.) ,
River Bed 18.80
m. (MSL)
30.66
m. (MSL.) ,
31.32
m. (MSL.) ,
Drainage Area 31472 Square Kilometers
at 06.00 Hours , on Sep 16 , 2011
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Right Bank Elevation
Left Bank Elevation