376
i
i h b k b
kil
d
f
h hi
WATER YEAR : 2013
NAN RIVER BASIN
Nan River at Ban Nong Kham , Phitsanulok (N.27A)
Lat 17 - 01 - 46 N Long 100 - 11 - 00 E
Locat on : on r g t an a out 1.8 ometers ownstream rom P rom P ram Dam.
19,363 sq.km.
Water - stage recorder
+38.430 m. (MSL.)
B.M.-H.D.
About 10 meters from the top staff gage.
Elevation
Recording
Amphoe
Phrom Phiram
Changwat
Phitsanulok
Ban
Nong Kham
Gage Reading Frequency
Zero Gage at Bottom
+48.572 m. (MSL.)
Type of Gage
Bench Mark
Location BM
Drainge Area
Arithmetic mean of 24 readings
1980 to date
1980 to date
-
1980 to date
Stable.
No overbank flow.
Basis of Mean Daily Gage Height
Rated by Current Meter
Stability of Channel Regimes
Overbank Flow Conditions
Rating Operation
Period of Rating
Rated by Flot
Period of Available Gage Records
Records good. Flow regulated by Naresuan Dam about 2 kilometers above gage site.
Stage-discharge relation defined by 30 discharge measurements made in 2013.
Date
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Annual
----------
-----------------
1
39.49
39.46
39.03
38.75
39.23
38.99
41.22
38.83
38.04
39.99
40.27
40.24
2
39.71
39.36
39.18
38.84
39.39
40.54
40.49
38.60
38.01
39.98
40.17
40.17
3
39.46
40.16
39.31
38.69
39.26
40.67
40.04
38.75
37.98
40.00
40.07
40.13
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Gage Height in Meter (MSL.) Water Year April 1, 2013 to March 31, 2014
General Description
4
39.46
40.27
39.49
38.56
38.90
40.05
40.34
38.72
38.48
40.07
40.32
40.44
5
39.50
40.19
39.57
38.49
38.84
38.48
40.22
38.82
38.70
39.71
40.21
40.21
6
39.24
40.20
39.61
38.45
39.07
39.00
40.32
38.63
38.96
39.93
40.09
40.00
7
39.26
40.40
39.67
38.44
38.79
38.72
39.91
38.44
39.10
39.93
40.20
39.73
8
39.21
40.21
39.27
38.48
39.02
38.62
39.40
38.30
39.19
39.71
40.09
39.53
9
39.25
40.04
39.36
39.24
39.00
39.14
39.00
38.59
39.12
39.71
39.91
39.52
10
39.22
39.86
39.31
39.50
39.01
39.07
38.67
38.38
39.18
39.73
39.92
39.68
11
39.18
39.91
39.58
39.80
39.36
39.63
38.38
38.33
39.25
39.53
40.05
39.77
12
39 18
39 56
39 44
40 01
40 46
39 27
38 60
38 33
39 25
39 56
40 15
39 47
.
.
.
.
.
.
.
.
.
.
.
.
13
39.23
39.60
39.58
39.89
40.43
39.28
38.36
38.50
39.25
39.39
39.99
39.37
14
39.30
39.77
39.58
39.53
40.17
39.68
38.35
38.34
38.89
39.64
39.94
39.43
15
39.38
40.02
39.31
38.99
39.50
40.14
38.29
38.60
38.88
39.93
39.99
39.45
16
39.22
40.23
38.94
38.55
39.24
41.13
38.39
38.60
39.60
39.64
40.12
39.48
17
39.42
39.85
38.91
38.63
39.61
41.22
38.40
38.39
39.69
39.64
39.97
39.60
18
39.65
39.72
38.84
38.58
39.48
40.97
38.68
38.24
38.87
39.59
40.38
39.78
19
39.47
39.76
38.77
38.47
39.54
40.50
39.43
38.09
38.42
39.40
40.18
39.67
20
39.54
39.73
38.84
38.42
38.96
39.98
40.02
38.09
38.95
39.55
40.33
39.81
21
39.39
39.94
38.80
38.48
38.84
39.50
40.37
38.17
39.83
39.70
40.22
39.66
22
39.40
39.62
38.89
38.50
38.51
39.58
40.22
38.18
39.92
39.77
40.18
39.85
23
39.77
39.42
38.83
38.50
39.00
39.14
40.05
38.20
39.77
39.80
40.20
39.89
24
39.86
39.05
39.40
38.50
41.10
39.01
39.81
38.20
39.79
40.03
40.12
40.16
25
39.79
39.09
39.10
38.41
41.35
38.87
39.86
38.15
39.75
40.31
40.23
40.21
26
39.49
39.11
38.69
38.51
40.08
38.78
40.05
38.20
39.82
40.18
40.20
40.05
27
39.45
39.15
38.52
38.47
39.40
39.53
40.14
38.22
39.72
40.18
40.16
40.12
28
39.43
39.22
38.55
38.51
38.90
40.87
40.07
38.22
39.77
40.26
39.88
40.13
29
39.41
39.05
38.73
38.47
38.49
42.16
39.79
38.21
39.74
40.38
40.17
30
39.38
39.02
38.77
39.03
38.39
42.18
39.37
38.10
39.83
40.40
40.38
31
39.06
39.19
38.42
39.17
39.97
40.23
40.64
----------
--------------
Mean
39.42
39.68
39.13
38.80
39.35
39.82
39.53
38.38
39.22
39.87
40.13
39.89
Max
39.86
40.40
39.67
40.01
41.35
42.18
41.22
38.83
39.97
40.40
40.38
40.64
42.18
Min
39.18
39.02
38.52
38.41
38.39
38.48
38.29
38.09
37.98
39.39
39.88
39.37
37.98
42.45
m. (MSL.) ,
38.43
m. (MSL.) ,
River Bed 36.79
m. (MSL.)
49.36
m. (MSL.) ,
49.13
m. (MSL.) ,
Drainage Area 19363 Square Kilometers
at 18.00 Hours , on Sep 29 , 2013
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Right Bank Elevation
Left Bank Elevation
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------