Basic HTML Version
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WATER YEAR : 2013
NAN RIVER BASIN
Nan River at Ban Bun Nak , Nan (N.13A)
Lat 18 - 33 - 12 N Long 100 - 46 - 03 E
Locat on : on r g t an a out 2 ometers upstream rom Stat on N.13
8,706
sq.km.
Staff gage.
+177.400 m. (MSL.)
B.M.-H.D.
On right bank at the abutment of the bridge.
Elevation
3-time daily readings at 06.00, 12.00 and 18.00 hours.
+192.700 m. (MSL.)
Bench Mark
Type of Gage
Amphoe
Wiang Sa
Changwat
Nan
Ban
Bun Nak
Drainge Area
Location BM
Gage Reading Frequency
Zero Gage at Bottom
Arithmetic mean of 3 readings
1987 to date
1987 to date
-
1987 to date
Fairly Stable because of backwater effect.
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. Stage-discharge relation defined by 47 discharge measurements made in 2013.
Date
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Annual
----------
-----------------
1
177.81
177.82
177.87
178.11
181.65
180.94
179.07
178.39
178.12
178.00
177.89
177.82
2
177.81
177.81
177.90
178.11
182.00
180.48
179.09
178.36
178.14
177.97
177.88
177.82
3
177.83
177.81
178.07
178.02
180.88
180.05
179.09
178.36
178.12
177.98
177.89
177.82
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Gage Height in Meter (MSL.) Water Year April 1, 2013 to March 31, 2014
General Description
4
177.81
177.86
178.07
177.95
180.27
179.69
179.20
178.34
178.11
177.98
177.88
177.81
5
177.81
177.93
178.18
178.07
180.04
179.63
179.05
178.32
178.08
177.97
177.88
177.81
6
177.80
177.95
178.09
178.26
179.80
180.87
178.96
178.28
178.06
177.97
177.87
177.80
7
177.79
177.96
178.07
178.30
179.79
182.64
178.94
178.26
178.07
177.96
177.87
177.80
8
177.79
177.91
177.99
178.21
180.99
181.28
178.84
178.27
178.05
177.95
177.86
177.80
9
177.79
177.93
177.97
178.13
181.45
180.74
178.74
178.26
178.05
177.95
177.86
177.79
10
177.78
177.95
178.00
178.14
183.95
180.55
178.67
178.26
178.04
177.95
177.86
177.79
11
177.77
177.98
178.43
178.18
183.47
180.07
178.64
178.26
178.03
177.94
177.86
177.66
12
177 77
178 00
178 70
178 63
182 08
179 86
178 61
178 25
178 03
177 94
177 85
177 66
.
.
.
.
.
.
.
.
.
.
.
.
13
177.76
177.99
178.22
178.51
181.02
179.91
178.60
178.26
178.03
177.93
177.85
177.66
14
177.75
177.95
178.01
179.05
180.62
179.90
178.56
178.26
178.04
177.93
177.84
177.65
15
177.75
177.91
177.97
178.93
180.53
180.00
178.52
178.27
178.04
177.92
177.84
177.65
16
177.75
177.85
177.91
179.21
180.04
180.79
178.50
178.30
178.16
177.92
177.84
177.65
17
177.74
177.80
177.88
179.11
180.21
180.24
178.49
178.24
178.72
177.92
177.84
177.65
18
177.76
177.78
177.86
178.96
179.98
179.96
178.68
178.21
178.23
177.92
177.85
177.65
19
177.75
177.75
177.90
178.92
179.69
179.90
179.03
178.24
178.13
177.92
177.85
177.65
20
177.75
177.75
177.86
178.87
180.13
179.70
178.76
178.23
178.11
177.92
177.85
177.65
21
177.74
177.77
177.90
178.69
180.29
179.50
178.67
178.26
178.09
177.92
177.84
177.93
22
177.88
177.91
177.94
178.59
180.27
179.32
178.57
178.26
178.06
177.91
177.84
177.95
23
177.87
177.88
177.96
178.83
181.32
179.20
178.55
178.23
178.05
177.91
177.83
177.95
24
177.86
177.89
177.95
179.30
180.79
179.13
178.55
178.18
178.04
177.91
177.83
177.95
25
177.83
178.05
177.93
179.27
180.77
179.29
178.66
178.16
178.04
177.91
177.83
177.95
26
177.85
178.11
178.13
179.85
180.41
179.30
178.74
178.17
178.03
177.91
177.83
177.95
27
177.85
178.00
178.09
179.35
180.13
179.75
178.58
178.16
178.02
177.90
177.82
177.99
28
177.85
177.92
178.07
179.27
180.08
179.81
178.50
178.13
178.00
177.90
177.82
177.99
29
177.83
177.85
178.12
181.77
179.95
179.50
178.48
178.13
178.00
177.90
177.95
30
177.83
177.83
178.12
184.39
179.81
179.21
178.40
178.12
178.00
177.89
177.95
31
177.83
183.65
180.33
178.40
177.98
177.89
177.95
----------
--------------
Mean
177.80
177.89
178.04
179.12
180.73
180.04
178.71
178.25
178.09
177.93
177.85
177.81
Max
177.88
178.11
178.70
184.39
183.95
182.64
179.20
178.39
178.72
178.00
177.89
177.99
184.39
Min
177.74
177.75
177.86
177.95
179.69
179.13
178.40
178.12
177.98
177.89
177.82
177.65
177.65
184.55
m. (MSL.) ,
177.40
m. (MSL.) ,
River Bed 174.73
m. (MSL.)
190.27
m. (MSL.) ,
192.59
m. (MSL.) ,
Drainage Area 8706 Square Kilometers
at 18.00 Hours , on Jul 30 , 2013
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Left Bank Elevation
Right Bank Elevation
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