Basic HTML Version
192
Location : on left bank about 100 meters downstream from Nawarat Bridge.
6,350
sq.km.
Amphoe
Mueang
Changwat
Chiang Mai
Ban
Nawarat Bridge
WATER YEAR : 2011
PING RIVER BASIN
Ping River at Nawarat Bridge , Chiang Mai (P.1)
Lat 18 - 47 - 10 N Long 99 - 00 - 27 E
Drainge Area
Water - stage recorder.
+300.500 m. (MSL.)
B.M.-H.D.
On left bank near automatic gage building
Elevation
Recording
Arithmetic means of 24 readings
1921 to date
Basis of Mean Daily Gage Height
Gage Reading Frequency
Zero Gage at Bottom
+305.310 m. (MSL.)
Type of Gage
Bench Mark
Location BM
Rating Operation
Period of Available Gage Records
1954 - 1960 , 1967 to date
1936 - 1938
1954 - 1960 , 1967 to date
Fairly stable because of backwater effect.
No overbank flow.
Records fair. Flow regulated by Mae Ngat Dam and Mae Taeng Weir above gage site.
Phaya Kham weir situated about 2 Kilometers dowmstream from the gage site.
Stage-discharge relation defined by 37 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
301.85
302.08
302.18
302.19
303.36
303.01
303.99
302.27
302.08
301.82
301.81
301.76
2
301.84
302.35
302.09
302.18
304.11
302.99
303.82
302.23
302.07
301.88
301.81
301.74
3
301.85
302.49
302.12
302.23
303.50
302.98
303.68
302.20
302.07
301.88
301.81
301.70
4
301.85
302.57
302.27
302.25
303.06
302.91
303.65
302.23
302.09
301.88
301.81
301.69
5
301.86
302.45
302.38
302.21
302.68
302.78
303.59
302.26
302.08
301.88
301.79
301.70
6
301.86
302.51
302.48
302.12
302.54
303.24
303.41
302.26
302.07
301.87
301.76
301.71
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Gage Height in Meter (MSL.) Water Year April 1, 2011 to March 31, 2012
7
301.89
302.42
302.52
302.09
302.50
303.86
302.98
302.33
302.05
301.87
301.76
301.69
8
301.89
302.28
302.28
302.07
302.52
303.46
302.87
302.23
302.03
301.87
301.76
301.69
9
301.91
302.19
302.18
302.06
302.56
303.13
302.85
302.25
302.01
301.87
301.76
301.70
10
301.95
302.23
302.14
302.08
302.73
303.03
302.82
302.27
302.00
301.87
301.77
301.73
11
301.98
302.24
302.13
302.16
302.93
302.89
302.73
302.20
302.00
301.87
301.93
301.89
12
301.98
302.16
302.15
302.19
303.07
302.70
302.65
302.16
302.00
301.87
302.00
301.89
13
302.00
302.10
302.19
302.12
303.13
302.98
302.68
302.14
301.99
301.87
302.00
301.91
14
302.01
302.07
302.23
302.12
303.01
303.35
302.74
302.12
301.99
301.93
302.01
301.94
15
302.02
302.06
302.24
302.34
302.93
303.53
302.67
302.11
301.97
302.07
302.03
301.97
16
301.98
302.09
302.19
302.48
302.98
303.24
302.60
302.12
301.94
301.95
301.94
301.91
17
301.94
302.19
302.15
302.60
302.84
302.97
302.62
302.11
301.93
301.89
301.81
301.87
18
301.95
302.34
302.14
302.52
302.79
302.85
302.63
302.12
301.94
301.87
301.79
301.80
19
301.92
302.47
302.13
302.39
302.91
302.87
302.59
302.15
301.93
301.87
301.78
301.80
20
301.96
302.62
302.11
302.36
303.00
303.09
302.49
302.21
301.91
301.85
301.76
301.82
21
301.96
302.49
302.12
302.34
302.93
302.96
302.42
302.18
301.90
301.84
301.75
301.78
22
301.96
302.30
302.13
302.34
303.05
303.17
302.39
302.16
301.90
301.84
301.75
301.77
23
301.94
302.23
302.10
302.33
302.99
303.21
302.37
302.16
301.90
301.84
301.68
301.81
24
302.07
302.17
302.09
302.33
302.84
303.05
302.34
302.16
301.90
301.84
301.68
301.79
25
302.22
302.14
302.08
302.48
302.73
303.23
302.30
302.15
301.90
301.83
301.74
301.80
26
302.25
302.08
302.22
302.48
303.18
303.31
302.28
302.15
301.90
301.81
301.73
301.83
27
302.12
302.10
302.43
302.37
303.97
303.39
302.27
302.13
301.89
301.83
301.71
301.88
28
302.04
302.17
302.44
302.26
303.76
304.60
302.26
302.13
301.89
301.82
301.76
301.90
29
302.00
302.15
302.35
302.24
303.48
305.37
302.27
302.11
301.89
301.82
301.76
301.91
30
302.07
302.18
302.26
302.23
303.13
304.97
302.33
302.09
301.88
301.81
301.89
31
302.29
302.32
303.04
302.39
301.88
301.82
301.84
----------
--------------
Mean
301.97
302.26
302.22
302.27
303.04
303.30
302.76
302.18
301.97
301.87
301.81
301.81
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Max
302.25
302.62
302.52
302.60
304.11
305.37
303.99
302.33
302.09
302.07
302.03
301.97
305.37
Min
301.84
302.06
302.08
302.06
302.50
302.70
302.26
302.09
301.88
301.81
301.68
301.69
301.68
305.44
m. (MSL.) ,
300.50
m. (MSL.) ,
River Bed 299.08
m. (MSL)
307.73
m. (MSL.) ,
307.63
m. (MSL.) ,
Drainage Area 6350 Square Kilometers
at 04.00 Hours , on Sep 29 , 2011
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Right Bank Elevation
Left Bank Elevation