Basic HTML Version
636
Location : on left bank at Ban Hua Na.
475
sq.km.
WATER YEAR : 2014
SOUTHERN PENINSULA EAST COAST
Khlong Klai at Ban Hua Na , Nakhon Si Thammarat (X.149)
Lat 08 - 43 - 46 N Long 99 - 44 - 53 E
Drainge Area
Amphoe
Nopphitam
Changwat
Nakhon Si Thammarat
Ban
Hua Na
Staff gage
+0.000 m. (MSL.)
B.M.-H.D.
On left bank near the station office.
Elevation
5-time daily readings at 06.00, 09.00, 12.00, 15.00 and 18.00 hours.
Arithmetic mean of 5 readings
1984 to date.
Rating Operation
Period of Available Gage Records
Basis of Mean Daily Gage Height
Gage Reading Frequency
Zero Gage at Bottom
+34.588 m. (MSL.)
Type of Gage
Bench Mark
Location BM
1984 to date.
-
1984 to date.
Fairly stable.
No overbank flow.
Records fair. Stage-discharge relation defined by 25 discharge measurements made in 2014.
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
28.99
28.93
29.18
28.93
29.02
29.00
29.33
29.32
29.31
29.81
29.23
29.05
2
28.98
28.93
29.31
28.93
28.98
28.99
29.28
29.29
29.28
29.69
29.21
29.04
3
28.97
29.11
29.20
28.92
28.94
28.96
29.31
29.30
29.30
29.63
29.20
29.04
4
28.97
29.04
29.17
28.91
28.92
28.95
29.54
29.36
29.52
29.59
29.19
29.03
5
28.97
28.91
29.53
28.90
28.92
28.94
29.32
29.26
29.33
29.55
29.19
29.03
6
29.15
28.90
29.29
28.89
28.95
28.96
29.24
29.23
29.31
29.53
29.33
29.03
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Gage Height in Meter (MSL.) Water Year April 1, 2014 to March 31, 2015
7
28.98
28.91
29.14
28.89
28.99
28.95
29.39
29.23
29.29
29.48
29.22
29.02
8
29.27
28.83
29.09
28.90
28.97
28.94
29.54
29.63
29.25
29.54
29.20
29.01
9
29.29
28.84
29.05
28.92
28.94
28.94
29.32
30.70
29.25
29.52
29.18
29.00
10
29.15
28.83
29.02
28.91
29.26
28.95
29.22
30.00
29.23
29.44
29.17
28.99
11
28.98
28.93
28.98
28.89
29.05
28.97
29.17
29.72
29.22
29.43
29.16
28.99
12
29.13
28.85
29.02
28.88
28.98
28.93
29.13
29.52
29.20
29.44
29.15
28.99
13
29.05
29.18
29.01
28.91
28.97
29.05
29.17
29.43
29.23
29.52
29.15
29.01
14
29.02
28.94
29.02
28.89
28.95
29.11
29.16
29.42
31.79
29.78
29.14
29.00
15
28.98
29.07
28.98
28.93
29.07
29.11
30.16
29.39
30.39
30.43
29.13
28.99
16
29.11
29.03
28.97
28.95
29.09
29.12
29.81
29.36
29.89
29.73
29.13
28.98
17
29.13
28.94
29.13
28.97
29.02
29.13
29.63
29.36
29.93
29.59
29.12
28.97
18
29.13
28.99
29.04
28.95
29.22
29.09
29.43
29.32
30.29
29.53
29.12
28.97
19
28.97
28.89
29.05
28.91
29.08
29.03
29.44
29.32
30.01
29.46
29.11
28.97
20
28.94
28.85
28.98
28.89
28.99
29.12
29.57
29.34
29.81
29.44
29.11
28.96
21
28.90
28.82
28.97
28.87
29.03
29.02
29.55
29.64
29.72
29.42
29.10
28.96
22
28.86
28.81
28.96
28.87
28.99
29.29
29.38
29.89
29.66
29.40
29.10
28.96
23
28.85
29.39
29.07
28.86
28.97
29.12
29.34
29.79
29.63
29.38
29.09
29.00
24
28.84
29.28
28.99
28.86
28.95
29.13
29.31
29.90
29.57
29.35
29.08
28.98
25
28.83
29.17
28.97
28.97
29.19
29.06
29.55
29.63
29.80
29.34
29.08
28.97
26
28.81
29.06
28.96
29.07
29.21
29.03
29.53
29.51
31.80
29.32
29.06
28.97
27
28.81
28.96
28.95
29.08
29.22
29.02
29.54
29.54
30.84
29.30
29.05
28.96
28
28.80
29.55
28.92
29.08
29.17
29.22
29.44
29.41
30.27
29.29
29.05
28.96
29
28.97
29.21
28.96
29.10
29.09
29.14
29.42
29.36
30.16
29.28
28.95
30
28.97
29.09
28.94
29.02
29.08
29.17
29.51
29.32
30.00
29.26
28.95
31
29.07
29.00
29.03
29.36
29.96
29.25
28.94
----------
--------------
Mean
28.99
29.01
29.06
28.94
29.04
29.05
29.42
29.52
29.81
29.51
29.14
28.99
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Max
29.29
29.55
29.53
29.10
29.26
29.29
30.16
30.70
31.80
30.43
29.33
29.05
31.80
Min
28.80
28.81
28.92
28.86
28.92
28.93
29.13
29.23
29.20
29.25
29.05
28.94
28.80
32.70
m. (MSL.) ,
0.00
m. (MSL.) ,
River Bed 26.57
m. (MSL.)
35.96
m. (MSL.) ,
35.96
m. (MSL.) ,
Drainage Area 475 Square Kilometers
at 18.00 Hours , on Dec 26 , 2014
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Right Bank Elevation
Left Bank Elevation