Basic HTML Version
646
i
l f b k h b id
WATER YEAR : 2013
SOUTHERN PENINSULA EAST COAST
Khlong Tha Di at Ban Tha Yai , Nakhon Si Thammarat (X.55)
Lat 08 - 23 - 52 N Long 99 - 50 - 14 E
Locat on : on e t an at t e r ge.
105
sq.km.
Staff gage
+0.000 m. (MSL.)
B.M.-H.D.
On left bank about 63.60 meters from fourth staff gage.
Elevation
5-time daily readings at 06.00, 09.00, 12.00, 15.00 and 18.00 hours.
Drainge Area
Location BM
Gage Reading Frequency
Zero Gage at Bottom
+24.748 m. (MSL.)
Bench Mark
Type of Gage
Amphoe
Lan Saka
Changwat
Nakhon Si Thammarat
Ban
Tha Yai
Arithmetic mean of 5 readings
1967 to date
1967 - 1971 , 1989 to date
-
1967 - 1971 , 1989 to date
Fairly stable.
No overbank flow.
Rating Operation
Period of Rating
Rated by Flot
Period of Available Gage Records
Basis of Mean Daily Gage Height
Rated by Current Meter
Stability of Channel Regimes
Overbank Flow Conditions
Records fair. Stage-discharge relation defined by 23 discharge measurements made in 2013.
Date
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Annual
----------
-----------------
1
18.18
18.10
18.03
17.89
18.00
17.93
18.05
18.07
18.88
18.03
17.96
18.01
2
18.18
18.12
18.05
17.87
18.00
17.93
18.05
18.07
18.33
18.03
17.95
18.01
3
18.18
18.18
18.04
17.88
17.99
17.92
18.04
18.07
18.27
18.03
17.95
18.01
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Gage Height in Meter (MSL.) Water Year April 1, 2013 to March 31, 2014
General Description
4
18.18
18.18
18.04
17.87
17.99
17.91
18.05
18.07
19.47
18.01
17.95
18.01
5
18.14
18.16
18.03
17.86
17.98
17.91
18.08
18.06
19.47
18.00
17.95
18.01
6
18.15
18.16
18.03
17.84
17.97
17.93
18.07
18.05
19.80
18.00
17.95
18.01
7
18.15
18.15
18.03
17.81
17.97
17.95
18.04
18.05
19.61
18.00
17.95
18.01
8
18.16
18.15
18.01
17.80
17.96
17.94
18.06
18.05
18.77
18.00
17.95
18.01
9
18.15
18.13
18.00
17.92
18.00
17.95
18.08
18.04
18.32
18.00
17.94
18.01
10
18.15
18.11
18.00
17.97
17.98
17.94
18.06
18.04
18.26
18.02
17.94
18.01
11
18.12
18.16
18.00
18.00
17.97
17.94
18.09
18.03
18.25
18.02
17.94
18.01
12
18 12
18 13
18 00
18 00
17 94
17 95
18 15
18 03
18 23
18 02
18 04
18 01
.
.
.
.
.
.
.
.
.
.
.
.
13
18.12
18.12
18.02
17.99
17.97
18.09
18.11
18.03
18.20
18.03
18.06
18.01
14
18.87
18.12
18.08
18.00
17.96
18.08
18.08
18.02
18.19
18.04
18.06
18.01
15
18.41
18.12
18.05
18.00
17.96
18.07
18.08
18.00
18.18
18.04
18.05
18.01
16
18.17
18.14
18.05
17.99
17.95
18.07
18.09
18.00
18.16
18.04
18.05
18.02
17
18.12
18.11
18.06
17.99
17.95
18.07
18.12
18.02
18.21
18.03
18.05
18.02
18
18.11
18.13
18.04
17.99
17.94
18.07
18.13
18.13
18.20
18.02
18.05
18.02
19
18.11
18.10
18.04
18.03
17.93
18.06
18.15
18.67
18.17
18.02
18.04
18.01
20
18.11
18.08
18.08
18.00
17.93
18.39
18.21
18.44
18.13
18.01
18.04
18.01
21
18.12
18.08
18.07
18.00
17.93
18.24
18.21
18.98
18.12
18.00
18.03
18.00
22
18.17
18.08
18.07
18.00
17.93
18.12
18.17
21.85
18.12
18.00
18.02
18.00
23
18.12
18.07
18.06
18.02
17.93
18.09
18.15
20.72
18.12
18.00
18.02
18.00
24
18.12
18.07
18.06
18.03
17.92
18.05
18.12
19.17
18.12
18.00
18.02
18.00
25
18.12
18.06
18.06
18.02
17.92
18.05
18.09
18.69
18.10
18.00
18.02
17.99
26
18.11
18.05
18.06
18.01
17.92
18.05
18.10
18.42
18.06
18.00
18.02
17.99
27
18.10
18.04
18.03
18.00
17.94
18.04
18.14
18.33
18.05
17.99
18.01
17.99
28
18.12
18.04
17.91
18.00
17.93
18.05
18.12
18.35
18.04
17.98
18.01
17.99
29
18.11
18.04
17.90
18.00
17.99
18.07
18.11
18.45
18.03
17.97
17.98
30
18.10
18.05
17.90
18.00
17.92
18.07
18.10
19.46
18.03
17.98
17.99
31
18.07
18.01
17.92
18.08
18.03
17.96
17.98
----------
--------------
Mean
18.17
18.11
18.03
17.96
17.95
18.03
18.10
18.48
18.38
18.01
18.00
18.00
Max
18.87
18.18
18.08
18.03
18.00
18.39
18.21
21.85
19.80
18.04
18.06
18.02
21.85
Min
18.10
18.04
17.90
17.80
17.92
17.91
18.04
18.00
18.03
17.96
17.94
17.98
17.80
22.36
m. (MSL.) ,
0.00
m. (MSL.) ,
River Bed 17.40
m. (MSL.)
25.20
m. (MSL.) ,
25.57
m. (MSL.) ,
Drainage Area 105 Square Kilometers
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at 12.00 Hours , on Nov 22 , 2013
Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation
Left Bank Elevation
Right Bank Elevation