Page 266 - Slide 1

232
Location : on left bank at the bridge on road.
136 sq.km.
WATER YEAR : 2012
PING RIVER BASIN
Nam Mae Kuang at Ban Mae Wan , Chiang Mai (P.79)
Lat 18 - 57 - 45 N Long 99 - 14 - 31 E
Amphoe Doi Saket Changwat Chiang Mai Ban Mae Wan
Drainge Area
Water - stage recorder
+442.300 m. (MSL.)
B.M.-H.D.
On left bank at the approach of the bridge. Elevation
Recording.
Arithmetic mean of 24 readings
2001 to date
+447.326 m. (MSL.)
Rating Operation
Period of Available Gage Records
Bench Mark
Location BM
Basis of Mean Daily Gage Height
Gage Reading Frequency
Zero Gage at Bottom
Type of Gage
2001 to date
-
2001 to date
Fairly stable.
No overbank flow.
Records good. Stage-discharge relation defined by 40 discharge measurements made in 2012.
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
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1 442.84 442.77 442.90 442.83 442.88 442.95 442.98 442.86 442.81 442.78 442.80 442.76
2 442.82 442.77 442.89 442.82 442.87 442.96 442.97 442.86 442.81 442.78 442.77 442.76
3 442.82 442.78 442.88 442.81 442.86 443.15 442.98 442.85 442.81 442.78 442.78 442.77
4 442.83 442.79 442.89 442.82 442.85 443.10 442.95 442.92 442.80 442.78 442.79 442.80
5 442.82 442.86 442.86 442.83 442.84 443.05 442.96 442.87 442.79 442.77 442.77 442.79
6 442.84 442.91 442.88 442.86 442.85 443.02 442.98 442.85 442.78 442.76 442.77 442.77
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Gage Height in Meter (MSL.) Water Year April 1, 2012 to March 31, 2013
7 442.86 442.91 442.93 442.85 442.87 443.11 442.97 442.85 442.78 442.77 442.77 442.77
8 442.85 442.88 442.96 442.87 442.85 443.30 442.95 442.85 442.78 442.77 442.77 442.77
9 442.85 442.88 442.93 443.07 442.89 443.11 442.94 442.83 442.78 442.76 442.77 442.76
10 442.84 442.87 442.90 442.96 442.93 443.04 442.92 442.84 442.77 442.77 442.78 442.76
11 442.84 442.89 442.90 442.90 443.03 443.01 442.91 442.83 442.79 442.77 442.80 442.76
12 442.84 442.84 442.88 442.87 442.95 443.00 442.91 442.83 442.79 442.77 442.79 442.76
13 442.84 442.83 442.86 442.87 442.94 442.98 442.90 442.83 442.80 442.77 442.78 442.75
14 442.84 442.83 442.85 442.89 442.96 442.96 442.90 442.83 442.80 442.77 442.79 442.76
15 442.84 442.81 442.86 442.88 443.09 443.07 442.90 442.80 442.80 442.77 442.77 442.76
16 442.84 442.81 442.84 442.85 442.93 442.99 442.91 442.82 442.79 442.77 442.77 442.76
17 442.84 442.80 442.83 442.84 442.92 442.96 442.91 442.82 442.78 442.77 442.77 442.76
18 442.82 442.82 442.82 442.86 442.92 442.95 442.90 442.82 442.78 442.77 442.77 442.76
19 442.84 442.85 442.82 442.88 442.93 442.93 442.90 442.82 442.78 442.77 442.77 442.76
20 442.83 442.84 442.83 442.87 442.91 442.93 442.90 442.82 442.78 442.77 442.77 442.75
21 442.79 442.93 442.83 442.85 442.90 442.93 442.87 442.83 442.78 442.77 442.77 442.75
22 442.78 442.88 442.85 442.85 442.90 442.95 442.86 442.82 442.78 442.76 442.77 442.74
23 442.79 442.87 442.84 442.88 442.97 442.94 442.86 442.82 442.78 442.76 442.76 442.73
24 442.79 442.99 442.83 443.01 443.01 442.92 442.89 442.82 442.78 442.76 442.77 442.73
25 442.77 442.94 442.84 443.03 443.00 442.94 442.90 442.82 442.78 442.76 442.76 442.74
26 442.77 442.95 442.84 443.02 443.22 442.96 442.88 442.82 442.78 442.76 442.77 442.73
27 442.77 442.98 442.84 442.97 443.07 442.93 442.89 442.82 442.78 442.76 442.75 442.73
28 442.77 442.89 442.82 442.98 443.01 442.94 442.87 442.84 442.78 442.76 442.76 442.73
29 442.77 442.93 442.82 442.92 443.00 443.04 442.85 442.82 442.78 442.76 442.73
30 442.77 442.94 442.83 442.90 442.97 443.00 442.86 442.81 442.78 442.77 442.73
31 442.90 442.90 442.95 442.86 442.78 442.84 442.73
---------- --------------
Mean 442.82 442.87 442.86 442.89 442.94 443.00 442.91 442.83 442.79 442.77 442.77 442.75
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Max 442.86 442.99 442.96 443.07 443.22 443.30 442.98 442.92 442.81 442.84 442.80 442.80 443.30
Min 442.77 442.77 442.82 442.81 442.84 442.92 442.85 442.80 442.77 442.76 442.75 442.73 442.73
443.80 m. (MSL.) ,
442.30 m. (MSL.) , River Bed 442.32 m. (MSL.)
446.86 m. (MSL.) ,
446.09 m. (MSL.) , Drainage Area 136 Square Kilometers
Left Bank Elevation
Right Bank Elevation
at 05.00 Hours , on Sep 8 , 2012 Annual Max Momentary Gage Height
Zero Gage at Bottom Elevation