Discharge Measured byriver Surveyor M 9at KokkowaRiver

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1 Discharge Measured byriver Surveyor M 9at KokkowaRiver Monitoring with Laptop when discharge measured by River Surveyor M9 B-52

2 TakingSurveyingat the bank of KokkowaRiver Participate inatripof Measuringdischarge at KokkowaRiver by River Surveyor M9 B-53

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14 The Republic of The Union of Myanmar Ministry of Agriculture and Irrigation Irrigation Department Report of the Flow Measurement by Using River Surveyor M-9 at Kawhmu Township,Toe River Hydrology Branch 2013, April, (18) Report of the Flow Measurement by Using River Surveyor M-9 at Kawhmu Township, Toe River B-65

15 Introduction 1. Hydrology Branch was given the assignment to take the flow measurement at Toe river near Kyaik Htaw village by using the River surveyor M-9. This assignment was given by the Head Office. Irrigation Department Letter No. 1804/Siman-1 dated at ( ) and to assist (YCDC) (The Project for the Improvement of water supply, sewerage and Drainage system in Yangon City). Location of Station 2. Water level station at Toe river near Kyaik Htaw village, Kawhmu Township, Yangon Region, as indicated in Annex (1). Field Observation 3. Measuring Discharge by using River Surveyor M-9 and taking survey data in both side of River bank and water level were carried out by staff of Hydrology Branch at ( ). The three no. of Discharge measurements by Boat were taken at that time. Cross Sections and velocity distribution of each measurement are as shown in Annex 4-6. Measuring Time is from 3:15 P.M to 4:15 P.M. Results 4. The result for Three no of flow measurements are as shown in Annex (2). According the result of one flow measurement, One result should be used to compute the mean discharge and as shown in Annex (3). Detail results are as followed. -2- Sr. No Station 1. Kyaik Htaw Water level station ( Toe River) Width (m) Area (m 2 ) Velocity (m/s) Total Discharge (Q) m 3 /sec Water level of Toe river station at ( ) time (3:15) Pm is (52) cm. Remark Numbers of Measuring of discharge by using River Surveyor M9 are three times. But only one result of measurement is good. Results of two measurements are considered unreliable, because of the tide effect. Therefore only one time measured result should be used reliably. B-66

16 The list of the staffs and officers of Hydrology Branch in taking flow measurement at Toe river by using River Surveyor M-9. Date Sr.No Name Designation Office 1. Daw Than Win Assistant Director Assistant Director Office Hydrology Branch, Yangon 2. U Tin Yu A.E 3. U Zaw Min Oo S.S.A.E 4. Daw Khin Si Si Hlaing 5. U Sein Lwin E.S 6. Daw Lwin Mar Kywe 7. U Thet Wai Htun A.E Director Office Hydrology Branch, Yangon B-67

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18 Discharge Measurement Summary Site Information Site Name Toe River Station Number 1 Location Toe Date Measured: Monday, March 18, 2013 Measurement Information Party Hydro Boat/Motor Boat Meas. Number 1 System Information System Setup Units System Type Serial Number Firmware Version Software Version RS-M Transducer Depth (m) Salinity (ppt) Magnetic Declination (deg) Distance Velocity Area Discharge Temperature m m/s m2 m3/s degc Discharge Calculation Settings Track Reference Bottom-Track Depth Reference Vertical Beam Coordinate System ENU Left Method Right Method Top Fit Type Bottom Fit Type Sloped Bank Sloped Bank Power Fit Power Fit Discharge Results Width (m) Area (m2) Mean Speed (m/s) Total Q (m3/s) , , Measurement Results Tr # 1 L Time 3:16:36 PM Time Exposure Time: 0:13:29 Distance Mean Vel Duration Temp. Track DMG Width Area Boat Water Left 0:13:29 Mean Std Dev COV Tr1= r.rivr; Comments Tr1= r.rivr - 52 cm; Compass Calibration Results: PASS Score is excellent. Magnetic interference is very low. Calibration score: M7.00Q9 System Test System Test: PASS , , Discharge Right Top Middle Bottom Total , , , , % MBTotal Measured Parameters and settings marked with a * are not constant for all files. Report generated using SonTek RiverSurveyor Live v2.70 B-69

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24 Discharge Measured byriver Surveyor M 9at ToeRiver Preparingto measure Discharge byriver Surveyor M9 B-75

25 Settingthe computer to measure dischargebyriver Surveyor M9 Water Level Post of KyaeikHtawWater Level Gauge Station B-76