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Home , Danubyu, Dedaye, Einme, Kamayut township, Kyonpyaw, Nyaungdon

Water Quality of the Ayeyarwady Delta, using GIS-based Mapping and Analysis

Kay Thwe Hlaing *, Shigeko Haruyama *, MiyaokaKuni Hide**, Maung Maung Aye *** * Graduate School of Bioresources, Mie University,1577 Kurimachiyacho, Tsu City, Mie Pref., Japan ** Graduate School of Education, Mie University,1577 Kurimachiyacho, Tsu City, Mie Pref., Japan ** Geography Department, University of , Pyay Road, Kamayut Township, Myanmar

Introducation regional water quality of the middle Part of the Ayeyarwady Delta was mapped for key inorganic The study area of the Ayeyarwady River Delta is chemical determinants using a GIS System and Field located at the southwestern part of Myanmar. It lies Survey database. between north latitudes of the 16º 41' 41" and 17º 22' 38". The northern part of the Region lies between east Results longitudes of 94º 42' 49" and 96º 11' 23".According to 95°0'0"E 96°0'0"E 95°0'0"E 96°0'0"E Zalun Waw Waw ! Bago ! Bago the climatic records, the average monthly temperatures Taikkyi Kyonpyaw Taikkyi . Danubyu Thanatpin . Thanatpin Hlegu Kawa Kyaunggon Hmawbi Kawa Tharbaung ! Hmawbi Tharbaung ! ! Nyaungdon ! ! ! ! Htantabin ! Htantabin ! ! Pantanaw! ! ! !! !! !!!! !! !! ! ! ! ! 17°0'0"N 17°0'0"N 17°0'0"N ! 17°0'0"N of January, April and July at are 24ºC, over Einme ! ! ! ! ! ! ! ! Pathein !!! Pathein ! !! ! Maubin !!Dalla Maubin !Dalla Twante Twante ! !! Wakema 30ºC and, 27ºC respectively Ngaputaw Kawhmu Ngaputaw Kawhmu Kungyangonn Kyeiklat Kungyangonn Kyeiklat Legend Dedaye Legend Mawlamyinekyun Mawlamyinekyun pH Bogale Pyapon EC (S/cm) ! ! 50.9 164.5 5.4 Laputta Laputta ! ! 5.5 7.0 164.5 476.0 ! ! 7.1 7.5 476.0 1641.0 ! 7.6 8.0 ! 1641.0 3010.0

16°0'0"N Gulf of Mottama 16°0'0"N

16°0'0"N Gulf of Mottama 16°0'0"N ! 8.1 8.6 ! 3010.0 7040.0 Rivers Rivers Coastline Coastline Kilometers Kilometers 012.5 25 50 75 100 Roads 012.5 25 50 75 100 Roads 95°0'0"E 96°0'0"E 95°0'0"E 96°0'0"E

95°0'0"E 96°0'0"E 95°0'0"E 96°0'0"E Zalun Zalun Waw Waw ! Bago ! Bago Kyonpyaw Taikkyi Kyonpyaw Taikkyi . Danubyu Thanatpin . Danubyu Thanatpin Hlegu Hlegu Kyaunggon Kawa Kyaunggon Hmawbi Kawa !! Hmawbi !! Tharbaung Nyaungdon Tharbaung ! Nyaungdon ! ! ! ! ! Htantabin ! Htantabin ! Pantanaw ! Pantanaw! !! ! !!! !! ! !!! !! ! ! ! ! 17°0'0"N 17°0'0"N 17°0'0"N Einme 17°0'0"N Einme ! ! ! ! ! ! !! ! Pathein ! Pathein ! ! ! Maubin !Dalla!! Maubin !Dalla!! Twante ! Twante !!! !!! Wakema Wakema Ngaputaw Kawhmu Ngaputaw Kawhmu Kungyangonn Kungyangonn Kyeiklat Dedaye Legend Kyeiklat Dedaye Legend Mawlamyinekyun Mawlamyinekyun Bogale Pyapon Br (mg/l ) Bogale Pyapon Cl (mg/l ) ! 0.0 ! 1.2 33.0 Laputta Laputta ! 0.1 0.5 ! 33.1 146.2 ! 0.6 0.8 ! 146.3 312.8 ! 0.9 1.5 ! 312.9 784.0 16°0'0"N 16°0'0"N Gulf of Mottama 16°0'0"N Gulf of Mottama 16°0'0"N ! 1.6 5.5 ! 784.1 1966.3 Rivers Rivers Coastline Coastline Kilometers Kilometers 012.5 25 50 75 100 Roads 012.5 25 50 75 100 Roads 95°0'0"E 96°0'0"E 95°0'0"E 96°0'0"E The large range in δ18O values suggests not only the heterogeneity of the recharge conditions in the shallow

aquifers, but also a possible mixing with enriched Fig.1 Study Area waters that could be in the deeper aquifers. The

PO 4concentrations in the river water are very high Purpose of the Study because there is no wastewater treatment system in this The purpose of this study is to analysis on the spatial region yet. In the interests of the health of local distribution of chemical and physical properties of the residents it is necessary to add sewage treatment. The collected water using Geographic Information Systems high NO concentration in the water samples indicates and compared with WHO standard. 3 that the shallow aquifer near settlements is already Materials and Methods challenged by the problem of pollution related probably Database of the water samples for the the middle Part with the decomposition of household wastes. From the of the Ayeyarwady Delta were collected from 06th to geomorphology it is to suggest that the ponds in the 09th January 2010. Most water samples were taken study area are mainly recharged by shallow with a bucket the surface water from wells, reservoirs groundwater. High salinity of the ponds water is caused and rivers. We were measured through EC and pH in by intrusions of river water. the field and iron concentrations, isotopic and deuterium composition of all water samples are Miyaoka,K., Haruyama,S., Hlaing, K.T., and Kuzuha, Y., analyzed. Chemical water analysis included the 2009. Assessment Physical and Chemical Characteristics of Groundwater in the Ayeyarwady River Delta, Myanmar, determination of PO 4, NO 2, Br, NO 3, SO 4, HCO 3, NH 4, K, Mg, Cl, Na, EC, pH, 18 O and tritium isotopes. The Poster of International Geographical Union.