|Irrawaddy River and the Delta.|
According to Professor Maung Maung Aye the Riverine Geological Expert holding a seminar at the “Public Forum for Strategic Environmental Valuation of Irrawaddy River Basin” held at Rangoon University’s Judson (Yuu-da-than) Centre, Irrawaddy Delata is losing 13 Sq-Km (5 Sq-miles) a year average from the dual causes of lower flow from Irrawaddy and rising sea level in the Gulf of Martaban (Moat-ta-ma).
According to Professor Maung Maung Aye his intensive studies of Irrawaddy Basin and the Delta shows that between 1925 and 1989 Irrawaddy had had a high rate of silt delivery to the Delta and the result is 8.7 Square Km per year average creation of new land in the Delta. But after 1990 till 2006 the rate of silt delivery from the dwindling Irrawaddy slowed down substantially while soil erosion from the rising sea level had accelerated.
“Just from the Delta’s land-area point of view there were two distinctive periods. From 1925 to 1989, because of silt settling from the Irrawaddy, the land area in Delta increased average 8.7 Sq-Km a year. Sea was basically pushed back down further south. But later the trend reverses and sea has been eating away the land from the southern end of Irrawaddy Delta since 1990,” said Professor Maung Maung Aye.
“Right now we are in the period of sea eating away the land. It started from 1990 and by 2006 the rate of land erosion becomes so much greater. It is like a never-ending battle between the giant river and the sea. From 1925 to 1989 the high-flowing river was winning and that was the only reason our Delta was expanding steadily. But, right now the sea has been winning as the river flow is gradually dwindling and the result is the Delta retreating back at the average rate of 13 Sq-Km a year,” added Professor Maung Maung Aye.
|The Confluence of Irrawaddy and Myitsone Dam.|
He also commented that since there are so many foreign-direct-investment projects starting on the valley plain of Irrawaddy their environmental impacts should be studied and the suitable implementations to reduce that impact should be included.
|Vast Irrawaddy Delta.|
|Monthly water surplus-or-deficit in the River Irrawaddy.|
|Suspended Myitsone Dam site.|
|Myitsone Dam Project model.|
Irrawaddy Waters and Ne Win's Gold Trees