Changes of the Waterway Network on the Eastern Bank of Chao Phraya River from 1907 to 2007 Terdsak Tachakitkachorn studies and identifies the changes of waterway network morphology by comparing the map of Bangkok in 1907 (Figure 10, 12) and the map of Bangkok in 2007 (Figure 11, 13). He categorises changes into three parts: the changes of waterway element, the changes of waterway network and the changes of the characteristics of the waterway.
The changes of the characteristics of waterway 1. Waterway to land: some waterways had been transformed into boundary land, indicating the property area or become part of the property (Figure 17). 2. Waterway to road: some temple moats and ditches along the road had been converted to be roads, alleys, and pathways (Figure 16).
The changes of waterway element: major canals after the capital establishment are mostly intact. Secondary canals, which are typically converted from dyke ditch landform of the orchard after the capital establishment, are partially left. Temple moats are mainly transformed to be parts of the land. Due to the changes of waterway elements, the waterway network disappeared with the emergence of the road network.
3. Waterway to land and road: some temple moats had been changed to be both land and road. Presumably, some parts of the waterway are outside the development area. 4. The changes of correlation between waterway and banks: the land-waterwayland relation that usually occurred in 1907 had changed to three different patterns: land-waterway-land, roadwaterway-road, and land-waterway-road.
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