in Arc GIS it is possible to measure morphometric characteristics of a basin, but I face difficulty to compute the above parameters. How can I compute it? help help. Thank you.
In Arc GIS you can calculate the length of the main stream and the perimeter/basin length. Yoe have to open the attribute table of the stream layer. click on the "Table Options" tab then select the "Add Field" option there. Then in the "Add Field" dialogue box u may provide the name, type (double) and precision and click "OK". then the name provide u can bee seen in the attribute table as a column.Then go to editor tool bar and click on editor and select "start editing" and select the stream layer that u are going to edit. Then again open the attribute table of the stream and right click on the new column heading u created. Select the Calculate geometry from the drop down list. Then u may calculate the length of the stream by units u select there. Then click OK button and u may see the actual length of the strem in the column u created. Do the same for the Basin length.
Are these files helpful for you?
http://www.lakebasin.org/images/learning/Calculating%20Areas%20and%20Lengths%20in%20ArcGIS10.2.2_14Mar2015.pdf
http://www.ce.utexas.edu/prof/maidment/giswr2013/Ex4/Ex42013.pdf
In Arc GIS you can calculate the length of the main stream and the perimeter/basin length. Yoe have to open the attribute table of the stream layer. click on the "Table Options" tab then select the "Add Field" option there. Then in the "Add Field" dialogue box u may provide the name, type (double) and precision and click "OK". then the name provide u can bee seen in the attribute table as a column.Then go to editor tool bar and click on editor and select "start editing" and select the stream layer that u are going to edit. Then again open the attribute table of the stream and right click on the new column heading u created. Select the Calculate geometry from the drop down list. Then u may calculate the length of the stream by units u select there. Then click OK button and u may see the actual length of the strem in the column u created. Do the same for the Basin length.
I think you must have a single shapefile with all streams on it, without any discrimination. Therefore, you need do the stream order (e.g., Strahler order), which will allows you to identify the main stream channel and the affluent. Then you can just follow Tamasha Fernando said the rest.
I Hope it helps!
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