Apply Theisen Polygon Method to Calculate Aerial Rainfall for a Catchment. Draw an irregular shape of catchment within t
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Apply Theisen Polygon Method to Calculate Aerial Rainfall for a Catchment. Draw an irregular shape of catchment within t
Apply Theisen Polygon Method to Calculate Aerial Rainfall for a Catchment. Draw an irregular shape of catchment within the rectangular boundary (covering at least 70% of the plot). There are 5 rainfall stations (Triangle) located within the plot, with the rainfall values. The dotted lines indicate the drainage/river alignments. Arrow shows the flow direction, for which you have the freedom to locate the outlet at any boundary/location of the rectangular plot boundary. While the catchment boundary is drawn, two rainfall stations should be left out of the catchment, as shown in the sample drawing below: 500 m 37 mm A ♡ 300 m 46 mm Figure 1: Sample arrangement of catchment boundary and rainfall stations. Each student should draw similar drawing on his/her own idea. Each student should draw his/her own catchment boundary. You have the freedom to locate the Rainfall Stations and the rainfall values LOGICALLY as you like, but there should be 5 stations. When you draw the catchment, use graph paper and calculate the area of each part using the square method.
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