FIELD DATA REQUIREMENTS 

 The required inputs to the WETP program for each cross-section are: 



1. Three sets of stage-discharge data measured at a high, intermediate and 

 low flow. The stage height at zero flow (zf) is mandatory only when the 

 program is applied to non-riffle areas. 



2. The cross-sectional profile which consists of channel elevations 

 (vertical distances) and the horizontal distance of each elevation 

 measurement from the headstake Czero point). Up to 150 sets of 

 measurements per cross-section are accepted hy the program. 



The following are needed to document field work: 



1 . Slides or photographs of the study area and cross-sections at the time 

 field data are collected. 



7. Field notebooks containing all surveying data, notes and calculations, 

 recorded in a neat, consistent manner. 



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