ITie following diagrams illustrate the methodology used for 

 charting the talus beds. 



(1] Line of measured distance (waterline to talus bed-revetment bor 

 der) (d^) and width of talus bed (d^) was drawn on quadrangle 



paper (1 cm = 2.4m) 



waterline 



(2) The next line (distance between revetment measurement points) was 

 then plotted in the form of circle with that distance (d-^) as the 

 radius . 



waterline 



(3) The length of the second revetment measurement (d ) was then 



plotted to where it intersected the circle. This gave the dis- 

 tance between measurements at the waterline (d^) which could be 

 converted for three-dimensional diagraming. 



68 



