WATER 



Sediment Budget Boundary 



Top of Cliff 



LAND 



ERODING SHORELINE-PLAN VIEW 



(Not to Scale ) 



Budget Boundory 



r*1 Recession 



SECTION A-A 



(Not to Scale) 



Seaward Limit of 

 Active Erosion 



Assumptions 



Budget Calculations 



Q^ = 100,000 m^/yr 



+ -> 



q2 = 1 m^'/vr./meter 



_ o 



q. = 0.5 rrT^/vr/meter 

 ,b = 1 0,000 meters 



Figure 4-43. 



Using Equation 4-60 



Sum of Sources - Sum of Sinks = 



Find Q^ (Q^ + Q^"^) - (Q^ + Q*") = Q 



(Q^ + qj b) - (Q^ + q;; b( = 



(10^+ 1.0 X 10^) - (Q^ + 0.5 X 10'') = 



Q^ = 110,000-5,000 



Q^ = 105,000 m^/yr 



Basic example of sediment budget. 



4-116 



