online_sediment_51:   Calculation of reservoir design life


Formulas for sediment yield

For Q < 2:

S = 1280 Q0.46[1.43 - 0.26 log(A)]

For Q ≥ 2:

S = 1965 e-0.055Q[1.43 - 0.26 log(A)]

[ Q (in),  A (mi2),  Y (tons/mi2/yr) ]


Reference



INPUT DATA:

Select:      

Choose SI or U.S. Customary units:

Reservoir capacity V (hm3) [ac-ft]:       

Catchment area A (km2) [mi2]:       

Mean annual runoff Q (mm) [in.]:       

Sediment yield S (M. tons/km2) [tons/mi2]:       
[ Leave blank if you want the program to calculate S ].

Specific weight of sediments W (N/m3) [lbs/ft3]:       

Sediment size:      

Number of discrete intervals n:     
[ Leave blank if you want the program to set default n = 10 ]

OUTPUT:

iReservoir
capacity
(hm3)
Accumulated
sediment
deposits
(hm3)
C/I
ratio
Average
C/I
ratio
Trap
efficiency
(%)
Time
to fill
(yr)
Cumulative
time
(yr)
00000000


            

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