slopearea.sdsu.edu

Calculation of flood discharge
by the slope-area method

Instructions
INPUT DATA:


Stream (optional):  

Select:   

Enter reach length L:        

Enter reach fall F:             

Enter reach Manning's n:            

Enter Au :  

Enter Ad :  

Enter Pu :  

Enter Pd :  

Enter αu :   

Enter αd :   

RESULTS:

Press button to
or recalculate

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online calc
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critical constriction efficiency HJ ogee spillway Hazen-Williams parallel pipes three reservoirs
Creager rational slope-area linear reservoir storage indication 1 storage indication 2
Muskingum Muskingum-Cunge time-area Clark UH cascade of linear reservoirs
Blaney-Criddle Penman Penman-Monteith reference crop Thornthwaite Priestley-Taylor Penman-Monteith ecosystems
Gumbel Gumbel 2 Log Pearson Log Pearson 2 TR-55 graphical curve number
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Duboys Meyer-Peter Modified Einstein Colby 1957 Colby reservoir design life
DO sag DO sag analysis Oxygenation Salinity (EC to TDS)