128 results found.
. There are effectively three sub-types of the Hypothetical Storm: Area-Dependent Pattern, SCS, and a highly flexible User-Specified Pattern. The Hypothetica …
a time interval t to t+, the excess, , during the interval is given by: p e_{t}=\left\{\begin{array}{cc}p_{t}-f_{c … . Typically, this parameter is equated wi …
surface into the snowpack. Snow surface heating varies dramatically over the course of a day and over longer time … on a daily time scale. Temperature variati …
the previous time step. If the computed snow melt exceeds the available SWE, the melt is reduced to the available SWE … the previous time step's ATI in the c …
option. Default time-area histogram may be inappropriate for use within some watersheds (though, a user-specified time-area histogram can be used). When …
meaning when it is greater than twice the lag time. These parameters are most often estimated using observed data … Basic Concepts The Straddle Stagger metho …
selected the basin lag, tp, peak discharge per unit area, qp, and total time base as the critical characteristics … , is related to the basin lag, tp, by : t_{ …
. Requires more parameters than the Green and Ampt method. SCS Curve Number Simple, predictable, and stable …
be modeled in HEC-HMS, overtop and piping. For both types of breach methods, a trigger method, development time … , and how the breach develops during the deve …
to turn on, it must stay on for a minimum run time. The pump operation can also be constrained to stay on or off for a minimum length of time by setting a min …