Initial and Constant Loss Method and Deficit and Constant Loss Method are two common infiltration methods in HEC-HMS and they share the same underlying concept, simply put, after the "initial…
Initial and Constant Loss Method and Deficit and Constant Loss Method are two common infiltration methods in HEC-HMS and they share the same underlying concept, simply put, after the "initial…
HydroCAD and XPSWMM have the modified rational method built into the programs and it is very convenient to apply the method in either of the modeling tools. One or more…
For small drainage areas, the rational method is widely used to calculate peak flows of different drainage design levels to size storm sewer, inlets, culverts, and ditches. The rational method…
NOAA Atlas 14 provides the latest official U.S. precipitation frequency, depth and duration data. Visit this post to learn more about how to retrieve and utilize NOAA Atlas 14 data.…
XPSWMM is a popular 1D and 2D hydrologic and hydraulic modeling tool developed by Innovyze. Though originally XPSWMM was designed primarily to model storm sewer network system, it has gained…
XPSWMM is a popular 1D and 2D hydrologic and hydraulic modeling tool developed by Innovyze. Though originally XPSWMM was designed primarily to model storm sewer network system, it has gained…
A culvert is a closed conduit with a relatively short length connecting two open channels or water bodies. From a hydraulic analysis perspective, usually a culvert does NOT have too…
It is often required to evaluate the performance of a storm sewer system using multiple design storm events. Instead of running the same XPSWMM models using different single design storms…
NOAA Atlas 14 provides the latest official U.S. precipitation frequency (PF) estimates for selected durations and frequencies. For its introduction and basic application including point precipitation depth and temporal distribution,…
NOAA Atlas 14 provides the latest official U.S. precipitation frequency (PF) estimates for various durations and frequencies with lower and upper bounds of the 90% confidence interval. PF estimates including…