The standard hydrologic grid (SHG) is a grid system developed by USACE Hydrologic Engineering Center (HEC) to cover the conterminous United States for hydrologic modeling purpose in HEC-HMS. SHG is…
The standard hydrologic grid (SHG) is a grid system developed by USACE Hydrologic Engineering Center (HEC) to cover the conterminous United States for hydrologic modeling purpose in HEC-HMS. SHG is…
HEC-HMS frequency storm is a type of "nested" rainfall distributions, which can be built by using NOAA Atlas 14 precipitation depth data. If you want to reduce point precipitation depths…
Similar to SCS Type I, IA, II, and III or other NRCS "nested" rainfall distributions, HEC-HMS frequency storm method provides a way to construct your own "nested" rainfall distributions using…
HEC-HMS has the capability to estimate hydrology parameters for watersheds delineated. This post is to demonstrate these functions. The Bear Creek Watershed was delineated in Post 1 of 3 and…
After a watershed has been delineated using HEC-HMS GIS tools, the subbasins and reaches can be further refined using HEC-HMS merge and split functions. Five subbasins and two reaches were…
The new HEC-HMS published around 2020 has some useful GIS tools to delineate a watershed using terrain data. Unlike HEC-GeoHMS, these standalone GIS commands are an integral part of HEC-HMS…