LWI Region 5 Mermentau Headwaters - Mermentau River at Mermentau HEC-HMS Model: Historic Event scaled to 200-Year Design Storm

This watershed simulation models a 200-year design storm for the KCDA Mermentau River at Mermentau (MH_MerR_00_G). The August 2016 historical tropical storm scaled by a factor of 1.60 to represent the 200-year 48-hour design storm precipitation volume was used as the meteorological input to the HMS model. Results of this simulation are applied as inputs to the LWI Region 5 Mermentau Headwaters HEC-RAS Model 200-year design storm simulation over MH_MerR_00_G. Basin: B_CalibratedBase - Tc, None. Meteorology: MR00G_200YR_AUG2016_SF1.6V2, None. None. HMS 4.12

Model Software Version

HEC-HMS version 4.12

Model Application

LWI Region 5 Mermentau Headwaters – Design Storm HMS Model

Simulation Type

SCENARIO

Input Files

Title Description Location
Meteorologic File Configuration for precipitation, evapotranspiration, and snowmelt data. /LWI_Mermentau_HW/MR00G_200YR_AUG2016_SF1.6V2.met
Forecast File Forecast alternatives properties including start and end times, blending controls, and parameter adjustments. /LWI_Mermentau_HW/Forecast/MR00G_200YR_AUG2016_SF1.6V2.forecast

Output files

Title Description Location
Output DSS File Stores simulation hydrologic and hydraulic results at junctions, reaches, sources, diversions, and sinks /LWI_Mermentau_HW/MR00G_200YR_AUG2016_SF1.6V2.dss

Parameters

Parameter Value
Canopy ['None']
LossRate ['Gridded Deficit Constant']
Transform ['Modified Clark']
Baseflow ['Recession']
Route ['Muskingum Cunge']
Precipitation Method Gridded Precipitation

Temporal extent
3000-07-31
3000-08-05

Temporal resolution

5 Minutes

Resource Files

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Metadata record information

Created By hdr_lwi_region_5@hdrinc.com
Created At 2025-06-03t00:38:55.300114+00:00
Access Level Public
Is Reviewed True
Owner hdr_lwi_region_5@hdrinc.com