{
    "_id": "6849ce6921ebbc8b50227739",
    "title": "LWI Region 5 Mermentau - Bayou Queue de Tortue at River Station 5 HEC-RAS Simulation: Historic Event Scaled to 50-Year Design Storm",
    "description": "This simulation represents the 50-year design storm event for the Ungaged Bayou Queue de Tortue at River Station 5 (ME_BQTQ_005_UG) KCDA area. The event is based on the August 2016 historical tropical storm scaled to the 50-year 24-hour design storm precipitation volume. The storm critical duration was determined by modeling the gridded precipitation over the KCDA area and identifying the peak flow leaving the KCDA area for a variety of storm lengths. To match the design storm volume, the August 2016 historical storm was configured with a 0.80 scale factor for KCDA ME_BQTO_005_UG. The model simulation was created in HEC-RAS Version 6.5. This represents the 2017 to 2019 existing conditions Mermentau geometry with calibration regions configured for validation as an average of calibration events. The simulation includes: a constant boundary inflow hydrograph for the Mermentau River based the 50th percentile flow of 500 cfs; design storm precipitation based on scaling of the August 2016 storm event; a constant mean high high water variable downstream tidal boundary condition; a constant downstream stage hydrograph of constant 50th percentile of 2.49 ft (NAVD88) at the Gulf Intracoastal Water Way derived from USACE Gage #76800, and infiltration over the watershed. The initial simulation time step is 5 seconds with the control by courant condition option enabled, allowing HEC-RAS to adjust the timestep as condition warrant during the simulation. This model is most applicable from river station 5 (ungaged) of Bayou Queue de Tortue to river station 20 of Bayou Queue de Tortue.",
    "model_software": "/model_software/697b9ae81c0ec3cd420f29ce",
    "model_application": "/model_application/68486035c27036f18e73f16f",
    "type": "SCENARIO",
    "input_files": [
        {
            "title": "Boundary Condition File",
            "description": "Stores boundary condition information for simulation ",
            "location": "/ME_BQTO_005_UG/Mermentau_DS.b04"
        },
        {
            "title": "Initial Conditions File",
            "description": "Stores all configured hydraulic initial conditions for running simulation",
            "location": "/ME_BQTO_005_UG/Mermentau_DS.ic.o04"
        },
        {
            "title": "Unsteady Flow File ",
            "description": "Stores user-defined flow options, initial conditions and hydrographs are stored",
            "location": "/ME_BQTO_005_UG/Mermentau_DS.u04"
        },
        {
            "title": "Plan File",
            "description": "Contains a list of associated input files and all simulation options ",
            "location": "/ME_BQTO_005_UG/Mermentau_DS.p04"
        }
    ],
    "output_files": [
        {
            "title": "Unsteady Flow Log Output File",
            "description": "Stores the computational log and hydraulic solution error computations",
            "location": "/ME_BQTO_005_UG/Mermentau_DS.bco04"
        },
        {
            "title": "Plan HDF File",
            "description": "Contains plan level execution results that focuses on runtime statistics, convergence metrics, and execution status",
            "location": "/ME_BQTO_005_UG/Mermentau_DS.p04.hdf"
        },
        {
            "title": "DSS Output File",
            "description": "Stores time series hydraulics output for boundary conditions, 2D/SA connections, reference points and reference lines",
            "location": "/ME_BQTO_005_UG/ME_BQTO_005_UG_Aug2016_50yr_SF0p80/ME_BQTO_005_UG_Aug2016_50yr_SF0p80.dss"
        }
    ],
    "parameters": [],
    "temporal_extent": [
        "3000-08-01",
        "3000-08-04"
    ],
    "temporal_resolution": "5SEC",
    "_system": {
        "created_by": "hdr_lwi_region_5@hdrinc.com",
        "created_at": "2025-06-11T18:43:53.342951+00:00",
        "access_level": "public",
        "is_reviewed": true,
        "owner": "hdr_lwi_region_5@hdrinc.com"
    }
}