The FHM is an "integrated" hydrologic model that simulates the full water budget of the surface and ground water systems. This tool, developed after more than twelve years of research and testing, allows for more thorough investigation of the interaction between the surface water and ground water processes than traditional stand-alone surface or ground water models with simplistic "add on" packages. Basically, the FHM is made of two public domain components: HSPF and MODFLOW. HSPF (Hydrological Simulation Program - FORTRAN), supported by EPA and USGS, simulates the surface water system including basin, reach and reservoir water budgets. MODFLOW, supported by the USGS, computes aquifer flows and storages. Integration codes were written to link the two models together providing the critical processes and pathways that govern the vadose zone connecting the two domains. Additional codes and interface is provided to develop data requirements using an Arc/INFO GIS interface. This is an essential element of the FHM including other database tools as the data requirements of the model are extensive. Basin recharge, depth-to-watertable, stream/aquifer and combined evapotranspiration processes provide the integration pathways. Interaction is determined through the analysis of the surface and groundwater budgets subjected to a rainfall driven boundary condition. Surface water flows (e.g., streamflow) are completely runoff and baseflow (i.e., groundwater) dependent with the principle routing mechanism governed by storage attenuation. The FIPR hydrologic Model was developed from research funding provided by the Florida Institute of Phosphate Research (FIPR), the US Department of Interior Fish and Wildlife Service (USFWS), and the Southwest Florida Water Management District (SWFWMD).
The USF-HydQual 2D model is a two-dimensional hydrodynamic, water quality and scour/deposition model. The hydraulic engine consists of a two-dimensional numerical solution of the Reynolds equations of motion with first-order, non-linear closure for the turbulent friction terms. It allows for dynamic solutions (real time) of tidal or other rapidly varying flows including convective terms, baroclinic (density driven), and wind driven circulation. It uses a combination explicit/implicit solution technique using rectangular grids. Grid generation is assisted using Arc/INFO GIS utilities. The model has been successfully applied to address coastal circulation and storm dynamics, lake residual and wind driven flows. The water quality engine allows for real time eutrophication kinetics and transport with diffusion/dispersion processes. The nutrient constituents include complete nitrogen and phosphorous series with benthic exchange algorithms, chlorophyl a, total algae biomass, predation, self shading, and respiration routines. Particle tracking and conservative substance mixing algorithms are also included. This code was originally intended to provide quantification of cumulative and short-term water quality impacts of point and non point sources for Water Quality Based Effluent Limitations (WQBEL) permitting, marina flushing and other similar studies.The sediment scour/deposition components are design to evaluate constricted tidal inlet sediment dynamics. These subroutines have been employed to evaluate bridge pier scour safety and management options as well as variations in scour/deposit environments in tidal inlets where navigation channel alterations, dredge and fill, dock and marina placement, and/or shoreline stabilization options are proposed.
The USF-HydQual 2D model has been widely referred to previously as the "USF Tampa Bay Model". However, this is a misnomer as there exists many USF Tampa Bay models in 1, 2 and 3D. The USF-HydQual 2D model was developed and supported for over 30 years from research funding provided by the US Army Corps of Engineers (Corps), Tampa Bay Regional Planning Council (TBRPC), Florida Department of Environmental Protection (FDEP), and the Florida Department of Transportation (FDOT).
EPASWMM Link.
US Environmental Protection Agency CEAMS web site for SWMM model download.
HUBERSWMM Link.
University of Oregon web site for their SWMM model download.
EPAHSPF Link.
US Environmental Protection Agency CEAMS web site for HSPF model download.
Princeton Ocean Model Link.
Princeton University physical oceanography research group. Access to 3D Princeton Ocean Model.
Florida IDF Curves
A PDF file of FDOT Drainage Manual IDF curves, all zones. These are the same curves often used by SWFWMD and other water management districts for permitting. For revised IDF curves (not yet widely accepted) see the following web address:
Design Storm Type Distributions
A PDF file listing of the non-dimensional Type I,II,II-Modified and Type III rainfall distributions commonly used to construct design storm hyetographs. For a QuatroPro spreadsheet example click here.
Baseflow Separation Spreadsheet
A QuatroPro spreadsheet algorithm for separating USGS streamflow into baseflow and runoff components using the method by Perry (1997). Please note that this method tends to over-estimate groundwater fraction unless very long (greater than 60 day) averaging periods are used.
HydroGIS
Arc/INFO utilities to prepare hydrologic and topographic data for surface water, groundwater and integrated modeling simulation. Recommended for creating input files for the FHM.Model Links
BASINS Better Assessment Science Integrating Point and Non-Point Sources
USEPA Office of Water project to assess basins and effect on receiving water quality.
ANNIE Link
USGS utility for analyzing and displaying hydrologic data.
WDM Utilities
EPA time series management utility which can greatly assist hydrologic modeling of complex basins.