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Numerical Models Meeting the Minimum Requirement of NFIP

Current Locally Accepted Hydraulic Models

Hydraulic Models: Determination of Water-surface Elevations for Riverine Analysis

Hydraulic Models: Determination of Water-surface Elevations for Riverine Analysis
PROGRAMDEVELOPED BYAVAILABLE FROMCOMMENTS
One-Dimensional Unsteady Flow Models
ICPR v.3.10 with PercPack OptionStreamline TechnologiesStreamline Technologies, Inc.
1900 Town Plaza Ct.
Winter Springs, Florida
32708-6208

www.streamnologies.com		Add-on to ICPR, modeling the interactions between surface water systems and the groundwater table. Must follow FEMA "Guidelines for Estimation of Percolation Losses for NFIP Studies" in using the model to simulate percolation process.

Only accepted for usage in FEMA Region IV.

Public Domain: No
NETWORK
(Jun. 2002)		Southwest Florida Water Management DistrictEngineering Section
Resource Management Department
2329 Broad Street
Brooksville, Florida
34604-6899		Interconnected ponds and channels routing model.

Only accepted for usage within Southwest Florida Water Management District. 

Public Domain: Yes
CHAN for Windows v.2.03
(1997)		Aquarian Software, Inc.Aquarian Software
1415 Briercliff Drive
Orlando, Florida
34604-6899		Calibration or verification to the actual flood events is highly recommended.

Floodway concept formulation is unavailable. Encroachment stations can be specified in editor to cut off section.

Only accepted for usage within Southwest Florida Water Management District. 

Public Domain: No
MIKE URBAN
Collection Systems
(MOUSE)
Release 2009,
dated June 2010		DHI Water and EnvironmentDHI, Inc.,
319 SW Washington St.,
Suite 614,
Portland, OR 97204		MIKE URBAN has the capability to analyze storm sewer networks. Flow conditions associated with weirs, orifices, manholes, detention basins, pumps, and flow regulators can be reflected. Weirs located within the closed conduit have to be modeled as orifices. MOUSE does not independently have the capability to model overland flows; overland flow can be analyzed by coupling MIKE 11 and/ or MIKE 21. Floodway modeling capability is not available. The compliance of the hydrology module of MOUSE is not determined. Calibration to actual flood events is required.

Only Accepted for usage within areas administered by FEMA Region III (DC, DE, MD, PA, VA and WV)
Two-Dimensional Unsteady Flow Models
S2DMM
(Feb. 2008)		Tomasello Consulting Engineers, Inc.Tomasello Consulting Engineers, Inc.
5906 Center Street
Jupiter, FL 33458		Applicable to a network of rectangular grids. Capable of routings on natural overland sheetflow areas and water management systems with cascading lakes and channels. Computing runoff from either daily or hourly rainfall with design distributions, using SCS formula with soil storage and soil moisture updated on daily basis. Stage/storage, sheetflow cross sections, and soil types are represented in each computational grid entered via GIS. HEC-2 type cross sections can be entered on specific channel grids and minor channels can be embedded on general grids. Evapotranspiration computations are based on seasonal factors and soil moisture of unsaturated and saturated zones. Interactions with the subsurface conditions are handled by MODFLOW routines. Capable of simulating continuous hydrologic conditions. Cannot compute regulatory floodway.

The model must be calibrated to observed flow and stage records or high-water marks of actual flood events at both channel and floodplain.

Only accepted for usage in the South Florida Water Management District.

Public Domain: No
TUFLOW
Release Version
2010-10
(October 2010)		BMT WBMBMT WBM
www.bmtwbm.com 
Suite 120
8200 S. Akron Street
Centennial
Denver, CO 80112
United States

Software info:
www.tuflow.com 

Aquaveo
www.aquaveo.com
3210 N. Canyon Road
Suite 300
Provo, Utah 84604
United States		The Program is accepted for use in FEMA Region III.

TUFLOW is flood simulation software that simulates the hydrodynamics of water flow using the complete 2D and 1D free-surface flow equations. It includes a wide range of options for modeling structures and urban pipe networks, and for dynamic linking of 2D and 1D solutions.

The program is applicable to riverine flooding, dambreak inundation, urban overland and pipe network flows, and coastal inundation from surges and tsunamis.

The model must be calibrated to observed flow and stage records or high-water marks of actual flood events at both channel and floodplain.
Currently floodway concept formulation is not available.
Two-Dimensional Steady/Unsteady Flow Models
DHM 21 and 34
(Aug. 1987)		Theodore V. Hromadka II and
Chung-Cheng Yen		Hromadka & Associate
Costa Mesa, California		Diffusion flow model that can route unconfined surface and open channel flows. Can be used to model alluvial flooding. Rainfall-runoff output can be used for hydrologic studies. Kinematic routing optional. Floodway concept formulation unavailable. Calibration to actual flood events is recommended.

The model must be calibrated to observed flow and stage records or high-water marks of actual flood events at both channel and floodplain.

Only accepted for usage within the San Bernardino County Flood Control District, California.

Public Domain: No

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Nationally Accepted Models

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Numerical Models No Longer Accepted

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Last Modified: Thursday, 07-Apr-2011 16:50:44 EDT