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Greetings Fellow Hydrology and Hydraulics Modeler!
In this issue we are featuring
a new release of a FREE Hydrology Program, now available by download from
our web site: NSS - The National Streamflow Statistics Program. We also feature two of our most popular Hydrologic and Hydraulic modeling library CDs: The
Riprap Stream Bank Protection Design Program and The WRCS H&H Software Suite (24+ H&H Program Packages).
We also have information on the latest HEC software releases and H&H Software
training being offered through ASCE. Please visit our web site for additional software programs, including
numerous other FREE SOFTWARE DOWNLOADS.
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Free Software:
NSS: The National
Streamflow Statistics Program

Floodflow Frequency Plots and
Hydrographs for Ungaged Watersheds
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Estimates of streamflow statistics
are used for a variety of water-resources and emergency planning, management,
and regulatory purposes, and for design of structures such as bridges and
culverts. These estimates are often needed at ungaged sites where no observed
flood data are available.
To provide simple methods of
estimating streamflow statistics, the U.S. Geological Survey (USGS) has
developed and published regression equations estimating the magnitude and
frequency of floods for every State, the Commonwealth of Puerto Rico, and a
number of metropolitan areas in the United States, and regression equations for
estimating other streamflow statistics are available for many states. These
equations have been compiled into the National Streamflow Statistics (NSS)
Program.
NSS is a Visual Basic program that
can be used to:
1. Obtain estimates of various streamflow statistics for sites in rural ungaged
basins.
2. Obtain estimates of flood frequencies for sites in urbanized basins.
3. Obtain indicators of the errors associated with the estimated streamflow
statistics.
4. Obtain estimates for ungaged sites by use of the Region-of-Influence method.
5. Estimate maximum floods based on envelope curves developed by Crippen and Bue
(1977).
6. Create hydrographs of estimated floods for sites in rural or urban basins.
7. Create flood-frequency curves for sites in rural or urban basins.
8. Obtain improved flood-frequency estimates for gaging stations by weighting
systematic flood record estimates with estimates from regression equations.
9. Obtain improved flood-frequency estimates for ungaged sites by weighting
regression equation estimates with estimates obtained from upstream or
downstream gaging stations.
10. Save output from the program in text and graphic files.
11. Obtain documentation and instruction for use of the program from help files.
The NSS Program is available for FREE by download from the Free
Software page of the WRCS H&H Software
Shop web site.
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The WRCS H & H Software Suite

24+ Hydrology and Hydraulics Software
Program Packages on One CD
Over two dozen hydrologic and hydraulic software program packages, developed for various applications in water
resources engineering, have been compiled on this single CD. All of these programs, along with all of their documentation files, are included in the WRCS H&H Software Suite:
HYDROLOGY:
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ANNIE is a program designed to help users interactively store, retrieve, list, plot, check, and update
spatial, parametric, and time-series data for hydrologic models and analyses.
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HEC-DSS (including the new DSS Vue Program) stores data in a fashion convenient for inventory,
retrieval, archiving and model use. The DSS was primarily designed for water resource applications.
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HSPF (Hydrological Simulation Program - Fortran) simulates for extended periods of time the hydrologic, and
associated water quality, processes on pervious and impervious land surfaces and in streams and well-mixed impoundments.
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HYSEP - Hydrograph separation program performs hydrograph separation, estimating the ground-water, or base
flow, component of streamflow.
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PeakFQ - Performs flood-frequency analysis based on the guidelines delineated in USGS Bulletin 17B
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SITES software is a descendent of the DAMS2 program. DAMS2 was a full-featured rainfall-runoff routing
program developed for watershed dam design and analysis.
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SMADA (Stormwater Management and Design Aid) - This software is a complete hydrology package included as a
number of separate executable files.
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SWMM (Storm Water Management Model versions 4.4
and 5) - This Rainfall Runoff Model is a large, complex model
capable of modeling the movement of precipitation and pollutants from the ground surface through pipe and channel networks, storage treatment units, and finally to receiving waters.
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SWSTAT (Surface-Water STATistics) - contains a number of options for statistically analyzing time-series
data.
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TR-20 (SCS Technical Release No. 20) - Computer Program for Project Formulation Hydrology is a physically
based watershed scale runoff event model.
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TR-55 - Urban Hydrology for Small Watersheds (SCS Technical Release 55) presents simplified procedures to
calculate storm runoff volume, peak rate of discharge, hydrographs, and storage volumes required for floodwater reservoirs.
HYDRAULICS:
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CAP (Culvert Analysis Program) follows USGS standardized procedures for computing flow through culverts
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CHAMP (Coastal Hazard Analysis Modeling Program) is a program for performing coastal hazard assessments of
fine-scale wave phenomena associated with hurricane storm surges or northeaster flooding effects.
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CHANLPRO numerical modeling
system addresses three areas pertinent to the design of channel protection: 1)
U.S. Army Corps of Engineers design guidance for riprap placement in
channels, 2) guidance for the design of gabion mattresses, 3) guidance for
estimating scour depth in erodible channels.
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CHECK-RAS is a program designed to verify the validity of an assortment of parameters found in the HEC-RAS
hydraulic modeling program.
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FAN aids in the evaluation and mapping of flood hazards on alluvial fans.
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Flo2DH is a two-dimensional finite element surface water computer program that can compute the direction of
flow and water surface elevation in a horizontal plane.
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HY-8 Culverts automates the design methods described in the Federal Highways Administration (FHWA)
publications HDS-5, "Hydraulic Design of Highway Culverts," HEC-14, "Hydraulic Design of Energy Dissipators for Culverts and Channels," and HEC-19, "Hydrology."
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Quick-2 is the latest version of a hydraulic analysis program used to compute water-surface elevations in
open channels of all types.
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RASPLOT produces plots from Corps of Engineers HEC-RAS program output files for use in FEMA Flood Insurance
Studies.
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RUNUP is a DOS-based program for wave runup computation.
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WHAFIS (Wave Height Analysis for Flood Insurance Studies) is a DOS-based program that uses representative
transects to compute wave crest elevations in a given study area.
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WRAS is a conversion program that takes existing WSP2 data sets and converts them in HEC-RAS format for
import into HEC-RAS.
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WSPRO is a water surface profile computation model that can be used to analyze one-dimensional,
gradually-varied, steady flow in open channels.
This CD library collection is available on one CD for only $45. For a more detailed description of each program,
go to our WRCS Hydrology & Hydraulics Software Suite web page. |
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HEC
Software Latest Releases

US Army Corps of Engineers
Hydrologic Engineering Center Software |
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HEC continues to enhance and
introduce new products. Here are the latest releases from the Hydrologic
Engineering Center of the US Army Corps of Engineers:
•
HEC-HMS, Hydrologic Modeling
Systems, Version 3.3.
Two new simulation features were added to the HMS Version 3.2 software. They
include: a new option in the SCS Unit Hydrograph transform method and a simple
reservoir evaporation option. In addition, as with any new release, the
identification and repair of a number of bugs also took place.
• HEC-SSP, Statistical Software Package,
Version 1.0.
This initial release of the HEC-SSP software begins to replace the multiple DOS
based statistical applications that HEC has supported for years. Version 1.0 can
perform flood flow frequency analysis based on Bulletin 17B, "Guidelines for
Determining Flood Flow Frequency" (1982).
• HEC-ResSim, Reservoir System Simulation, Version 3.0.
While the latest version of HEC-ResSim, the Reservoir Simulation model, has not
yet been released, it is expected very soon. The next release of HEC-ResSim,
Version 3.1, has been in development for almost two years. Beta testing began
last summer and is almost complete. Included in this release are several new
features as well as some great enhancements to existing features. Most of these
developments have been made possible through some unique interagency projects
and resource sharing.
Other
software that is expected to be released in 2009 include HEC-FIA, Flood Impact
Analysis, with its loss-of-life capabilities and the new Watershed Analysis
Tool, HEC-WAT, (which includes HMS, RAS, SSP, ResSim, EFM and FIA software).
Detailed descriptions of all of
the HEC Programs are available on our
HEC Programs web page.
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ASCE
CONTINUING EDUCATION
WORKSHOPS & SEMINARS
*****
Dam Breach Analysis Using HEC-RAS
May 6-8, 2009
Charleston, SC
http://www.asce.org/conted/seminars/seminar.cfm?cat=4#abc328abc
*****
Low Impact Development (LID) Applications for Water Resource Management
May 7-8, 2009
Nashville, TN
http://www.asce.org/conted/seminars/seminar.cfm?cat=4#abc29abc
*****
HEC-RAS Computer Workshop
May 13-15, 2009
Sacramento, CA
http://www.asce.org/conted/seminars/seminar.cfm?cat=4#abc113abc
*****
HEC-HMS Computer Workshop
May 14-15, 2009
Pittsburgh, PA
http://www.asce.org/conted/seminars/seminar.cfm?cat=4#abc112abc
*****
Sediment Transport Analysis Using HEC-RAS
May 27-29 , 2009
Houston, TX
http://www.asce.org/conted/seminars/seminar.cfm?cat=4#abc885abc
*****
Pumping Systems Design for Civil Engineers
May 28-29, 2009
Atlanta, GA
http://www.asce.org/conted/seminars/seminar.cfm?cat=4#abc121abc
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