Hydrology Software
Hydrology Software
(OP)
I have always gotten away with compex spreadsheets to do all of my hydrologic analysis. I typically work in southern california and typically work with the MOD Rat, modified rational method and rational method to do my hydrology studies. I usually do smaller land development projects where I need to size pipes, outlets, etc. I have decided that it may be time to graduate to some real software, but I can't make heads or tails of all the free, costs, and costs a lot software.
Does anyone have a preference on stormwater software and why?
SWMMM, StormNET, WMS, HEC HMS, Eagle Point, etc...
Does anyone have a preference on stormwater software and why?
SWMMM, StormNET, WMS, HEC HMS, Eagle Point, etc...





RE: Hydrology Software
My opinion...
For general and detailed hydrologic/hydraulic analysis and design (stormwater management and wastewater collection), I suggest using SWMM5 (Storm Water Management Model version 5). This is a completely free, open source, widely accepted, and widely used modeling system with a nice graphical user interface (GUI) available for MS Winows and compilable for other operating systems. It is easy to use and easy to learn. It is the primary software application I use for hydrologic, hydraulic, and water quality analysis, especially full system design - from single lot backyard channels to commercial complexes and residential subdivisions to complex watersheds of many square miles and different land uses. I use it for both hydrologic single storm event (10y 24h Type II, for example) and continuous watershed response simulation as well as simple and complex analysis/design. The user can choose from SCS/NRCS Curve Number, Green-Ampt, or Horton infiltration/runoff approaches. Open channels, closed conduits, curb/yard inlets, storage basins, weirs, orifices, and other hydraulic components are included in the model. It is very ease to learn and use (a tutorial is included), with excellent context-sensitive help. There are lots of example applications readily available for download and review/use. It is very stable software, never having crashed on me. It is equally applicable to stormwater management systems, sanitary sewer collection, and combined sanitary/stormwater sewers. I use it for roadway, culvert, channel, bioretention, basin, and other analysis, including design and subsequent permit application submissions.
For stand-alone culvert hydraulic analysis and design, I suggest using HY8 (FHWA Culvert Hydraulics). This is a completely free, widely accepted, and widely used software analysis package. The current version (7.0) with a nice graphical user interface (GUI) available for the MS Windows operating system. It is easy to use and easy to learn. Others you might try include FishXing (USFS), HLW (Dodson & Associates), and HydroCulv (HydroTools). These are all available for use at no fee. Only FishXing has features HY8 does not, but those are limited to aquatic habitat analysis (fish passage). SWMM5 can be used for stand-alone culvert hydraulic analysis and design as well.
For stand-alone non-eroding channel hydraulic analysis and design, I suggesting use HLW (Dodson & Associates Channel and Culvert Hydraulics) or ECMDS (North American Green's Erosion Control Materials Design Software). Both are available for the MS Windows operating system. HLW is available as freeware/trialware or by purchase (full version). The only difference between the HLW freeware/trialware and HLW full version that I can tell is printing, but you can copy and paste all analysis results so that's not much of a limitation! Still, HLW is very inexpensive (I think) and Dodson seems to be a good company, so you might wanna purchase it. ECMDS is freeware. Even though it is targeted at analysis of North American Green erosion blankets, you can also use it for other channel liner types (soil, riprap, vegetation). SWMM5 can be used for stand-alone channel hydraulic analysis and design as well, but doesn't directly perform depth-variable roughness analysis (though irregular/overbank channel flow analysis can be undertaken).
For stand-alone eroding channel hydraulic analysis and design, I suggesting use GSTARS2.1 (USBR Quasi-2D Channel Hydraulics and Sediment Transport), BriSTARS (FHWA Quasi-2D Channel Hydraulics and Sediment Transport), CCHE2D (NCCHE 2D Channel Hydraulics and Sediment Transport), or MMS (USGS 2D Channel Hydraulics and Sediment Transport). All are available for the MS Windows operating system. Make sure you use the GSTARS2.1 version as it has a pretty good GUI whereas later versions do not. I wouldn't use BriSTARS outside WMS as the interface is not user-friendly. Both CCHE2D and MMS have GUIs, but I think MMS is the much better GUI.
You can find links to all of these and more at "http://hhwq.blogspot.com"
...just my opinion.
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tsgrue: site engineering, stormwater
management, landscape design, ecosystem
rehabilitation, mathematical simulation
http://hhwq.blogspot.com
RE: Hydrology Software
http://www.bonadiman.com/software/unit.htm
or
http://www.aessoft.com/
For free, try HEC-HMS and HECRAS which are fairly commonly used across the country.
http://www.hec.usace.army.mil/
RE: Hydrology Software
They will do lots of other things though. In general, try the free programs first. Then try the lower cost programs such as HydroCad and Hydraflow next. Last, to save your money and sanity, go for the big bucks programs. They may offer better tech support but they don't do anything more than some of the free ones.
good luck
RE: Hydrology Software
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RE: Hydrology Software
RE: Hydrology Software
RE: Hydrology Software
What I found is that SWMM is a really nice program. However, it really doesnt seem built for commerical design work. What I mean is that for most "simple" projects, you can perform the complete analysis serveral times faster using something like Hydrocad. We purchased Hydrocad recently for that very reason. It is very efficient when it comes to designing ponds and applying various storm events to the model.
HEC-HMS is also a pretty good program. Its a little easier to setup than SWMM, but still more difficult (time consuming) than Hydrocad.
Lots of people use Hydraflow Hydrographs - but I have no experience with it. Being another piece of proprietary software, I'm sure it is built to perform basic analysis quick and efficiently.
If I was in the private sector working for myself I would own Hydrocad but would also keep HEC-RAS, and SWMM installed on my computer. I would likely use Hydrocad most often (for subdivisions and redevelopment projects), and HEC-RAS second for flood studies (unsteady breach analysis, etc). I would probably only resort to SWMM if I needed to model some type of odd storm event, or needed to perform some water quality analysis. Of course SWMM can do some hydraulics computations too... so thats another consideration.
RE: Hydrology Software
I generally make a distinction between "modelling software" and "design software." My definitions are that "modelling software is very robust and generally data intensive, but the results are very accurate (relative the the data you input of course). The design software is quick, fairly easy to use, and somewhat conservative providing generally acceptable results.
The benefits of SWMM are that it's hydraulics are based on volumes and time, using St. Venant's equations for dynamic flow through the system. That's about as far as I'm able to explain with respect to the hydraulic routines in SWMM, but the benefits of this type of calculation are that it essentially performs a "routing" through, not only your storage features, but through every structure in the model.
I've not used the basic EPA SWMM package although I've read that the latest version (I believe is 5.?) has a pretty good graphical interface and rivals the proprietary interfaces. I've used several of those and prefer the XP software version over other proprietary interfaces. I hope to try the new EPA SWMM soon and be able to get rid of the costly proprietary interfaces.
RE: Hydrology Software
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A commercial package you might be interested in is MIDUSS (http://www.alanasmith.com). I still suggest using SWMM5 as your standard analysis H&H software application, however. All software takes some time to learn, but most engineers I know have learned SWMM5 in less than a day and been efficient with it in a few days. I've tried HydroCAD, Hydraflow, StormCAD, HEC-HMS, HYDRAIN, and others. Years ago I used some of these for analysis/design, but haven't used any of them in at least the past 2 years as SWMM5 has developed into such a good package.
Again, only my opinion. You might find another software application more suits your needs.
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tsgrue: site engineering, stormwater
management, landscape design, ecosystem
rehabilitation, mathematical simulation
http://hhwq.blogspot.com
RE: Hydrology Software
RE: Hydrology Software
Chris Erichsen
GeoIntel GIS
WWW.GEOINTEL.COM
RE: Hydrology Software
RE: Hydrology Software
RE: Hydrology Software
Friends of mine have had some success getting the LA MODRAT method approved in Riverside County. That success has not been universal, however, as every City, town, hamlet and ground squirrel burrow in Riverside County seems to believe wheel reinvention is the state of the art. La Quinta is especially maddening.
Using LA MODRAT produces results comparable to the NRCS and SBUH unit hydrograph methods, on our experience. We use rhe published storm data in the Riverside County Hydrology Manual ( 1978) so results cannot vary appreciably regardless of the method used.
For routing through retention/detention ponds, trenches, etc.we use HydroCad or Hydraflow Hydrographs with good, and easy, success.
"This ain't rocket surgery for cryin' outside!"
good luck
RE: Hydrology Software
I've always liked hydrocad and HEC-1/HEC-HMS. I'll actually be in Davis, Ca next week taking a HEC-HMS at HEC.