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Peter, The sooner the better! You'll have engineers all over the state cheering you. And yes, Hantush is the DEP-recommended methodology. Patrick C Garner Co., Inc. Northborough, MA

Read Vol III of the revised Stormwater Management regs (now a regulation, not a policy). Any infiltration device used to modulate a 10-year or greater storm must have mounding calcs performed. Patrick C Garner Co., Inc. Northborough, MA

In Massachusetts new stormwater management regs require that mounding calculations be performed under infiltration areas. HydroCAD does not do such calculations. Is there a simplified program commonly used that anyone can recommend? Patrick C Garner Co., Inc. Northborough, MA

A quick update: I just read the latest "draft" release by Massachusetts DEP on the new stormwater management regs & there's no discussion of "dynamic" modeling other than in a new section on exfiltration calculations. So it's back to the usual TR20 & TR55 methodologies. Patrick C Garner Co...

I'll let you know how this plays out as I learn more... Thanks. Patrick C Garner Co., Inc. Northborough, MA

I work in Massachusetts and sit on a DEP technical advisory committee for stormwater. A subcommittee has been working on that issue, & is expected to release final recommendations in the fall. Whether they will list "approved" software is doubtful, as that hasn't occurred in the past.At this...

Peter, See the latest CE News (July 07), page 35. Seeing that article prompted me to ask. They refer to two tiers of software, one that is a "fully valid hydraulically dynamic model," and one that is a "simplified routing method." My understanding is that HydroCAD is the latter, but as I noted...

Many states are beginning to move toward requiring hydrologic software that "dynamically" models a given network or watershed. For instance, Massachusetts may require such analysis when it releases its new regs for stormwater management late this year. Can HydroCAD respond to this? Any proposed...