Knowles Engineering Software

Computer Programs for Civil and Environmental Engineers.

Letter of Approval from St. Johns River Water Management District.


Agency Approval

Phone: 904-725-9513


ExfiltV3 has been reviewed exhaustively by staff of the St. Johns River Water Management District headquartered in Palatka, Florida and found to provide results qualifying it for use in Storm water Permitting in the District.

Considering that the District took over three (3) months to review and approve the program for use, we would find it hard to believe that anyone would encounter any problems in using it to design and permit storm water ponds and exfiltration systems based on calculation of drawdown times for saturated flow conditions. It also means that review of your project applications will proceed much quicker whenever you need to consider saturated flow conditions in your calculations, since the program has been reviewed in advance by District Staff.


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