Downloads

Get MGSFlood

MGSFlood is sold as either an annual license or free evaluation license. The annual license includes on-going technical support, free program upgrades, and training at a reduced price. The evaluation license is free and valid for 1-month to allow for trial runs of the software. MGSFlood can be downloaded from this site. However a license key is required. Please contact us for an evaluation or annual license.

Download trial version of MGSFlood

  1. Click the download link and save the zip file to a temporary folder on your computer.
  2. Unzip the file.
  3. Double click setup.exe to run the setup routine.
  4. You may delete the installation files after running the installation.

MGSFlood Download

Version 4.70 Released: October 3, 2025 Release notes
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MGSFlood Annual License

New license: $1,500 initially, $650 Annual Fee.

Bulk discounts available for purchases of more than two licenses. The purchase price includes the annual license for the first year. The license fee is $650 and is renewed each year on the date of purchase. Price includes sales tax.

Please contact to request an annual license: MGSFlood@rti.org

ArcGIS maps

Extended TS Map Station Map

Climate Region GIS Maps

Maps of the precipitation climate regions in Western Washington.

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Spreadsheet tools

The tools below are offered without warrantee. While all attempts have been made to ensure they are error free, the user is solely responsible for their use and ensuring that results are reasonable.

SlottoSlottoCircular

Spreadsheet for determining an equivalent system of circular orifices that mimics the behavior of the vertical slot orifice returned by the MGSFlood optimize.

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PondHydraulics

Spreadsheet for developing rating table for pond/vault. Resulting table may be copied to MGSFlood for analysis.

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PondPipe

Spreadsheet computes an elevation/volume rating for a horizontal pipe. The required storage volume at the overflow riser crest is obtained from MGSFlood for a prismatic pond. The spreadsheet can be used to size a horizontal pipe vault to obtained the required storage volume.

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