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Bay-Delta Office
Department of Water Resources

1416 9th Street,
Sacramento, Ca 95814

Mailing Address:
P. O. Box 942836,
Sacramento, Ca 94236-0001

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 IWFM: Integrated Water Flow Model - Demand Calculator (IDC)

(Web Site Last Updated: September 15, 2017)

IDC is the stand-alone executable version of the root zone component of IWFM. It calculates agricultural and urban water demands at a river-basin scale under user-specified climatic, soil and land-use characteristics. It also routes precipitation and irrigation water through the root zone, and simulates land-surface and root zone flow processes. It can be linked to finite-element as well as finite-difference type integrated hydrologic models.

Current IDC Version

Archived IDC Versions

IDC Version 4.0


IDC is copyrighted by the State of California Department of Water Resources. It is licensed under the GNU General Public License. This means it can be copied, distributed, and modified freely, but you may not restrict others in their ability to copy, distribute, and modify it. See GNU General Public License for more details.

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