OMB 0518-0032-hrsl-2 (Expiration Date: 30/June/2009)
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SPAW / Soil Water Characteristics
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We distribute SPAW and Soil Water Characteristics without cost or obligation, only for scientific and analytic hydrologic purposes with no expressed warranties of accuracy or methodology beyond that normally expected of peer reviewed documentation.   At the users discretion, the installation program will install either or both applications.

Please cite the following publications as the principal model documentations (available on the Download page):

Please complete the following registration so that we can provide you update notices. (This information will not be distributed to others).
All required fields must be completed before submitting.

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For questions or problems please contact Dr. Keith Saxton:


Privacy and Paperwork Reduction Act Statements

Privacy Act Information: This information is provided pursuant to Public Law 93-579 (Privacy Act of 1974) for individuals completing Federal records and forms that solicit personal information. The authority is Title 5 of the U.S. Code, sections 1302, 3301, 3304, and 7201.
Purpose and Routine Uses: The information from this form is used solely to notify you regarding modifications/updates to the SPAW model. No other uses will be made of this information.
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