17a ‎(2)‎

• Board Meeting Date: 11/17/2007
• Description: CF Section – Bundled Non-Reimbursable Investments - High Resolution Gridded Sublimation Estimates
• Board Meetings - Doc Type: Memo

reliable sublimation calculations at a watershed scale. Another objective is to evaluate the
accuracy of sublimation estimates used in water-supply forecast models. If modeled and
measured sublimation agree well, water-supply forecasters and utilities will have increased
confidence in runoff estimates. Poor agreement would indicate that some level of observational
data is needed to properly account for sublimation in runoff models. Although the study will
focus on only two basins, it will have broad applicability to other basins in Colorado.
Staff Recommendation
Staff recommends the Board request that the General Assembly authorize up to $65,000 from
the Construction Fund to be appropriated to the USGS to develop high-resolution estimates
of sublimation in two watersheds and to explore possible improvements to sublimation
estimates throughout Colorado.
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