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Assessment of Watershed Vulnerability to Climate Change Umatilla National Forest March, 2012 Prepared by: Caty Clifton, Forest Hydrologist Kate Day, Hydrologist Allison Johnson, Fishery Biologist Umatilla National Forest Pendleton, Oregon and Ukiah, Oregon 210 Assessing the Vulnerability of Watersheds to Climate Change
Umatilla National Forest Watershed Vulnerability Assessment, Pacific Northwest Region (R6) BACKGROUND AND FOREST CONTEXT National Forests across the country are evaluating the risk posed by climate change to important water resources on the forests and adjoining lands. These evaluations are focused on climate-induced hydrologic change, impacts on water diversions and aquatic species, and interactions with infrastructure. These Watershed Vulnerability Assessments (WVAs) provide real world examples of issue-based and landscape-specific approaches to assessing the vulnerability of national forest watersheds and resources to climatic changes, and planning and implementing effective adaptation. The general intent is to display, for managers, the relative vulnerability of watersheds to climate change, and identify watersheds containing water “values,” or systems that may be susceptible to changes in hydrologic conditions (Hurd et al. 1999; Furniss et al. 2010). On the Umatilla National Forest (UNF), vulnerability was considered at the following two landscape and issue scales. 1. Forestwide at the HU12 scale (162 subwatersheds have UNF ownership from
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AUTHORS AND CONTRIBUTORS Authors* M
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ASSESSSING THE VULNERABILITY OF WAT
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staff; the task group included repr
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Figure 2. Conceptual model for asse
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Figure 3. Density of springs and sm
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Using Historic Data One finding con
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NF (Region 8) relied on information
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level of uncertainty. Though there
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climate (Casola et al. 2005). Only
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sensitivity. Most were derived from
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The sensitivity evaluation typicall
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in exposure. The result of combinin
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highest priority for management act
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to information affected the assessm
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with and rely on in many resource d
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Pilot National Forest Reports Conte
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Assessment of Watershed Vulnerabili
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Gallatin National Forest Watershed
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Helena National Forest Watershed Vu
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Grand Mesa, Uncompahgre and Gunniso
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White River National Forest Watersh
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Coconino National Forest Watershed
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Page 164 and 165: Sawtooth National Forest Watershed
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Chequamegon-‐Nicolet National F
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Chugach National Forest Watershed V
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