Role of Fire in Determining Annual Water Yield in Mountain Watersheds
Role of Fire in Determining Annual Water Yield in Mountain Watersheds
This chapter elaborates the role of fire in determining annual water yield in mountain watersheds. The chapter also presents the computational procedures for estimating average annual water yields based on annual precipitation and vegetation cover types. This procedure allows for an estimation of water yields under current conditions, under various levels of vegetation management, or under historic water yield based on fire history. Historic water yield information is needed to determine the natural range of water yield variability so that hydrologic response can be correctly determined. The chapter also presents two examples of evaluating fire's role in determining annual water yield in mountain watersheds. Annual water yield was estimated using developed procedures for the Tenderfoot Creek Experimental Forest in central Montana for the past 400 years based on fire history records.
Keywords: annual water yield, mountain watershed, vegetation cover, fire history, vegetation management
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