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Pacific Southwest Research Station
800 Buchanan Street
West Annex Building
Albany, CA 94710-0011

(510) 559-6300

San Dimas Experimental Forest

SDEF Home Page | Williams Fire | Fire Severity | Fire Emissions | Water Quality | Water Yield | Ecology | Lysimeters | Resources & Maps | Photos | Management Plan | Site description, Facilities, and Use | The Future of San Dimas

Water Quality (under construction)

[Photo]: SDEF vegetation view

Emissions of nitrogen oxides in the South Coast Air Basin of southern California are among the most extreme in the nation. Resulting atmospheric nitrogen deposition to vegetation at San Dimas, as measured by canopy throughfall of nitrate and ammonium, has been at record levels nationally and is apparently a primary source of nitrate pollution in stream water there.

Volfe Canyon gaging station, USFS photo

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Last Modified: October 14, 2004