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Highlight: During 1973 and 19 74 a water quality study was conducted in San Juan County, southeastern Utah. Water quality data were collected from the study location which had been chained to remove pinyon-juniper vegetation six years earlier. Debris burning and livestock grazing treatments were studied. A n "undisturbed, natural" woodland was left adjacen t to the treatments in order to serve as a control area. Following burning, significant increases in potassium and phosphorus were observed in overland flow from infiltrometer plots. No significant treatment changes were detected for sodium, calcium, or nitrate-nitrogen. No treatment differences due to grazing were detected at the soil surface following cattle use (stocking rate was 2 ha/A UM).

Grazing and Debris Burning on Pinyon-Juniper Sites: Some Chemical Water Quality Implications