In the cedar-hemlock-grand fir ecosystem clearcutting of units of varying size (2.6 to 44 ha) and subsequent disposal of slash by prescribed burning resulted in on-site stream water quality changes. But off-site changes were of less intensity. Two of three clearcut units responded in this manner; a third unit gave different results. The physical and chemical components discussed represent the mean concentration per unit volume of discharge (or precipitation input) over a timespan of 21 months following land treatment.
Snyder, Gordon G.; Haupt, Harold F.; Belt, George H., Jr. 1975. Clearcutting and burning slash alter quality of stream water in northern Idaho. Res. Pap. INT-RP-168. Ogden, UT: U.S. Department of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station. 34 p.