Laserfiche WebLink
1 <br />1 <br />I <br />early models were most sensitive to clear cutting and a minimal or zero <br />increase in water yield was assumed to occur under partial cutting unless <br />more than 50 percent of the over story vegetation was removed, (Troendle <br />and Leaf 1980). The Deadhorse Creek Watershed experiments were <br />implemented to test both the hypothesis and the initial hydrologic models. <br />Deadhorse Creek, gauged since 1955, is a 667 acre watershed (figure 4) on <br />the Fraser Experimental Forest. Two separately gauged sub drainages within <br />Deadhorse Creek are the 100 acre North Fork and the 193 acre Upper <br />(south) Basins. Weirs on the North Fork and Upper Basin were built in <br />1970 and 1975, respectively. The Deadhorse Main watershed and two sub <br />drainages are calibrated against the 1984 acre control watershed, East St. <br />Louis Creek. Unit 8, on Deadhorse Creek (figure 4) is an un- gauged North <br />Slope, 100 acres in area, which lies downstream of both the North Fork and <br />the Upper Basin sub drainages. Unit 8, or the North Slope, represents a <br />portion of the 368 acre interbasin area lying below the two gauged sub <br />drainages and above the main streamgage. <br />DEADHORSE WATERSHED <br />Shelterwood out IM <br />Proposed selection cut 0 <br />Clearcuts (0 Via- <br />Unit boundary oe ' <br />Stream - gages' <br />Roads <br />Units OOy9pL`� <br />Upper Basin(3.4 6) <br />t/2 mile <br />North Fork <br />h Slope <br />f <br />Figure 4: Schematic drawing of the Deadhorse Creek watershed showing harvesting <br />practices and streamgage locations. <br />h <br />