This study examined differences in paired peak discharges for 150 to 375 storm events for five pairs of large (60 to 600-ha) basins in the Willamette National Forest, and for small experimental basins (0.1 to 1.0 km2) in the Andrews Forest. For large and small basins, data for instantaneous peak discharges for events exceeding the 1-year return-period flow were collected from original USGS gage records (large basins) or Andrews Forest records (HF004, small basins). These data were combined to create 34-year matched-peakflow event records from two pairs of 60-to-101-ha experimental basins in the Andrews Experimental Forest, and 50-to-55-year records from three pairs of adjacent basins ranging from 60 to 600 km2. Data cover the periods 1933 to 1991 (for large basins) and 1953 to 1991 (for small basins).
Julia A. Jones
To quantify long-term changes in storm hydrograph behavior associated with clear-cutting and road construction, and to examine alternative hydrologic mechanisms to explain hydrograph changes in western Oregon.