Problem Descriptions for SEDACCUM.DBF GSWS03, 1965: Large accumulation value due to major debris flow episode. GSWS09 & GSWS10, 1974: Accumulation values are questionable due to the impacts of other research activities upstream of catchment basins. Some bedload material was removed by screening above basin. Activities upstream may have contributed to the movement and deposition of some bedload material. GSWS10, 1975: The watershed was clearcut during the wateryear. GSWS09, 1982: The accumulation value may be inflated due to a large accumulation of leaves in the basin. GSWS09, 1983 – 1987: Original survey data for this period was lost. Accumulation values were estimated by converting calculated dry weight totals for the basins to a wet measured volume of bedload material. The dry weight totals were based on samples taken from the basin which were sorted into organic and inorganic material . These samples were dried then weighed. A unknown multiplier was used to get the dry weight totals. The dry to wet conversion factor was developed by averaging the dry weight per sample of known volume (5 gallon bucket = .019cubic meters) for 5 years of record where the total volume of material removed from the basin, and the total calculated dry weight were known. The average dry weight per sample was then divided into the total dry weight for the years in question. This resulted in a estimated value of the number of samples or buckets removed from the basin. From this a wet volume of the material was calculated (# of buckets x .019 cubic meters). GSWS10, 1983 – 1985 & 1987: Original survey data was lost. Accumulation values were estimated using the same methods described for the same period at GSWS09. GSWS10, 1986: Accumulation value is the measured deposit of a debris flow. GSWS03, 1996: Accumulation value is the measured deposit of a debris flow. GSWS10, 1996: Accumulation value is the measured deposit of a debris flow. GSWS03, 1997 & 1998: Missing data. The catchment basin at WS#3 was not rebuilt until March of 1998, so the period of active bedload movement was missed. Material that was collected could not be measured since it was trapped in the rough surface of the new basin.