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To further assess the water levels, the water level for each record was plotted as a function of well completion depth. Of the 1,187 records with useful water level information, only 1,027 records also contained completion depth information. Figure 2 presents a plot of the water level as a function of well completion depth. Well completion depths ranged from seven to 390 feet bgs. The plot shows a slight downward trend, indicating that deeper water levels are more commonly associated with deeper wells. The comparison of water level to well depth is important because the dry wells within the SCSB are typically installed at shallow depths (about 10 to 15 feet). To accurately estimate the water level at these shallow depths, it is best to use water level information for water wells that are installed at similar depths. Wells that are installed at greater depths may have corresponding water levels that are not representative of shallow conditions (i.e., depths at which dry wells are installed). Therefore, a subset of the 1,187 records was created by selecting records for wells with completion depths of 20 feet or less. This resulted in 286 records. The mean water level for the 286 records was 9.4 feet bgs. Figure 3 is a time -sorted plot of the 286 water level records. Finally, water levels are also a function of climate and are known to fluctuate throughout the year as a function of seasonal rainfall. In the Eugene area, the highest water levels typically occur during the February through May time period. To estimate the highest seasonal groundwater level within the SCSB, a subset of the 286 shallow well records was created by selecting records for the months of February through May. This resulted in 105 records. The mean water level for the 105 records is 8.1 feet. Of these 105 records, 19 of them (or approximately 18 %) had water levels that were 5 feet or shallower. CONCLUSIONS The OWRD well log database was searched to obtain historic water level information for water wells within the SCSB. The information was used to assess whether dry wells within the SCSB have a reasonable likelihood of discharging directly into groundwater or below the highest seasonal groundwater level. The following conclusions are based on the evaluation of the well log database: The mean water level for 1,187 wells with completion depths of seven to 390 feet bgs is 11.6 feet bgs. 2. The mean water level for 286 wells with completion depths of 20 feet or less is 9.4 feet bgs. 3. The mean water level during the wettest part of the year for wells with completion depths of 20 feet or less is 8.1 feet and 18% of these water depths were five feet or less. 4. Dry wells within the SCSB have a reasonable likelihood of discharging directly to groundwater or below the highest seasonal groundwater level. 2