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Eugene -Springfield Area Natural Hazards Mitigation Plan <br />2. Hazard Descriptions <br />decrease, occurring as less frequent, but heavier downpours. 61 Shifting peak <br />snowmelt periods will change how and when soil levels have reached saturation. <br />With soil saturation being a significant factor for landslides, we expect to see <br />changes in this hazard, if climate predictions are correct. <br />2.7.3 History of the Hazard in Eugene -Springfield <br />The IMS-60 Study included updating the inventory of historic (<150 years) and <br />prehistoric (>150 years) landslides in the Eugene -Springfield area utilizing LIDAR <br />and records provided by the Cities and Lane County. The inventory identified over <br />700 existing landslides covering about 6% of the 230 square mile study area, more <br />than 3 times the previous number of inventoried landslides. <br />Table 2-8 provides a summary of the landslide inventories for the communities <br />included in the IMS-60 Study. The Special Paper 42 (SP-42) Inventory landslides <br />were identified using LIDAR methods and the Historic Landslide Point Inventory <br />represents landslide records from 1979 to 2016. <br />Table 2-8 Summary of Landslide Inventories for each Community (IMS-60 <br />Table 4-1) <br />Historic• • Point <br />Inventory <br />Lane County" <br />575 <br />38 <br />City of Springfield (East) <br />20 <br />7 <br />City of Springfield (West) <br />2 <br />4 <br />City of Coburg <br />0 <br />0 <br />City of Eugene Neighborhoods <br />Eugene North <br />1 <br />1 <br />Eugene South <br />63 <br />24 <br />Eugene Southwest <br />0 <br />0 <br />Eugene West <br />0 <br />1 <br />City of Eugene Totals <br />64 <br />26 <br />Table 2-8 Source IMS-60 Table 4-1 <br />* Some landslides overlap community boundaries, so totals will not equal total <br />landslides in study area. <br />"Unincorporated Lane County included in study. <br />61 United States. Melillo, Jerry M., Terese Richmond, and G.W. Yohe. U.S. Global Change Research <br />Program. Climate Change Impacts in the United States: The Third National Climate Assessment. <br />2014.487-513. <br />2-47 January 2020 <br />