Note card Surface drain Carinthia

The “indicative maps surface runoff” represent the maximum runoff ratios for an assumed rain with 60 mm precipitation within 30 minutes. The topography is based on laser scan data (flight years between 2006-2015), which for a cell size 2 by 2 meters were gridded. Buildings were automatically removed from it. Bridges, Passages, canals, garden and pedestal walls etc. are not taken into account. Note cards include 4 sub-cards: Hazard Categories, Maximum Specific Drain (l/sm), Maximum Speed (m/s), Maximum Water Depth (m)指示性地表径流图（indicative maps surface runoff）所表征的，是一场30分钟内降水量达60毫米的假想降雨情境下的最大径流比率。该数据集的地形数据基于2006至2015年间获取的激光扫描成果，并已被网格化为2米×2米的像元单元。已自动从该地形数据中移除建筑物要素，且未将桥梁、通道、运河、花园及基座墙体等设施纳入考量范围。本数据集附带的说明卡片包含4个子卡片，分别为：灾害等级（Hazard Categories）、单位比流量（Maximum Specific Drain，l/sm）、最大流速（Maximum Speed，m/s）以及最大水深（Maximum Water Depth，m）。