Milwaukee County Depression Polygons

Polygons representing surface depressions in Milwaukee County deeper than 1 inch and larger than 0.10 acres. Produced from a hydro-enforced DEM developed by MMSD in 2021, a derivative of LiDAR data commissioned by SEWRPC and collected April 2-3. 2020. See additional Feature Classes within the Topographic dataset: Milwaukee County Spot Elevations Milwaukee County Depression Elevation Points Milwaukee County Depression Polygons Milwaukee County Contour Lines本数据集包含密尔沃基县（Milwaukee County）内深度大于1英寸、面积大于0.10英亩的地表凹陷多边形要素。该数据集由MMSD于2021年开发的水文增强型数字高程模型（hydro-enforced DEM）生成，此模型衍生自SEWRPC委托、于2020年4月2日至3日采集的激光雷达（LiDAR）数据。地形数据集内还包含以下其他要素类（Feature Classes）：密尔沃基县定点高程、密尔沃基县凹陷高程点、密尔沃基县凹陷多边形、密尔沃基县等高线。