20250216 12182300 1.0 TRUE <div style='text-align:Left;'><div><div><p><span>This dataset contains impervious landbase features updated using digital orthoimagery acquired in 2015 by the Delaware Valley Regional Regional Planning Commission (DVRPC) and its partners. This is an update of existing features originally captured in 2013 using 2010 orthoimagery. Additionally, estimated building heights were derived from high resolution normalized digital surface elevation data models generated from NIR LiDAR data using the highest hit method. Digital surface elevation models were </span><span>derived from LiDAR data collected by Quantum Spatial and other vendors and compiled for delivery to USGS and its partners. The horizontal datum for this dataset is North American Datum, 1983, Geoid GRS 1980, and the data is projected in Lambert Conformal Conic StatePlane Pennsylvania South (FIPS 3702). Units are US Foot. The minimum size for building features is 200 square feet.</span></p><p><span><span>Please note that since this data is an update to data originally created using 2010 aerial imagery, many of the features may not appear to be positionally accurate when used with newer imagery.</span></span></p><p><span>Heights provided for 'Building' class impervious surface features are estimates of 90th and 50th percentile statistical distribution and should be considered approximate.</span></p><p><span /></p><p style='margin:0 0 0 0;'><span>Process Steps for Calculating Building Height Statistics:</span></p><p><p style='text-indent:20;margin:0 0 0 20;'><span><span>Normalized digital surface models (nDSM) and slope rasters were generated from 0.5-meter LiDAR data.</span></span></p><p><p style='text-indent:20;margin:0 0 0 20;'><span><span>Geodesic area was calculated (in square feet) for all features classified as ‘Building’.</span></span></p><p><p style='margin:0 0 0 40;'><span>A negative 1 meter buffer was applied to all building features with an area greater than 200 square meters - applied in an effort to ensure nDSM input values were those corresponding to the building roof and not the adjacent ground.</span></p><p><p style='margin:0 0 0 40;'><span><span>Zonal statistics (Spatial Analyst extension) were calculated on the buffered features for each nDSM raster (first multiplying each raster by 10 to maintain precision and then converting from floating point to integer raster) and slope raster (generated from each integerized nDSM raster). Zonal percentile statistics were also calculated on buffered features for each raster to obtain the 90th percentile building heights (HEIGHT_ESTIMATE field).</span></span></p><p><p style='text-indent:20;margin:0 0 0 20;'><span><span>All output statistics fields were joined to the original input feature class (with unit conversions applied, where necessary).</span></span></p><p><p style='margin:0 0 0 0;'><span>A complete dataset, which includes the following fields that are populated with various statistical outputs generated during the building height estimation process, is available upon request:</span></p><p style='margin:0 0 0 0;'><span>HEIGHT_PCT90 – 90th percentile value of all cells in the nDSM raster located within the building footprint.</span></p><p style='margin:0 0 0 0;'><span>HEIGHT_PCT50 – median value of all cells in the nDSM raster located within the building footprint.</span></p><p style='margin:0 0 0 0;'><span>HEIGHT_COUNT – total number of cells with tabulated values in the nDSM raster located within the building footprint.</span></p><p style='margin:0 0 0 0;'><span>SLOPE_MEAN – average of all cells in the slope raster located within the building footprint.</span></p><p style='margin:0 0 0 0;'><span>SLOPE_STD – standard deviation of all cells in the slope raster located within the building footprint.</span></p><p style='margin:0 0 0 0;'><span>SLOPE_COUNT - total number of cells with tabulated values in the slope raster located within the building footprint.</span></p></div></div></div></p></p></p></p></p></p> DVRPC Pennsylvania Bucks County Impervious Surface Structures Building Footprints Building Heights Buildings Roads Driveways Parking Lots Sidewalks Provide digitized impervious surface features using digital orthoimagery acquired in 2015 by the Delaware Valley Regional Regional Planning Commission (DVRPC) and its partners. Delaware Valley Regional Planning Commission (DVRPC) <div style='text-align:Left;'><div><div><p><span>https://catalog.dvrpc.org/dvrpc_data_license.htm</span></p></div></div></div> 2015 Impervious Surface - Bucks County, PA iVBORw0KGgoAAAANSUhEUgAAASwAAADICAYAAABS39xVAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAB 2AAAAdgB+lymcgAACdBJREFUeJzt3etuG8cZh/H/npcHkZaUOi380beR+7+NNmmBRnElS+Jxuafi HXJVWlGNfIr2JZ4fQETQgbLs6MHMcHY27fu+FwA4kL73HwAA/iiCBcANggXADYIFwA2CBcANggXA DYIFwA2CBcANggXADYIFwA2CBcANggXADYIFwA2CBcANggXADYIFwA2CBcANggXADYIFwA2CBcAN ggXADYIFwA2CBcANggXADYIFwA2CBcANggXADYIFwA2CBcANggXADYIFwA2CBcANggXADYIFwA2C BcANggXADYIFwA2CBcANggXADYIFwA2CBcANggXADYIFwA2CBcANggXADYIFwA2CBcANggXADYIF wA2CBcANggXADYIFwA2CBcANggXADYIFwA2CBcANggXADYIFwA2CBcANggXADYIFwA2CBcANggXA DYIFwA2CBcANggXADYIFwA2CBcANggXADYIFwA2CBcANggXADYIFwA2CBcANggXADYIFwA2CBcAN ggXADYIFwA2CBcANggXADYIFwA2CBcANggXADYIFwA2CBcANggXADYIFwA2CBcANggXADYIFwA2C BcANggXADYIFwA2CBcANggXADYIFwA2CBcANggXADYIFwA2CBcANggXADYIFwA2CBcANggXADYIF wA2CBcANggXADYIFwA2CBcANggXADYIFwA2CBcANggXADYIFwA2CBcANggXADYIFwA2CBcANggXA DYIFwA2CBcANggXADYIFwA2CBcANggXADYIFwA2CBcANggXADYIFwA2CBcANggXADYIFwA2CBcAN ggXADYIFwA2CBcANggXADYIFwA2CBcANggXADYIFwA2CBcANggXADYIFwA2CBcANggXADYIFwA2C BcANggXADYIFwA2CBcANggXADYIFwA2CBcANggXADYIFfEff99/9+4miiL+/PxHBAuAGwQLgBsGC n6lZ14f/xjYNC1OxSIq7737doW+VKFIcxfbZ2u12mkwmx49VlfJ8ouenJy0+LMP7dtVeZVGq6Y/P m0Xxn/DT4Y8iWHAhrBXFkSILV4hXJ4WGdWrbVl3XKY5jZVkWYta1rZqmUZ4XaqpKdSRtNpvwPEOw BvZ5zaEOz5+cAmWBw/gQLLhiI6yuaVTXtbqm1XQ+VVu3ag4HJUmitI8UJYn6ugmhyrtYzWanpmt1 f3encjbVfDLVttrr6upK66cnfbm70/39fYjdZDbVzQ+3L98rSbP3/pFxhmDBFRtJWaz2+30YFU2v 5oq6Xu2h1qHdq95XStPj/9Z912n3/KBDU6uzEdbzKoyw1uu1ntYrTafT8HwWuv1uF75mmWbKktQG bxghggVXLC6djaTSVJFVpWlCdGxaaBGzUZF9rCiKMGKyaaKxyJVZrvlspjRO1NWNHh8fNc0mmk2m OhwOytNUZVmGqSa7FcaJYGHUhrWpF1GkrCyV5bnUdrJqxVmqrCzCKMrCZZ8fpUl4FB8mSmwN6/FR P/z4Ude3N1Ka6Ka91ma3VVLrJX42+rLvZKMte1+nXrl9H4wGwcKofROrbz8g2cJ43ClNY5VZomxa hmDZInpVVVqvd1o1fZj6NbF0vVxou9uFxfePHz+qb1qlaaYPs1kIo61pFdOp+qZRdJpWYlz4V4G/ bQ32jmFbg33M3rJXCJNESdfpUNd6en4OU777u9/0+fPnEL5Z2+jvP/9DX369008//RSmf3XdKioK TYvyOB3EqBEs+NnWkESnRH3zkdAuC5KNkg6HRpvNTqvVJjwWN9daP6+U1p2eNrXmbazuaqnnzVp/ +fQ3lW2stjkoXc5U50l4rihLFPdd2OIVJWxvGBOCBddsMd1YsGxB3qZ/9ri+vg6L8FHU67Deanv/ qKvFQrPZTHXfKVvMtN1uNVGmfV2pjaQs7OOybaa2H8sq+N4/HV4jWHAtLI7bJtJXhnBJnZpionZX hUX4dFIqzTMpS7R6+qoo6cN616FrNYmOzzdsHm27NkQQ40Gw4H6qGLY6nLY2DKcnhA2mXac0iZQW hWZXcx2qgx4evyorck0XV+FzbetDVR/U17X6upWaVlF2nF4Oe7QwHgQLF8HiMzwGFpt6tw3bIBbL ZXh10KaBh+1WylM11UHJfBlGVKldbxh+IaKwih+2Rvy/VyjxbggWXLOR1OtQnRt2vYc9WdOJlMQh WnYR9NevX5WmuXabbdjikNmG0kmrhC0No0Ww4NrrUNk07vzQvSQ+Tulsk6h9bh8pXFfYNV24tOfh 4SFck5gnqew8h7jtw4bUPonCQnwYcWE0CBYuYoQ1vG3CdG4ImS3Id52qpg4ftwV2u/DZ9l0tl0ut 91U4QqbMC00nE0W2F8v2pNr2hvf8wfAmgoWLGWG9NTXcdQeVaa6b21t9tdFUVavsY3XbKlw/WFzN QrhsmvjLw2/6VKQqLFq2+G6xs1cUMRoECxdteJVvmCqGI2jSTEkca9JO9K/HBy0WC31YLEPAwquL dj2ijdTsbC2MCsHCRcsi2wh6etvWs4pCRZqpyPMwGrtbPYdXCe2yHLvQeQhcb6O1d/2T4y0ECxct enXqg71qaKc72JYFG019+vGvSqNY9W4fNpSev0LYNo2SjF+RMeFfA5fPFua74zlZYY2rl3aHKpzq sJwutNqsVTVNOI00HLF8GmW1fSe2jY4LwcJlCy8cRmE9qrAYnY5Ytn1YXdNrvVppu9mE87Vs8ljt 9oqyVHlRcBbWCBEsXLa6+d/WB5ve2SF9Ni08bX2wI5XtYTemsLOwuq5VE44cfe8/ON5CsHDRnp+f X64JLCZlmPLZVHBfH8JjkeVa9+vTXXkSxWmi/BQrO+2BM7LGhWDBvWHD6Mvrei873SPleanVaqXJ ZKYvd/8J61jz+Vy//vPfur291S+rey1vl8pvFi+/DcNF1MRqfAgW3AuX3JwiZXfKsVt+hVGVbVeY TlS3TTihIS+PN6awkdZ8cRUecZkfp4NF8bvnxPgQLFyU4VgZO9ivtTFXclyrGkZNNsKyhx3kZ+dl lfPZNzvk7Wu/dzE13hfBgntDZIwtpr88FGlXVWpsD5YFy3a5211wkkSlHe6XJHaz5xA5W9c6P18L 40SwcNFsCjjsYLeRlW1XMOfrU8OJpcRq/AgW3LPR1LCGNZwUeoxQpLLIX24Vdr5r3e45GIXH2yMq e75whx4O8RsVgoWLEm6GGm4mkb2czW5synd+nLLFyNa1hgP+3ooVxodgwb3zuIT7E7684hep7dvw 1nBHaAvWcJb7+fuHVxrPR1YsvI8PwYJ7vwvL+bnup6sBz7ctvD73/fz9RGrcCBYANwgWADcIFgA3 CBYANwgWADcIFgA3CBYAefFfdGQFgh6tS7EAAAAASUVORK5CYII=