Revision History for Fact Sheet 2015-3019 William J. Carswell, Jr. The 3D Elevation Program--Summary for Pennsylvania ----------------------------------------------------- Posted online March 12, 2015 ----------------------------------------------------- Revised and reposted June 24, 2015, version 1.1 The text version was modified in several places. 1. In figure 1, the map of Pennsylvania was updated from the October 2014 version to the March 2015 version. The wording in the figure caption was revised to reflect this change. 2. In the "3D Elevation Program" section, first paragraph, the sentence "The goal of this high-priority cooperative program is to be operational by January 2015, and to have complete coverage of the United States by the end of 2022, depending on funding and partnerships," has been changed to read as follows: "The goal of this high-priority cooperative program is to have complete coverage of the United States by the end of 2022, depending on funding and partnerships." 3. The table 1 caption, first sentence, originally read as follows: "Data quality levels and related accuracies for the 3D Elevation Program (3DEP) initiative are provided on page 6 in USGS Circular 1399 (http://dx.doi.org/10.3133/cir1399)." This sentence has been changed to read as follows: "Data quality levels and related accuracies for the 3D Elevation Program (3DEP) initiative as provided on page 6 in USGS Circular 1399 (http://dx.doi.org/10.3133/cir1399)." 4. In the body of table 1, middle column, "Nominal pulse spacing (meters)," the number in the third row originally read 2.0. This number has been changed to 1.4. 5. Under the "For Further Information" heading, the line reading "Director" now reads: "Michael A. Tischler, Director." -----------------------------------------------------