Revision History for Fact Sheet 2014-3079

William J. Carswell, Jr.

The 3D Elevation Program--Summary for Hawaii

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Posted online September 12, 2014

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Revised and reposted February 16, 2016, version 1.1

1. On page 1, in figure 1, the map of Hawaii has been updated from the June 2014 version to the fall 2015 version.  The wording in the 
figure caption, second sentence, has been revised to reflect this change. Additionally, the first sentence in the caption, which formerly 
read “Map of Hawaii showing the extent of existing and planned publicly available lidar data,” has been changed to read as follows: “Map of 
Hawaii showing existing and planned-with-funding publicly available lidar data.”

2.  On page 1, in the Introduction, second paragraph, the second sentence formerly read “The evaluation demonstrated that lidar acquisition at 
quality level 2 (table 1) for the conterminous United States and quality level 5 interferometric synthetic aperture radar (ifsar) data (table 1) 
for Alaska with a 6- to 10-year acquisition cycle provided the highest benefit/cost ratios.” This sentence has been changed to read as follows: 
“The evaluation demonstrated that lidar acquisition at quality level 2 (table 1) for the conterminous United States, Hawaii, and selected 
U.S. territories, and quality level 5 interferometric synthetic aperture radar (ifSAR) data (table 1) for Alaska, all with a 6- to 10-year 
acquisition cycle, provided the highest benefit/cost ratios.”

3.  On page 1, in the text under the heading “3D Elevation Program Benefits for Hawaii,” first paragraph, the sentence reading “The cost for 
such a program in Hawaii is approxi¬mately $2.2 million, resulting in a payback period of 0.7 years and a benefit/cost ratio of 10.9 to 1 over 
an 8-year period” has been changed to read as follows: “The cost for such a program in Hawaii is approxi¬mately $4.3 million, resulting in a 
payback period of 1.5 years and a benefit/cost ratio of 5.5 to 1 over an 8-year period.”

4.  On page 1, in the unnumbered table entitled “3DEP in Hawaii by the Numbers,” the figures $2.16 million, 0.7 years, and $1.37 million, have 
been changed to $4.3 million, 1.5 years, and $2.7 million, respectively.

5.  On page 1, 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 2023, depending on funding and partnerships."

6.  On page 1, in the “Benefits of a Funded National Program” section, in the second, third, and fourth bulleted items, immediately after the 
word “State” the following text has been added: “, Tribal, U.S. territorial,”.

7.  On page 2, in the table 1 caption, the sentence reading "Data quality levels and related accuracies for the 3D Elevation Program (3DEP) 
initiative” 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)." 

8.  On page 2, in the body of table 1, middle column, under the heading "Nominal pulse spacing (meters)," the number in the third row originally 
read 2.0.  This number has been changed to 1.4.

9.  On page 2, in the section entitled “Next Steps for Implementing 3DEP,” the first bulleted item reading “Increased partnerships among Federal, 
State, Tribal, and local governments” has been changed to read as follows: “Increased partnerships among Federal, State, Tribal, U.S. territorial, 
and local governments.”

10. On page 2, under the "For Further Information" heading, the line reading "Director" now reads: "Michael A. Tischler, Director." In addition, 
the line under Drew Decker’s name reading “USGS Geospatial Liaison” has been changed to read “The National Map Liaison.” 

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