Version History for U.S. Geological Survey Circular 1519

The 3D National Topography Model Call for Action--Part 1. The 3D Hydrography Program

By Rebecca Anderson, Vicki Lukas, and Stephen S. Aichele
-----------------------------------------------------
First posted online June 6, 2024

-----------------------------------------------------
Revised and reposted July 1, 2024 as version 1.1

On page 3, the caption of figure 1 was expanded to include the following phrase:
 by the Washington State Hydrography Dataset Program

The expanded caption reads as follows:

Figure 1. Maps showing the improved alignment possible in the 3D Hydrography Program by using hydrography data derived from high-quality elevation data from the 3D Elevation Program (3DEP). The example maps show topography and streams near the border between Skagit and Snohomish Counties in Washington. The map on the left is from U.S. Geological Survey NHD data derived from the 1989 1:24,000-scale topographic map. The map on the right shows more details of streams and a better alignment of streams with topography that result from using hydrography derived from 3DEP data by the Washington State Hydrography Dataset Program in 2023. NHD, National Hydrography Dataset.


On page 7 in figure 4, dollar signs were removed from entries in row 3. The corrected row has the following information:
Number of stream features, about 26 million, about 200-300 million, about 220-330 million