CRAN check fix and official VAA data release.
Data release with updated NHDPlusV2 network attributes now available at:
Blodgett, D.L., 2022, Updated CONUS river network attributes based on the E2NHDPlusV2 and NWMv2.1 networks: U.S. Geological Survey data release, https://doi.org/10.5066/P9W79I7Q.