4  Data Sourcing

Published

March 28, 2025

We downloaded all results from the U.S. Water Quality Portal at https://www.waterqualitydata.us/ with the organization ID “Kenai Watershed Forum” on March 5, 2025. Results from this download populate the chapters throughout.

For an example of how data is prepared for submission to the Water Quality Portal, see Appendix A.

Warning: One or more parsing issues, call `problems()` on your data frame for details,
e.g.:
  dat <- vroom(...)
  problems(dat)
Warning: There was 1 warning in `mutate()`.
ℹ In argument: `ResultMeasureValue = as.numeric(ResultMeasureValue)`.
Caused by warning:
! NAs introduced by coercion