Update waterdynamics.py #101

Job	Run time
pylint_check	22s
pypi_check	20s
main-tests (macOS-latest, 3.10, latest)	4m 21s
main-tests (macOS-latest, 3.10, develop)	6m 43s
main-tests (macOS-latest, 3.11, latest)	4m 28s
main-tests (macOS-latest, 3.11, develop)	6m 14s
main-tests (macOS-latest, 3.12, develop)	8m 11s
main-tests (ubuntu-latest, 3.10, latest)	1m 22s
main-tests (ubuntu-latest, 3.10, develop)	2m 56s
main-tests (ubuntu-latest, 3.11, latest)	1m 27s
main-tests (ubuntu-latest, 3.11, develop)	3m 12s
main-tests (ubuntu-latest, 3.12, develop)	3m 5s
main-tests (windows-latest, 3.10, latest)	4m 55s
main-tests (windows-latest, 3.10, develop)	7m 22s
main-tests (windows-latest, 3.11, latest)	6m 59s
main-tests (windows-latest, 3.11, develop)	7m 2s
main-tests (windows-latest, 3.12, develop)	7m 21s
	1h 16m 20s

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