Updated watershed recitation.
Updated watershed recitation.


Former-commit-id: 6dfecb5ac5d7ed927b47a90b2181b27d78e50d11 [formerly 0eb52200c8f47305103556c62d96b81c12ecf18c]
Former-commit-id: 0d5042170063ea5230ec3cea32c6a1496d7f04cb
justinbois/bebi103_utils