Convert DRB HUC-12 analysis to Notebook

[SRGDamia1]

@aufdenkampe, should I convert the work I did to run each HUC-12 in the DRB from a python script into a Jupyter notebook?

[aufdenkampe]

@SRGDamia1, yes please! That would be very helpful to have that additional documentation of your code, especially as I loop in @caitlinlulay into this project but also to help sjordan29 understand how you are using your ModelMW-Python-Client.