River pathway along which we want to calculate salt front location

[amsnyder]

The code that @ted80810 wrote to fetch the COAWST model output pulls in the pathway along which we should calculate salt front location from a csv file of coordinates that was provided to us by @salme146. This pathway is close to the shore, rather than in the middle of the channel or somewhere else. I am creating this discussion to flag this and possibly have more discussion about if this is the best place to calculate salt front location.

[amsnyder]

@galengorski noted that an implicit assumption with modeling the salt front at a daily resolution for a single depth and a single location across the estuary is that within those parameters it is well mixed (or we care less about those differences).

[amsnyder]

If we are doing our own calculations of salt front location using observed specific conductance data, these observations will most likely be coming from along the shore line. So perhaps the shoreline pathway is most appropriate to use for the COAWST model output too so that we maintain consistency.