Data issue with San Marcos river

[ghaarsma]

First of all, a fantastic project.

Not sure if this is the right place to report "data" issues, but when selecting San Marcos, TX, it incorrectly reports the San Marcos River (47 km) flowing into Brushy Creek (78 km).

Brushy Creek is a tributary of the San Marcos, joining the San Marcos river just upstream of Stairtown, TX, as you can see on this Topo Map