37°47′34″N 122°27′19″W / 37.7929°N 122.45534°W / 37.7929; -122.45534
"El Polin Creek Watershed". http://museumca.org/creeks/1670-RescPolin.html ↩
"Tennessee Hollow Watershed". Archived from the original on 2012-10-07. Retrieved 2012-12-05. https://web.archive.org/web/20121007080128/http://www.presidio.gov/explore/Pages/tennessee-hollow-watershed-revitalization.aspx ↩
Kamiya, Gary. "A Walking Tour of San Francisco's Hidden Waters". San Francisco Magazine. Modern Luxury. Retrieved 2014-03-28. https://www.modernluxury.com/san-francisco/story/walking-tour-of-san-franciscos-hidden-waters ↩