@misc{indiciae3fdce0506484,
  title = {Upstream dam passage and use of an eel ladder by the common watersnake (Nerodia sipedon)},
  author = {Stuart A. Welsh and Zachary J. Loughman},
  year = {2015},
  url = {https://pubs.usgs.gov/publication/70193849},
  note = {Source identifier: 70193849}
}