OCT 2016
CTP Webinar: Identifying and Preserving High-Water Mark Data
Locations: CTP Information Exchange Webinar
Time: Tuesday, Oct 25, 2016, 2:00 PM - Tuesday, Oct 25, 2016, 3:00 PM

High-water marks provide valuable data for understanding recent and historical flood events. The proper collection and recording of high-water mark data from perishable and preserved evidence informs flood assessments, research, and water resource management. The U.S. Geological Survey has recently published a guidance document for "Identifying and preserving high-water mark data". The manual is available at: https://pubs.er.usgs.gov/publication/tm3A24.

The U.S. Geological survey maintains a national database at http://water.usgs.gov/floods/FEV/ that includes high-water mark information for many flood events, and local U.S. Geological Survey Water Science Centers can provide information to interested readers about participation in data collection and flood documentation efforts as a USGS volunteer or observer.


  • Alan Lulloff, ASFPM Science Services
  • Todd Koenig, USGS


  • Introduction
  • USGS Guidance Document – "Identifying and preserving high-water mark data"
  • USGS Flood Event Viewer
  • Questions & Discussion

High-Water Mark CTP Webinar Slides

High-Water Mark CTP Webinar Recording

High-Water Mark Webinar Questions and Answers


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