Last HWM Event
- Storm of May 2016
- Date: May 06, 2016
- Storm Type: Mid-Latitude Cyclone
- Max WL: 7.37(NAVD 88 Ft.)
- HWMs recorded: 36
View Event Info
Photo credit: National Weather Service
DE High Water Mark Database
High water marks (HWM), typically observed as water stains on buldings, debris lines on the beach, and as storm tides captured from automated sensors, are arguably the best method for capturing the maximum depth and extent of a flood for a large area.
This web site serves as a discovery tool for quickly accessing historically recorded high water marks from significant flooding events within Delaware.
Read MoreHWM DB Summary
| - Mid-Latitude Cyclone | 1806 |
| - Tropical Storm | 82 |
| - Cat 1 Hurricane | 64 |
| - Cat 2 Hurricane | 55 |
| - Tropical Depression | 13 |
Database Info
- Years: 1961 - 2016
- Events: 124
- Records: 2020
- Storm Types: 5
Partners
The Delaware HWM Database project is a collaborative effort between the Delaware Geological Survey (DGS), the Delaware Environmental Observing System (DEOS), and the Delaware Environmental Monitoring & Analysis Center (DEMAC).
This project was funded using Federal funds under awards NA14OAR4170087 from the Delaware Sea Grant Program through the National Sea Grant College Program, National Oceanic and Atmospheric Administration (NOAA), U.S. Department of Commerce.
