NOUS41 KPHI 141901 PNSPHI DEZ001>004-MDZ012-015-019-020-NJZ001-007>010-012>027-PAZ054-055- 060>062-070-071-101>106-150715- Public Information Statement National Weather Service Mount Holly NJ 301 PM EDT Tue Apr 14 2026 To: Subscribers - NOAA Weather Wire Service, Emergency Managers Weather Information Network, and other NWS Partners and Employees From: Ray Kruzdlo - Senior Service Hydrologist Subject: Flood Categories Changing for the Brandywine Creek at Wilmington, Delaware On or about Wednesday, May 13, 2026, the National Weather Service (NWS) will introduce new flood categories for the Brandywine Creek at Wilmington, Delaware (NWS - WMND1, USGS #01481500). Along with the flood categories, impacts listed on the National Water Prediction Service (NWPS) will also be updated. All of the changes have been coordinated with the United States Geological Survey (USGS), the federal agency who owns and operates the gauge, as well as the National Weather Service's Middle-Atlantic River Forecast Center (NWS MARFC) who provides model guidance and forecasts. Due to the removal of Mill Dam and the need to relocate the gauge, flood category and impact changes were required to continue offering NWS flood warning services. OLD FLOOD CATEGORIES NEW FLOOD CATEGORIES Action Stage 14.5 feet 22.0 feet Flood stage: 16.5 feet 24.5 feet Moderate flood stage: 18.0 feet 26.0 feet Major flood stage: 19.0 feet 27.0 feet United States Geological Survey observation data can be viewed online at: https://waterdata.usgs.gov/monitoring-location/USGS-01481500 National Weather Service river forecasts can be viewed online at: https://water.noaa.gov Specific hydrologic information pertaining to Brandywine Creek at Wilmington can be viewed online at: https://water.noaa.gov/gauges/WMND1 If you have questions, please contact: Ray Kruzdlo National Weather Service Senior Service Hydrologist Phone: 609-261-6605 ext 234 Email:raymond.kruzdlo@noaa.gov $$