Delaware • New Jersey • Pennsylvania
New York • United States of America
All listed locations are on the main stem Delaware River or Delaware Bay. All data from the National Weather Service (NWS).
| FORECAST | = Current and NWS-Forecasted River Levels at Flood Forecast Locations; Near Real-Time Data - REFRESH OFTEN |
| CRESTS | = Historic Observed Flood Crest Data from the NWS. Sometimes referred to as the "peak." |
| MAP | = NWS Flood Inundation Maps Depicting Extent of Flood Waters; only Available for Nine (9) Locations |
| IMPACTS | = NWS-Defined Flood Impacts at Certain Water Levels |
What Am I Looking At?
| LOCATION | CURRENT/FORECASTED RIVER LEVELS |
HISTORIC CRESTS | EXTENT OF FLOOD WATERS |
FLOOD IMPACTS BY WATER LEVEL |
| CALLICOON, NY | FORECAST | CRESTS | IMPACTS | |
| BARRYVILLE, NY | FORECAST | CRESTS | IMPACTS | |
| MATAMORAS, PA/ PORT JERVIS, NY |
FORECAST | CRESTS | MAP | IMPACTS |
| MONTAGUE, NJ | FORECAST | CRESTS | MAP | IMPACTS |
| TOCKS ISLAND | FORECAST | CRESTS | IMPACTS | |
| BELVIDERE, NJ | FORECAST | CRESTS | MAP | IMPACTS |
| EASTON, PA | FORECAST | CRESTS | MAP | IMPACTS |
| RIEGELSVILLE, NJ | FORECAST | CRESTS | MAP | IMPACTS |
| FRENCHTOWN, NJ | FORECAST | CRESTS | MAP | IMPACTS |
| STOCKTON, NJ | FORECAST | CRESTS | MAP | IMPACTS |
| NEW HOPE, PA/ LAMBERTVILLE, NJ |
FORECAST | CRESTS | MAP | IMPACTS |
| WASHINGTON CROSSING, PA |
FORECAST | CRESTS | IMPACTS | |
| TRENTON, NJ | FORECAST | CRESTS | MAP | IMPACTS |
| NEWBOLD ISLAND | FORECAST | CRESTS | IMPACTS | |
| BURLINGTON, NJ | FORECAST | CRESTS | IMPACTS | |
| BRIDESBURG, PA | FORECAST |  |
IMPACTS | |
| WASHINGTON ST, PHILADELPHIA, PA | FORECAST | CRESTS | IMPACTS | |
| MARCUS HOOK, PA | FORECAST | CRESTS | IMPACTS | |
| DELAWARE CITY, DE | FORECAST | CRESTS | IMPACTS | |
| DELAWARE BAY AT REEDY POINT, DE | FORECAST | CRESTS | IMPACTS | |
| DELAWARE BAY AT LEWES, DE | FORECAST | CRESTS | IMPACTS | |
| DELAWARE BAY AT CAPE MAY, NJ | FORECAST | CRESTS | IMPACTS |
- NWS AHPS Interactive Map for the Upper Basin (Includes forecast points for locations on several tributaries as well as the main stem Delaware River)
- NWS AHPS Interactive Map for the Lower Basin (Includes forecast points for locations on several tributaries as well as the main stem Delaware River)
What Am I Looking At?
The National Weather Service (NWS) has a variety of flood forecast and warning tools that can provide you with critical advance notice of floods. These tools include maps and graphs that can help you know when rivers near you are going to flood, and to what extent.
Current and Forecasted River Levels:
The "hydrograph," is a chart that shows you current river levels. If a flood is predicted in your area, the hydrograph will also show you predicted flood levels and timing. It is a good idea to bookmark this page and check it regularly during times when the river level is rising or expected to flood. Hydrographs are created by the NWS.
See NWS Brochure; NWS User Guide; NWS Explanation; NWS Accuracy
Historic Crests:
Displays historic record levels of flooding for that location. Data compiled by the NWS.
Extent of Flood Waters:
Mapping from the NWS that displays the extent of flooding by "stage," or river level. First determine forecasted or historic stage of interest, then mouse over the stage to view range of possible floodwater inundation.
See NWS User Guide.
Flood Impacts by Water Level:
Specific impacts, such as street closures and other inundation impacts, as reported by emergency managers and verified by the NWS.