Live readings · updated daily
Water temperature in Delaware
The latest readings from USGS real-time water sensors across Delaware, warmest first. Snapshot updated October 19, 2026.
Warmest sensor reading right now
USGS gauge Delaware River at Reedy Island Jetty, DE · as of 19 hrs ago
All reporting stations
| Station | Water temp | Streamflow | Gage height | Observed |
|---|---|---|---|---|
| Delaware River at Reedy Island Jetty, DEUSGS gauge | 65°F18°C | — | — | 19 hrs ago |
| C AND D CANAL NR DELAWARE CITY, DEUSGS gauge | 64°F18°C | 12,500 ft³/s | 2.48 ft | 19 hrs ago |
| DELAWARE RIVER AT DEL MEM BRIDGE AT WILMINGTON DEUSGS gauge | 64°F18°C | — | — | 19 hrs ago |
| CHRISTINA RIVER AT WILMINGTON, DEUSGS gauge | 63°F17°C | — | — | 19 hrs ago |
| APPOQUINIMINK RIVER NEAR ODESSA, DEUSGS gauge | 62°F16°C | — | — | 19 hrs ago |
| MURDERKILL RIVER AT FREDERICA, DEUSGS gauge | 61°F16°C | — | 1.72 ft | 19 hrs ago |
| ST JONES RIVER AT DOVER, DEUSGS gauge | 61°F16°C | 11 ft³/s | 2.69 ft | 19 hrs ago |
| MILLSBORO POND OUTLET AT MILLSBORO, DEUSGS gauge | 60°F16°C | 33 ft³/s | 2.95 ft | 19 hrs ago |
| BROADKILL RIVER NEAR MILTON, DEUSGS gauge | 60°F16°C | — | — | 19 hrs ago |
| CHRISTINA RIVER AT NEWPORT, DEUSGS gauge | 60°F16°C | — | — | 19 hrs ago |
| MASSEY DITCH AT MASSEY LANDING, DEUSGS gauge | 58°F15°C | — | — | 19 hrs ago |
| BRANDYWINE CREEK AT WILMINGTON, DEUSGS gauge | 54°F12°C | 268 ft³/s | 18.70 ft | 19 hrs ago |
| CHRISTINA RIVER AT COOCHS BRIDGE, DEUSGS gauge | 54°F12°C | 13 ft³/s | 4.14 ft | 19 hrs ago |
| SILVER LAKE TRIBUTARY AT MIDDLETOWN, DEUSGS gauge | 53°F12°C | 2 ft³/s | 0.47 ft | 19 hrs ago |
| WHITE CLAY CREEK AT STANTON, DEUSGS gauge | 53°F11°C | — | 3.24 ft | 19 hrs ago |
| BEAVERDAM BRANCH AT HOUSTON, DEUSGS gauge | 52°F11°C | 2 ft³/s | 2.60 ft | 19 hrs ago |
| BUCKS BRANCH DS OF CONRAIL RD AT CANNON, DEUSGS gauge | 52°F11°C | — | 25.23 ft | 20 hrs ago |
| WHITE CLAY CREEK AT NEWARK, DEUSGS gauge | 52°F11°C | 42 ft³/s | 5.41 ft | 19 hrs ago |
| WHITE CLAY CREEK NEAR NEWARK, DEUSGS gauge | 52°F11°C | 52 ft³/s | 5.15 ft | 19 hrs ago |
| RED CLAY CREEK AT WOODDALE, DEUSGS gauge | 51°F11°C | 36 ft³/s | 2.93 ft | 19 hrs ago |
| PIKE CREEK NEAR NEWARK, DEUSGS gauge | 51°F10°C | 4 ft³/s | 0.75 ft | 19 hrs ago |
| East Poplar River at international boundaryUSGS gauge | 42°F6°C | 3 ft³/s | 5.29 ft | 19 hrs ago |
| ARMY CREEK AT NEW CASTLE, DEUSGS gauge | — | — | -1.53 ft | 19 hrs ago |
| ASSAWOMAN CANAL AT CENTRAL AVE AT OCEAN VIEW, DEUSGS gauge | — | — | 1.01 ft | 19 hrs ago |
| Assawoman Canal at Rt 26 at Ocean View, DEUSGS gauge | — | — | 0.85 ft | 19 hrs ago |
| BEAVERDAM DITCH NEAR MILLVILLE, DEUSGS gauge | — | 1 ft³/s | -0.06 ft | 19 hrs ago |
| BLACKBIRD CREEK AT BLACKBIRD, DEUSGS gauge | — | 1 ft³/s | 1.06 ft | 19 hrs ago |
| CALF RUN AT MARSHALLTON, DEUSGS gauge | — | 0 ft³/s | 16.15 ft | 19 hrs ago |
| DELAWARE RIVER AT NEW CASTLE, DEUSGS gauge | — | — | 2.51 ft | 19 hrs ago |
| Frenchman River at international boundaryUSGS gauge | — | 10 ft³/s | 4.26 ft | 19 hrs ago |
| MARSHYHOPE CREEK NEAR ADAMSVILLE, DEUSGS gauge | — | 13 ft³/s | 2.37 ft | 19 hrs ago |
| MURDERKILL RIVER AT BOWERS, DEUSGS gauge | — | — | 1.53 ft | 19 hrs ago |
| NANTICOKE RIVER NEAR BRIDGEVILLE, DEUSGS gauge | — | 32 ft³/s | 4.41 ft | 19 hrs ago |
| RED CLAY CREEK NEAR STANTON, DEUSGS gauge | — | 43 ft³/s | 7.79 ft | 19 hrs ago |
| SHELLPOT CREEK AT WILMINGTON, DEUSGS gauge | — | 3 ft³/s | 1.58 ft | 19 hrs ago |
Station links open the official monitoring page with charts and history.
About these readings
Readings come from USGS real-time monitoring stations — 22 sensors are currently reporting a water temperature in Delaware. Each figure is a point measurement at one sensor, usually on a river or stream — it doesn’t describe a whole lake or shoreline, and coverage varies across the state. Data is provisional and can be revised by the USGS.
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Conditions are for general information only and can change quickly. Always judge the water in person and follow posted advisories and local guidance before swimming or paddling.