DELAWARE RIVER AT DEL MEM BRIDGE AT WILMINGTON DE
USGS 01482100 · Delaware · reports discharge (live), water temperature, dissolved oxygen, specific conductance
Reading DELAWARE RIVER AT DEL MEM BRIDGE AT WILMINGTON DE…
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USGS 01482100 · Delaware · reports discharge (live), water temperature, dissolved oxygen, specific conductance
What the agencies suggest
Carry a pocket thermometer to monitor water temperatureNational Park Service
General guidance from the readings and the published lines named above, not a fishing forecast. Local rules and closures come first.
Reading Nov 5, 4:30 PM EST · provisional USGS data
Falling · 24 h
Discharge, last 7 days: 94 readings from Oct 29, 8:48 PM EDT to Nov 5, 4:30 PM EST; ranging 512 to 549,000 ft³/s; latest 962 ft³/s; 13 gaps in the record.
USGS provisional data may be revised. Source: USGS instantaneous values.
| Time | Discharge (ft³/s) | Water temp (°F) |
|---|---|---|
| Nov 5, 4:30 PM EST | 962 | 61.3 |
| Nov 5, 3:30 PM EST | 273,000 | 61.3 |
| Nov 5, 2:30 PM EST | 374,000 | 61.2 |
| Nov 5, 1:30 PM EST | 462,000 | 61.3 |
| Nov 5, 12:30 PM EST | 438,000 | 61.3 |
| Nov 5, 11:30 AM EST | 319,000 | 61.2 |
| Nov 5, 10:30 AM EST | 138,000 | 61 |
| Nov 5, 3:54 AM EST | 31,100 | – |
| Nov 5, 2:54 AM EST | 301,000 | – |
| Nov 5, 1:54 AM EST | 447,000 | – |
| Nov 5, 12:54 AM EST | 494,000 | – |
| Nov 4, 11:54 PM EST | 478,000 | – |
| Nov 4, 10:54 PM EST | 333,000 | – |
| Nov 4, 9:54 PM EST | 92,700 | – |
| Nov 4, 3:18 PM EST | 3,430 | 61 |
| Nov 4, 2:18 PM EST | 280,000 | 61 |
| Nov 4, 1:18 PM EST | 436,000 | 61 |
| Nov 4, 12:18 PM EST | 423,000 | 61.2 |
| Nov 4, 11:18 AM EST | 394,000 | 61 |
| Nov 4, 10:18 AM EST | 288,000 | 60.4 |
| Nov 4, 9:18 AM EST | 1,040 | 60.4 |
| Nov 4, 3:00 AM EST | 38,600 | – |
| Nov 4, 2:00 AM EST | 288,000 | – |
| Nov 4, 1:00 AM EST | 467,000 | – |
| Nov 4, 12:00 AM EST | 527,000 | – |
| Nov 3, 11:00 PM EST | 464,000 | – |
| Nov 3, 10:00 PM EST | 329,000 | – |
| Nov 3, 9:00 PM EST | 155,000 | – |
| Nov 3, 2:12 PM EST | 28,700 | – |
| Nov 3, 1:12 PM EST | 260,000 | – |
| Nov 3, 12:12 PM EST | 437,000 | – |
| Nov 3, 11:12 AM EST | 397,000 | – |
| Nov 3, 10:12 AM EST | 386,000 | – |
| Nov 3, 9:12 AM EST | 278,000 | – |
| Nov 3, 8:12 AM EST | 22,000 | – |
| Nov 3, 2:00 AM EST | 37,000 | – |
| Nov 3, 1:00 AM EST | 270,000 | – |
| Nov 3, 12:00 AM EST | 393,000 | – |
| Nov 2, 11:00 PM EST | 515,000 | – |
| Nov 2, 10:00 PM EST | 448,000 | – |
| Nov 2, 9:00 PM EST | 357,000 | – |
| Nov 2, 8:00 PM EST | 188,000 | 60.8 |
| Nov 2, 1:06 PM EST | 32,700 | 60.4 |
| Nov 2, 12:06 PM EST | 346,000 | 60.4 |
| Nov 2, 11:06 AM EST | 482,000 | 60.4 |
| Nov 2, 10:06 AM EST | 405,000 | 60.4 |
| Nov 2, 9:06 AM EST | 406,000 | 60.3 |
| Nov 2, 8:06 AM EST | 293,000 | 60.1 |
| Nov 2, 7:06 AM EST | 22,000 | 60.1 |
| Nov 2, 1:00 AM EST | 18,000 | 60.4 |
| Nov 2, 12:00 AM EST | 284,000 | 60.4 |
| Nov 1, 11:00 PM EST | 424,000 | 60.6 |
| Nov 1, 10:00 PM EST | 496,000 | 60.6 |
| Nov 1, 9:00 PM EST | 474,000 | 60.6 |
| Nov 1, 8:00 PM EST | 395,000 | 60.8 |
| Nov 1, 7:00 PM EST | 187,000 | 61.2 |
| Nov 1, 11:54 AM EST | 11,900 | 60.8 |
| Nov 1, 10:54 AM EST | 325,000 | 60.4 |
| Nov 1, 9:54 AM EST | 491,000 | 60.4 |
| Nov 1, 8:54 AM EST | 412,000 | 60.4 |
| Nov 1, 7:54 AM EST | 390,000 | 60.3 |
| Nov 1, 6:54 AM EST | 204,000 | 60.3 |
| Nov 1, 1:00 AM EDT | 27,700 | 60.6 |
| Nov 1, 12:00 AM EDT | 272,000 | 60.6 |
| Oct 31, 11:00 PM EDT | 434,000 | 60.8 |
| Oct 31, 10:00 PM EDT | 512,000 | 61 |
| Oct 31, 9:00 PM EDT | 482,000 | 60.8 |
| Oct 31, 8:00 PM EDT | 389,000 | 61.2 |
| Oct 31, 7:00 PM EDT | 202,000 | 61.2 |
| Oct 31, 11:48 AM EDT | 57,300 | 60.8 |
| Oct 31, 10:48 AM EDT | 361,000 | 60.6 |
| Oct 31, 9:48 AM EDT | 434,000 | 60.6 |
| Oct 31, 8:48 AM EDT | 405,000 | 60.8 |
| Oct 31, 7:48 AM EDT | 336,000 | 60.6 |
| Oct 31, 6:48 AM EDT | 156,000 | 60.3 |
| Oct 31, 12:12 AM EDT | 512 | 61 |
| Oct 30, 11:12 PM EDT | 258,000 | 61.2 |
| Oct 30, 10:12 PM EDT | 414,000 | 61.2 |
| Oct 30, 9:12 PM EDT | 549,000 | 61.3 |
| Oct 30, 8:12 PM EDT | 535,000 | 61.3 |
| Oct 30, 7:12 PM EDT | 449,000 | 61.5 |
| Oct 30, 6:12 PM EDT | 300,000 | 61.9 |
| Oct 30, 5:12 PM EDT | 23,300 | 61.7 |
| Oct 30, 10:54 AM EDT | 6,670 | 61 |
| Oct 30, 9:54 AM EDT | 270,000 | 61 |
| Oct 30, 8:54 AM EDT | 428,000 | 61.2 |
| Oct 30, 7:54 AM EDT | 491,000 | 61.2 |
| Oct 30, 6:54 AM EDT | 440,000 | 61 |
| Oct 30, 5:54 AM EDT | 326,000 | 61.2 |
| Oct 30, 4:54 AM EDT | 74,600 | 61.3 |
| Oct 29, 10:54 PM EDT | 32,200 | 61.3 |
| Oct 29, 9:54 PM EDT | 308,000 | 61.3 |
| Oct 29, 8:54 PM EDT | 470,000 | – |
| Oct 29, 8:48 PM EDT | 486,000 | – |
Water temperature, last 7 days: 170 readings from Oct 29, 9:33 PM EDT to Nov 5, 8:30 PM EST; ranging 60.1 to 61.9 °F; latest 61.3 °F.
USGS provisional data may be revised. Source: USGS instantaneous values.
| Time | Water temperature (°F) |
|---|---|
| Nov 5, 8:30 PM EST | 61.3 |
| Nov 5, 7:33 PM EST | 61.5 |
| Nov 5, 6:33 PM EST | 61.2 |
| Nov 5, 5:33 PM EST | 61.3 |
| Nov 5, 4:33 PM EST | 61.3 |
| Nov 5, 3:33 PM EST | 61.3 |
| Nov 5, 2:33 PM EST | 61.2 |
| Nov 5, 1:33 PM EST | 61.3 |
| Nov 5, 12:33 PM EST | 61.3 |
| Nov 5, 11:33 AM EST | 61.2 |
| Nov 5, 10:33 AM EST | 61 |
| Nov 5, 9:33 AM EST | 61 |
| Nov 5, 8:33 AM EST | 61 |
| Nov 5, 7:33 AM EST | 61 |
| Nov 5, 6:33 AM EST | 61 |
| Nov 5, 5:33 AM EST | 60.8 |
| Nov 5, 4:33 AM EST | 60.8 |
| Nov 5, 3:33 AM EST | 60.8 |
| Nov 5, 2:33 AM EST | 60.8 |
| Nov 5, 1:33 AM EST | 61 |
| Nov 5, 12:33 AM EST | 61 |
| Nov 4, 11:33 PM EST | 61.2 |
| Nov 4, 10:33 PM EST | 60.8 |
| Nov 4, 9:33 PM EST | 61 |
| Nov 4, 8:33 PM EST | 61 |
| Nov 4, 7:33 PM EST | 61 |
| Nov 4, 6:33 PM EST | 61.2 |
| Nov 4, 5:33 PM EST | 61.2 |
| Nov 4, 4:33 PM EST | 61 |
| Nov 4, 3:33 PM EST | 61 |
| Nov 4, 2:33 PM EST | 61 |
| Nov 4, 1:33 PM EST | 61 |
| Nov 4, 12:33 PM EST | 61.2 |
| Nov 4, 11:33 AM EST | 61 |
| Nov 4, 10:33 AM EST | 60.4 |
| Nov 4, 9:33 AM EST | 60.4 |
| Nov 4, 8:33 AM EST | 60.4 |
| Nov 4, 7:33 AM EST | 60.4 |
| Nov 4, 6:33 AM EST | 60.4 |
| Nov 4, 5:33 AM EST | 60.4 |
| Nov 4, 4:33 AM EST | 60.4 |
| Nov 4, 3:33 AM EST | 60.4 |
| Nov 4, 2:33 AM EST | 60.4 |
| Nov 4, 1:33 AM EST | 60.4 |
| Nov 4, 12:33 AM EST | 60.4 |
| Nov 3, 11:33 PM EST | 60.6 |
| Nov 3, 10:33 PM EST | 60.8 |
| Nov 3, 9:33 PM EST | 60.6 |
| Nov 3, 8:33 PM EST | 60.8 |
| Nov 3, 7:33 PM EST | 60.8 |
| Nov 3, 6:33 PM EST | 60.8 |
| Nov 3, 5:33 PM EST | 60.8 |
| Nov 3, 4:33 PM EST | 60.8 |
| Nov 3, 3:33 PM EST | 60.6 |
| Nov 3, 2:33 PM EST | 60.6 |
| Nov 3, 1:33 PM EST | 60.6 |
| Nov 3, 12:33 PM EST | 60.6 |
| Nov 3, 11:33 AM EST | 60.6 |
| Nov 3, 10:33 AM EST | 60.4 |
| Nov 3, 9:33 AM EST | 60.1 |
| Nov 3, 8:33 AM EST | 60.1 |
| Nov 3, 7:33 AM EST | 60.3 |
| Nov 3, 6:33 AM EST | 60.3 |
| Nov 3, 5:33 AM EST | 60.1 |
| Nov 3, 4:33 AM EST | 60.3 |
| Nov 3, 3:33 AM EST | 60.1 |
| Nov 3, 2:33 AM EST | 60.1 |
| Nov 3, 1:33 AM EST | 60.1 |
| Nov 3, 12:33 AM EST | 60.3 |
| Nov 2, 11:33 PM EST | 60.4 |
| Nov 2, 10:33 PM EST | 60.4 |
| Nov 2, 9:36 PM EST | 60.4 |
| Nov 2, 8:39 PM EST | 60.6 |
| Nov 2, 7:42 PM EST | 60.8 |
| Nov 2, 6:45 PM EST | 60.8 |
| Nov 2, 5:48 PM EST | 60.8 |
| Nov 2, 4:48 PM EST | 60.8 |
| Nov 2, 3:48 PM EST | 60.8 |
| Nov 2, 2:48 PM EST | 60.6 |
| Nov 2, 1:48 PM EST | 60.4 |
| Nov 2, 12:51 PM EST | 60.4 |
| Nov 2, 11:54 AM EST | 60.4 |
| Nov 2, 10:54 AM EST | 60.4 |
| Nov 2, 9:57 AM EST | 60.4 |
| Nov 2, 8:57 AM EST | 60.3 |
| Nov 2, 7:57 AM EST | 60.1 |
| Nov 2, 6:57 AM EST | 60.1 |
| Nov 2, 5:57 AM EST | 60.4 |
| Nov 2, 4:57 AM EST | 60.3 |
| Nov 2, 3:57 AM EST | 60.4 |
| Nov 2, 2:57 AM EST | 60.4 |
| Nov 2, 1:57 AM EST | 60.4 |
| Nov 2, 12:57 AM EST | 60.4 |
| Nov 1, 11:57 PM EST | 60.4 |
| Nov 1, 10:57 PM EST | 60.6 |
| Nov 1, 9:57 PM EST | 60.6 |
| Nov 1, 8:57 PM EST | 60.6 |
| Nov 1, 7:57 PM EST | 60.8 |
| Nov 1, 6:57 PM EST | 61.2 |
| Nov 1, 5:57 PM EST | 61 |
| Nov 1, 4:57 PM EST | 61 |
| Nov 1, 3:57 PM EST | 61 |
| Nov 1, 2:57 PM EST | 60.8 |
| Nov 1, 1:57 PM EST | 60.6 |
| Nov 1, 12:57 PM EST | 60.6 |
| Nov 1, 11:57 AM EST | 60.8 |
| Nov 1, 10:57 AM EST | 60.4 |
| Nov 1, 9:57 AM EST | 60.4 |
| Nov 1, 8:57 AM EST | 60.4 |
| Nov 1, 7:57 AM EST | 60.3 |
| Nov 1, 6:57 AM EST | 60.3 |
| Nov 1, 5:57 AM EST | 60.4 |
| Nov 1, 4:57 AM EST | 60.6 |
| Nov 1, 3:57 AM EST | 60.6 |
| Nov 1, 2:57 AM EST | 60.6 |
| Nov 1, 1:57 AM EST | 60.6 |
| Nov 1, 1:57 AM EDT | 60.4 |
| Nov 1, 12:57 AM EDT | 60.6 |
| Oct 31, 11:57 PM EDT | 60.6 |
| Oct 31, 10:57 PM EDT | 60.8 |
| Oct 31, 9:57 PM EDT | 61 |
| Oct 31, 8:57 PM EDT | 60.8 |
| Oct 31, 7:57 PM EDT | 61.2 |
| Oct 31, 6:57 PM EDT | 61.2 |
| Oct 31, 5:57 PM EDT | 61.2 |
| Oct 31, 4:57 PM EDT | 61.2 |
| Oct 31, 3:57 PM EDT | 61.2 |
| Oct 31, 2:57 PM EDT | 61.3 |
| Oct 31, 1:57 PM EDT | 61 |
| Oct 31, 12:57 PM EDT | 60.8 |
| Oct 31, 11:57 AM EDT | 60.8 |
| Oct 31, 10:57 AM EDT | 60.6 |
| Oct 31, 9:57 AM EDT | 60.6 |
| Oct 31, 8:57 AM EDT | 60.8 |
| Oct 31, 7:57 AM EDT | 60.6 |
| Oct 31, 6:57 AM EDT | 60.3 |
| Oct 31, 5:57 AM EDT | 61 |
| Oct 31, 4:57 AM EDT | 60.8 |
| Oct 31, 3:57 AM EDT | 60.8 |
| Oct 31, 2:57 AM EDT | 61 |
| Oct 31, 1:57 AM EDT | 61 |
| Oct 31, 12:57 AM EDT | 61 |
| Oct 30, 11:57 PM EDT | 61 |
| Oct 30, 10:57 PM EDT | 61.2 |
| Oct 30, 9:57 PM EDT | 61.2 |
| Oct 30, 8:57 PM EDT | 61.3 |
| Oct 30, 7:57 PM EDT | 61.3 |
| Oct 30, 6:57 PM EDT | 61.5 |
| Oct 30, 5:57 PM EDT | 61.9 |
| Oct 30, 4:57 PM EDT | 61.7 |
| Oct 30, 3:57 PM EDT | 61.7 |
| Oct 30, 2:57 PM EDT | 61.5 |
| Oct 30, 1:57 PM EDT | 61.5 |
| Oct 30, 12:57 PM EDT | 61.5 |
| Oct 30, 11:57 AM EDT | 61.2 |
| Oct 30, 10:57 AM EDT | 61 |
| Oct 30, 9:57 AM EDT | 61 |
| Oct 30, 8:57 AM EDT | 61.2 |
| Oct 30, 7:57 AM EDT | 61.2 |
| Oct 30, 6:57 AM EDT | 61 |
| Oct 30, 5:57 AM EDT | 61.2 |
| Oct 30, 4:57 AM EDT | 61.3 |
| Oct 30, 3:57 AM EDT | 61.2 |
| Oct 30, 2:57 AM EDT | 61.3 |
| Oct 30, 1:57 AM EDT | 61.2 |
| Oct 30, 12:57 AM EDT | 61.2 |
| Oct 29, 11:57 PM EDT | 61.2 |
| Oct 29, 10:57 PM EDT | 61.3 |
| Oct 29, 9:57 PM EDT | 61.3 |
| Oct 29, 9:33 PM EDT | 61.3 |
Map of USGS gauge 01482100 and the river around it
Where DELAWARE RIVER AT DEL MEM BRIDGE AT WILMINGTON DE sits, with 5 other gauges on the same river.
USGS publishes no daily statistics for this gauge, so the reading is not compared with the record.
Falling over 24 hours: discharge down 72%, from 3,430 to 962 ft³/s. Rising or falling means a change of more than 10% in discharge (or 0.2 ft of gauge height) over 24 hours; our rule of thumb, not a USGS class.
Federal guidance. Delaware DNREC publishes no water-temperature line for trout anglers that we found. The lines below are the National Park Service's, federal guidance, not a Delaware rule, with Delaware DNREC's own figure added:
Under the federal 68°F line. Water 61.3°F now; the highest in the last 24 hours was 61.5°F. That is under the 68°F at which the National Park Service, at Grand Teton National Park, recommends anglers stop fishing in the afternoon (“cease fishing at 2 p.m. when water temperatures are likely to exceed 68°F”). Water warms through the afternoon, so check again later in the day: “Carry a pocket thermometer to monitor water temperature.”
High water temperatures prompt fishing advisory in Grand Teton National Park (29 July 2022) (National Park Service)Species list not on file for this gauge. Check the Delaware DNREC, Division of Fish and Wildlife: Delaware freshwater trout fishing · Delaware fishing licensing and regulations.
Turn Around Don't Drown. “A mere 6 inches of fast-moving flood water can knock over an adult.” No flow number makes a crossing safe; if in doubt, stay out.
Turn Around Don't Drown (National Weather Service)Dissolved oxygen 8.6 mg/L at Nov 5, 8:30 PM EST; 7-day range 8.3–8.7 mg/L
Enough oxygen for coldwater fish: 8.6 mg/L meets the 6.5 mg/L EPA sets for coldwater fish (other life stages; eggs and fry need a 8 mg/L minimum).
Quality Criteria for Water 1986 (“Gold Book”): dissolved oxygen, Table 1; pH (U.S. Environmental Protection Agency)Specific conductance 9,480 µS/cm at Nov 5, 8:30 PM EST; 7-day range 4,860–11,300 µS/cm
Dissolved ions: Specific conductance rises with the ions dissolved in the water. No fishing threshold is published for it; compare with this gauge's own recent readings.
Conductivity (Electrical Conductance) and Water (U.S. Geological Survey)Guidance from the readings above and the published thresholds named with each line; not a fishing forecast, a safety guarantee or a statement about access. Local rules and closures come first.
The National Weather Service has no flood-stage gauge here, so no official flood category is shown.
Checked Nov 5, 8:42 PM EST; readings refresh at most every 15 minutes and statistics daily. Provisional USGS data can be revised. Conditions change: re-check before you go. This is general guidance, not a fishing forecast, a safety guarantee or a statement about access.