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Combined sewer overflow (CSO) reported — New York City Department of Environmental Protection, Nov 6, 2026

Advisory active · NYC DEP Waterbody Advisory System

Source: NYC DEP Waterbody Advisory System via NYC DEP Waterbody Advisory System (dashboard JSON API), record WQ-41-20261106T0200, updated by the source Nov 6, 2026, 2:00 AM EST, retrieved 2026-11-06 08:47 UTC · Read the original notice

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1. Reported wastewater outlet

Operator named in the record: New York City Department of Environmental Protection. Outlet: not stated. Location: 40.67482, -73.99013; location source: given in the source record, accurate to about 941 metres.

Outfall: a pipe or outlet where wastewater enters a water body.

2. Waters named in the notice

The notice names: “Gowanus Canal, Inner”. DirtyWaterWatch links this report to Gowanus Canal, NY. Match basis: the report's location, matched to the nearest tracked water.

3. Estimated downstream stretch

We estimate routes only on rivers before they become tidal. We do not estimate routes through tidal water or lakes.

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When it happened and when it was reported

Event and notice times use Eastern Time (EST or EDT). Retrieval times use Coordinated Universal Time (UTC).

Started

Nov 6, 2026, 2 AM EST

Ended

Nov 6, 2026, 8 AM EST

Detail provided by the source

Times known to the hour

Reported to the source

not given

Published

not given

Source last updated

Nov 6, 2026, 2:00 AM EST

Last retrieved by DirtyWaterWatch

2026-11-06 08:47 UTC

What and how much

Type

Combined sewer overflow (CSO): sewage mixed with rainwater spills from a shared sewer system.

Status in the record

Advisory active

Material

not stated

Volume

volume not reported (not stated whether estimated or measured)

Volume as reported

none

Advice from NYC DEP Waterbody Advisory System

“On Advisory until 11/6/2026 8:00:00 AM”

Advice period

This report does not state a period. See the rule DirtyWaterWatch applies and its source.

Basis

not stated

Status history from this report

• Discharge or advisory reported Gowanus Canal: Official advisory in effect, Nov 6, 2026, 2:00 AM EST to Nov 6, 2026, 8:00 AM EST (the end is scheduled: a new report can change it)

Source: DirtyWaterWatch calculations using this report and the published status rules. Updated 2026-11-06 09:03 UTC.

Source and versions

Source

NYC DEP Waterbody Advisory System (dashboard JSON API)

Source record number

WQ-41-20261106T0200

Original notice

Read the original notice

Earlier version

None: this is the first record

Later versions

None

{
  "waterbody_id": "41",
  "name": "Gowanus Canal, Inner",
  "class": "SC",
  "rain_gauge": "RH",
  "first_seen_at": "2026-11-06T03:47:22-05:00",
  "last_seen_at": "2026-11-06T03:47:22-05:00",
  "until": "2026-11-06T08:00:00-05:00",
  "model_run": "2026-11-06T02:00:00-05:00",
  "volume": 0,
  "history": [
    {
      "occurredOn": "2026-11-06T02:00:00",
      "duration": 6,
      "message": "On Advisory until 11/6/2026 8:00:00 AM",
      "volume": 0,
      "seen_at": "2026-11-06T03:47:22-05:00"
    }
  ],
  "layer_wq": {
    "Advisory": 0,
    "Expires": -62135596800000,
    "Hours": 0,
    "Class": "SD",
    "Activity2": "Minimize Contact",
    "Indicator_": "Fecal Coliform",
    "Rain_Gauge": "RH",
    "Prim_RainG": "Red Hook",
    "Sec_RainG": "Owls Head",
    "Tri_RainG": "Newtown Creek",
    "Rainfall_T": 0.1,
    "peak_inten": 0.03,
    "manual_ove": 0,
    "WBID": 20,
    "MapID": "20"
  },
  "layer_csov2": {
    "Advisory": 1,
    "Expires": 1793966400000,
    "Hours": 6,
    "Class": "SD",
    "Activity2": "Minimize Contact",
    "Indicator_": "Fecal Coliform",
    "Rain_Gauge": "RH",
    "Prim_RainG": "Red Hook",
    "Sec_RainG": "Owls Head",
    "Tri_RainG": "Newtown Creek",
    "Rainfall_T": 0.1,
    "peak_inten": 0.1,
    "manual_ove": 0,
    "WBID": 20,
    "MapID": "20",
    "Volume": 0.5812800000000001
  },
  "polygon_bbox": [
    -73.999595,
    40.667885,
    -73.986706,
    40.681765
  ]
}