New Jersey / Waters /
Assunpink Lake
Reservoir in New Jersey, near Cooleys Corner and Roosevelt
Current status
No current status is assigned to this water outline. Check the water page for reports and any estimated downstream stretches. Why this status, and its source
Map sources: water outlines and launches from OpenBoatLaunch and OpenStreetMap contributors (Open Database License); wastewater outlets from EPA and state records; downstream estimates by DirtyWaterWatch using U.S. Geological Survey maps and flow data. Base map: OpenFreeMap and OpenMapTiles.
Square boat markers mark boat launches listed by OpenBoatLaunch.
Bookmark this water page and check it before each trip · Report a missing notice or error
About this status
Why this status: No current status: no report we track sets a status on this water outline now.
How long each status lasts, and why
Sources checked: Division of Water Monitoring, Standards and Pesticide Control (last successful check 2026-11-02 21:19 UTC). Status by DirtyWaterWatch, updated 2026-11-02 21:26 UTC.
No status does not mean the water is safe. Follow posted signs and local health advice.
Updated .
The last 90 days
No discharge, advisory or caution periods are shown for this water in this time span. Check downstream stretches and source coverage.
Source: DirtyWaterWatch calculations using the reports named above and the published status rules. Updated 2026-11-02 21:26 UTC.
Reported discharges over time
- Hours with a discharge or advisory status on the Assunpink Lake in New Jersey, last 12 months410Reported on the Assunpink Lake in New Jersey: 0 · Arriving from outfalls upstream, estimated: 0December 2025 to November 2026Red hours by the map's rules: each discharge to its reported end plus the state's post-discharge period; overlapping hours count once.
- 2026 season with a discharge or advisory status on the Assunpink Lake in New Jersey9.3%May to October 2026Share of May 1 to October 31 hours with red status by the map's rules, of the hours a source covered.
- Records behind the last-90-days strip for the Assunpink Lake in New Jersey0Reported on the Assunpink Lake in New Jersey: 0 · Arriving from outfalls upstream, estimated: 0last 90 daysEvery distinct record the strip lists for its red, yellow and unresolved hours, notices and unresolved reports included; counted as the strip counts them.
Hours with a discharge or advisory status per month
Hours when this water had a discharge or advisory status under DirtyWaterWatch rules.
- Discharge or advisory reported
- No tracked source for this period
- Incomplete source coverage
No tracked source covers January 2022 to March 2025. 2 discharges reported to last more than 31 days are counted as 31 days.
Source: nj-hab. Records cover April 2, 2025 to November 2, 2026.
Show table
| Month | Hours with a discharge or advisory status | Hours from post-discharge periods | Hours from official advisories only | Hours in the month | Coverage |
|---|---|---|---|---|---|
| January 2022 | 0 | 0 | 0 | 744 | No tracked source for this period |
| February 2022 | 0 | 0 | 0 | 672 | No tracked source for this period |
| March 2022 | 0 | 0 | 0 | 744 | No tracked source for this period |
| April 2022 | 0 | 0 | 0 | 720 | No tracked source for this period |
| May 2022 | 0 | 0 | 0 | 744 | No tracked source for this period |
| June 2022 | 0 | 0 | 0 | 720 | No tracked source for this period |
| July 2022 | 0 | 0 | 0 | 744 | No tracked source for this period |
| August 2022 | 0 | 0 | 0 | 744 | No tracked source for this period |
| September 2022 | 0 | 0 | 0 | 720 | No tracked source for this period |
| October 2022 | 0 | 0 | 0 | 744 | No tracked source for this period |
| November 2022 | 0 | 0 | 0 | 720 | No tracked source for this period |
| December 2022 | 0 | 0 | 0 | 744 | No tracked source for this period |
| January 2023 | 0 | 0 | 0 | 744 | No tracked source for this period |
| February 2023 | 0 | 0 | 0 | 672 | No tracked source for this period |
| March 2023 | 0 | 0 | 0 | 744 | No tracked source for this period |
| April 2023 | 0 | 0 | 0 | 720 | No tracked source for this period |
| May 2023 | 0 | 0 | 0 | 744 | No tracked source for this period |
| June 2023 | 0 | 0 | 0 | 720 | No tracked source for this period |
| July 2023 | 0 | 0 | 0 | 744 | No tracked source for this period |
| August 2023 | 0 | 0 | 0 | 744 | No tracked source for this period |
| September 2023 | 0 | 0 | 0 | 720 | No tracked source for this period |
| October 2023 | 0 | 0 | 0 | 744 | No tracked source for this period |
| November 2023 | 0 | 0 | 0 | 720 | No tracked source for this period |
| December 2023 | 0 | 0 | 0 | 744 | No tracked source for this period |
| January 2024 | 0 | 0 | 0 | 744 | No tracked source for this period |
| February 2024 | 0 | 0 | 0 | 696 | No tracked source for this period |
| March 2024 | 0 | 0 | 0 | 744 | No tracked source for this period |
| April 2024 | 0 | 0 | 0 | 720 | No tracked source for this period |
| May 2024 | 0 | 0 | 0 | 744 | No tracked source for this period |
| June 2024 | 0 | 0 | 0 | 720 | No tracked source for this period |
| July 2024 | 0 | 0 | 0 | 744 | No tracked source for this period |
| August 2024 | 0 | 0 | 0 | 744 | No tracked source for this period |
| September 2024 | 0 | 0 | 0 | 720 | No tracked source for this period |
| October 2024 | 0 | 0 | 0 | 744 | No tracked source for this period |
| November 2024 | 0 | 0 | 0 | 720 | No tracked source for this period |
| December 2024 | 0 | 0 | 0 | 744 | No tracked source for this period |
| January 2025 | 0 | 0 | 0 | 744 | No tracked source for this period |
| February 2025 | 0 | 0 | 0 | 672 | No tracked source for this period |
| March 2025 | 0 | 0 | 0 | 744 | No tracked source for this period |
| April 2025 | 0 | 0 | 0 | 720 | Incomplete source coverage |
| May 2025 | 0 | 0 | 0 | 744 | |
| June 2025 | 131 | 0 | 131 | 720 | |
| July 2025 | 744 | 0 | 744 | 744 | |
| August 2025 | 154 | 0 | 154 | 744 | |
| September 2025 | 0 | 0 | 0 | 720 | |
| October 2025 | 0 | 0 | 0 | 744 | |
| November 2025 | 0 | 0 | 0 | 720 | |
| December 2025 | 0 | 0 | 0 | 744 | |
| January 2026 | 0 | 0 | 0 | 744 | |
| February 2026 | 0 | 0 | 0 | 672 | |
| March 2026 | 0 | 0 | 0 | 744 | |
| April 2026 | 0 | 0 | 0 | 720 | |
| May 2026 | 0 | 0 | 0 | 744 | |
| June 2026 | 0 | 0 | 0 | 720 | |
| July 2026 | 410 | 0 | 410 | 744 | |
| August 2026 | 0 | 0 | 0 | 744 | |
| September 2026 | 0 | 0 | 0 | 720 | |
| October 2026 | 0 | 0 | 0 | 744 | |
| November 2026 | 0 | 0 | 0 | 42 |
Hours with a discharge or advisory status per year
Hours with a discharge or advisory status each year under DirtyWaterWatch rules; 2026 to date.
- Discharge or advisory reported
- Incomplete source coverage
2 discharges reported to last more than 31 days are counted as 31 days.
Source: nj-hab. Records cover April 2, 2025 to November 2, 2026.
Show table
| Year | Hours with a discharge or advisory status | Share of the year | Coverage |
|---|---|---|---|
| 2025 | 1,029 | 11.7% | Incomplete source coverage |
| 2026 | 410 | 5.6% |
How these charts are counted
We count each discharge once. Where a source publishes notices and confirmed reports, we use confirmed reports for an operator's month when available; otherwise we use notices. We combine revisions and exclude duplicate state reports copied by the U.S. Environmental Protection Agency (EPA). Monthly and yearly totals appear separately. Status hours follow this site's rules. Shaded gaps mean missing coverage, not zero discharges.
- nj-hab: records from April 2, 2025 to the latest update
Reports linked to Assunpink Lake
| Start | End | Sewer operator | Outlet | Type | Volume | Source | Links |
|---|---|---|---|---|---|---|---|
| Jul 1, 2026, 10:32 AM EDT | still listed as in effect | not stated | Not provided | Cyanobacteria advisory (harmful blue-green algae) | volume not reported | NJDEP Harmful Algal Bloom Program (Division of Water Monitoring, Standards and Pesticide Control), record cff7443a-02ba-428b-ad5b-f6c38e3ca886, updated by the source Jul 4, 2026, 12:00 PM EDT, retrieved 2026-11-02 21:19 UTC · Read the original notice | Read report: Cyanobacteria advisory (harmful blue-green algae), , Jul 1, 2026, 10:32 AM EDT · Map |
| Jul 1, 2026, 10:15 AM EDT | still listed as in effect | not stated | Not provided | Cyanobacteria advisory (harmful blue-green algae) | volume not reported | NJDEP Harmful Algal Bloom Program (Division of Water Monitoring, Standards and Pesticide Control), record b52c1afa-3220-4bc0-8542-bf1a8087f837, updated by the source Jul 4, 2026, 12:00 PM EDT, retrieved 2026-11-02 21:19 UTC · Read the original notice | Read report: Cyanobacteria advisory (harmful blue-green algae), , Jul 1, 2026, 10:15 AM EDT · Map |
| Jul 7, 2025, 9:59 AM EDT | Nov 19, 2025, 11:27 AM EST | not stated | Not provided | Cyanobacteria advisory (harmful blue-green algae) | volume not reported | NJDEP Harmful Algal Bloom Program (Division of Water Monitoring, Standards and Pesticide Control), record 460ae3ec-eba7-48a4-aafc-5bd5e603a732, updated by the source Jul 11, 2025, 12:00 PM EDT, retrieved 2026-11-02 21:19 UTC · Read the original notice | Open record below · Map |
Read the full record | |||||||
| Jun 25, 2025, 1:25 PM EDT | Nov 19, 2025, 11:30 AM EST | not stated | Not provided | Cyanobacteria advisory (harmful blue-green algae) | volume not reported | NJDEP Harmful Algal Bloom Program (Division of Water Monitoring, Standards and Pesticide Control), record 3036be29-707d-4a96-9d4a-9f7df3d764d5, updated by the source Jul 2, 2025, 12:00 PM EDT, retrieved 2026-11-02 21:19 UTC · Read the original notice | Open record below · Map |
Read the full record | |||||||
All reports in New Jersey by year: 2026 (2 here) · 2025 (2 here)
Wastewater outlets on this water
Outfall: a pipe or outlet where wastewater enters a water body.
No wastewater outlet in our records is linked to this water.
Boat launches
- Assunpink Wildlife Management Area Boat Ramp, Cooleys Corner · Boat ramp
- Assunpink Wildlife Management Area Cartop Launch, Cooleys Corner · Carry-in launch (canoe and kayak)
- Assunpink Wildlife Management Area Cartop Launch, Roosevelt · Carry-in launch (canoe and kayak)
Source: OpenBoatLaunch launch records (public agency data and OpenStreetMap, Open Database License). · Assunpink Lake on OpenBoatLaunch
Nearby waters
- Rosedale Lake, NJ No current status shown about 24 km away
- Manasquan Reservoir, NJ Discharge or advisory reported about 26 km away
- Delaware and Raritan Canal, NJ No current status shown about 27 km away
- Manasquan River, NJ No current status shown about 28 km away
- Lake Horicon, NJ No current status shown about 28 km away
Sources covering this water
- Division of Water Monitoring, Standards and Pesticide Control · Latest check succeeded · Last successful check: 2026-11-02 21:19 UTC
4 records linked to this water. Updated .