Pennsylvania / Waters /
Blue Marsh Lake
Reservoir in Pennsylvania, near Bern Township, Bernville, Lower Heidleburg Township and Penn Township
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: Pennsylvania Department of Health HAB dashboard (last successful check 2026-11-02 21:20 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
- Discharge or advisory reported: to 1 report: Pennsylvania Department of Health HAB dashboard 1
Show records
The records are also in the report table on this page.
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 Blue Marsh Lake in Pennsylvania, last 12 months1,969Reported on the Blue Marsh Lake in Pennsylvania: 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 Blue Marsh Lake in Pennsylvania45%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 Blue Marsh Lake in Pennsylvania1Reported on the Blue Marsh Lake in Pennsylvania: 1 · 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 2026.
Source: pa-doh-habs. Records cover April 7, 2026 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 | No tracked source for this period |
| May 2025 | 0 | 0 | 0 | 744 | No tracked source for this period |
| June 2025 | 0 | 0 | 0 | 720 | No tracked source for this period |
| July 2025 | 0 | 0 | 0 | 744 | No tracked source for this period |
| August 2025 | 0 | 0 | 0 | 744 | No tracked source for this period |
| September 2025 | 0 | 0 | 0 | 720 | No tracked source for this period |
| October 2025 | 0 | 0 | 0 | 744 | No tracked source for this period |
| November 2025 | 0 | 0 | 0 | 720 | No tracked source for this period |
| December 2025 | 0 | 0 | 0 | 744 | No tracked source for this period |
| January 2026 | 0 | 0 | 0 | 744 | No tracked source for this period |
| February 2026 | 0 | 0 | 0 | 672 | No tracked source for this period |
| March 2026 | 0 | 0 | 0 | 744 | No tracked source for this period |
| April 2026 | 0 | 0 | 0 | 720 | Incomplete source coverage |
| May 2026 | 0 | 0 | 0 | 744 | |
| June 2026 | 157 | 0 | 157 | 720 | |
| July 2026 | 744 | 0 | 744 | 744 | |
| August 2026 | 744 | 0 | 744 | 744 | |
| September 2026 | 324 | 0 | 324 | 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
Source: pa-doh-habs. Records cover April 7, 2026 to November 2, 2026.
Show table
| Year | Hours with a discharge or advisory status | Share of the year | Coverage |
|---|---|---|---|
| 2026 | 1,969 | 26.8% | Incomplete source coverage |
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.
- pa-doh-habs: records from April 7, 2026 to the latest update
Reports linked to Blue Marsh Lake
| Start | End | Sewer operator | Outlet | Type | Volume | Source | Links |
|---|---|---|---|---|---|---|---|
| Jun 24, 2026, 11:10 AM EDT | still listed as in effect | not stated | Not provided | Cyanobacteria advisory (harmful blue-green algae) | volume not reported | Pennsylvania Department of Health HAB dashboard, record blue-marsh-lake-20260624, updated by the source Aug 31, 2026, 11:57 AM EDT, retrieved 2026-11-02 21:20 UTC · Read the original notice | Read report: Cyanobacteria advisory (harmful blue-green algae), , Jun 24, 2026, 11:10 AM EDT · Map |
All reports in Pennsylvania by year: 2026 (1 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
- Dry Brooks Boat Launch, Bern Township · Boat ramp
- Sheidy Road, Penn Township · Boat ramp
- State Hill Boat Launch, Lower Heidleburg Township · Boat ramp
Source: OpenBoatLaunch launch records (public agency data and OpenStreetMap, Open Database License). · Blue Marsh Lake on OpenBoatLaunch
Nearby waters
- Middle Creek Reservoir, PA No current status shown about 19 km away
- Speedwell Forge Lake, PA No current status shown about 30 km away
- Sweet Arrow Lake, PA No current status shown about 31 km away
- Lions Lake, PA No current status shown about 32 km away
- Struble Lake, PA No current status shown about 36 km away
Sources covering this water
- Pennsylvania Department of Health HAB dashboard · Latest check succeeded · Last successful check: 2026-11-02 21:20 UTC
1 record linked to this water. Updated .