Cyanobacteria advisory (harmful blue-green algae) reported, Jun 11, 2026

Advisory lifted · Pennsylvania Department of Health HAB dashboard

Source: Pennsylvania Department of Health HAB dashboard, record moyers-mill-run-20260611, updated by the source Sep 10, 2026, 11:10 AM EDT, retrieved 2026-11-02 21:20 UTC · Read the original notice

Current status from this report

This report does not set a map status as of Nov 2, 2026, 4:26 PM EST. Check its dates and the status rules.

A report is not a test of the water. See how we assign statuses.

Read the original notice · Report an error

1. Reported wastewater outlet

Operator named in the record: not named. Outlet: not stated. Location: 40.80777, -77.17736; location source: given in the source record.

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

2. Waters named in the notice

The notice names: “Moyers Mill Run”. DirtyWaterWatch links this report to Walker Lake, PA. 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.

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.

Open on the main map

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: Jun 11, 2026, 11:10 AM EDT
Ended: Oct 6, 2026, 12:10 PM EDT
Detail provided by the source: Times known to the minute
Reported to the source: not given
Published: not given
Source last updated: Sep 10, 2026, 11:10 AM EDT
Last retrieved by DirtyWaterWatch: 2026-11-02 21:20 UTC

What and how much

Type: Cyanobacteria (harmful blue-green algae) can make water unfit for contact; the issuing authority decides when its advisory ends.
Status in the record: Advisory lifted
Material: “cyanobacteria (harmful algal bloom)”
Volume: volume not reported (not stated whether estimated or measured)
Volume as reported: none

Advice from Pennsylvania Department of Health HAB dashboard

“Avoid Contact (Red) (highest Department of Health response level in this period)”
Pennsylvania Department of Health HAB dashboard

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 Walker Lake: Official advisory in effect, Jun 11, 2026, 11:10 AM EDT to Oct 6, 2026, 12:10 PM EDT

Source: DirtyWaterWatch calculations using this report and the published status rules. Updated 2026-11-02 21:26 UTC.

Source and versions

Source: Pennsylvania Department of Health HAB dashboard
Source record number: moyers-mill-run-20260611
Original notice: Read the original notice
Earlier version: None: this is the first record
Later versions: None

Record details

Record details
Record identifier	pa-doh-habs:moyers-mill-run-20260611
Source identifier	pa-doh-habs
Source record number	moyers-mill-run-20260611
Earlier version	Not provided
Type	Cyanobacteria advisory (harmful blue-green algae)
Status in the report	Advisory lifted
Sewer operator identifier	Not provided
Sewer operator	Not provided
Federal wastewater discharge permit (NPDES)	Not provided
Outlet number	Not provided
Outlet name	Not provided
Water named in the report	Moyers Mill Run
Linked waters	walker-lake-pa
How this report was linked to the water	the report's location, matched to the nearest tracked water
Latitude	40.808
Longitude	-77.177
Location source	given in the source record
Location accuracy, in metres	Not provided
Started	Jun 11, 2026, 11:10 AM EDT (2026-06-11T11:10:00-04:00)
Ended	Oct 6, 2026, 12:10 PM EDT (2026-10-06T12:10:00-04:00)
Detail provided by the source	to the minute
Reported to the source	Not provided
Published	Not provided
Source last updated	Sep 10, 2026, 11:10 AM EDT (2026-09-10T11:10:00-04:00)
Last retrieved by DirtyWaterWatch	Nov 2, 2026, 4:20 PM EST (2026-11-02T21:20:31Z)
Material	cyanobacteria (harmful algal bloom)
Volume, in gallons	Not provided
Volume as reported	Not provided
How volume was determined	not stated whether estimated or measured
Authority	Pennsylvania Department of Health HAB dashboard
Advice	Avoid Contact (Red) (highest Department of Health response level in this period)
Advice period, in hours	Not provided
Basis of the advice period	Not provided
Original notice	https://www.pa.gov/agencies/health/programs/environmental-health/habs-dashboard

Original source data

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  "samples": [
    {
      "sample_time": "2026-06-11T11:10:00-04:00",
      "Sample_reason": "Routine Sampling",
      "Cyano_BOL_c1st": 629,
      "Anatoxin_A_C1st_BoL": 0.3,
      "Cylindrospermopsin_c1st_BOL": 0.08,
      "Microcystin_C1st_BOL": 0,
      "Saxitoxin_C1st_BoL": 0.04,
      "sample_year": 2026,
      "str_Cyanobacteria_ID_GIS_Key_ID": null,
      "Latitude": 40.80777,
      "Longitude": -77.17736,
      "Survey123ID": null,
      "GlobalID": null,
      "ID": null,
      "hour": 11,
      "mins": 10,
      "time": 1793373000000,
      "newdateobs": "11JUN2026:11:10:00",
      "hour_char": 11,
      "mins_char": "10",
      "TIME_OF_SAMPLE": "11:10",
      "Survey_date": null,
      "Sequence_Num": "105",
      "Sample_Type": "WaterSample",
      "sample_year_Char": "2026",
      "Response_Level": "Advisory (Yellow)",
      "dateobs": 1781150400000,
      "sample_month": "Jun",
      "Waterbody": "Moyers Mill Run",
      "ObjectId": 102
    },
    {
      "sample_time": "2026-06-23T12:00:00-04:00",
      "Sample_reason": "Routine Sampling",
      "Cyano_BOL_c1st": 162503,
      "Anatoxin_A_C1st_BoL": 0.13,
      "Cylindrospermopsin_c1st_BOL": 0.1,
      "Microcystin_C1st_BOL": 12.9,
      "Saxitoxin_C1st_BoL": 0.1,
      "sample_year": 2026,
      "str_Cyanobacteria_ID_GIS_Key_ID": null,
      "Latitude": 40.80777,
      "Longitude": -77.17736,
      "Survey123ID": null,
      "GlobalID": null,
      "ID": null,
      "hour": 12,
      "mins": 0,
      "time": 1793376000000,
      "newdateobs": "23JUN2026:12:00:00",
      "hour_char": 12,
      "mins_char": "00",
      "TIME_OF_SAMPLE": "12:00",
      "Survey_date": null,
      "Sequence_Num": "124",
      "Sample_Type": "WaterSample",
      "sample_year_Char": "2026",
      "Response_Level": "Avoid Contact (Red)",
      "dateobs": 1782187200000,
      "sample_month": "Jun",
      "Waterbody": "Moyers Mill Run",
      "ObjectId": 241
    },
    {
      "sample_time": "2026-07-09T11:30:00-04:00",
      "Sample_reason": "Routine Sampling",
      "Cyano_BOL_c1st": 19730,
      "Anatoxin_A_C1st_BoL": 2.35,
      "Cylindrospermopsin_c1st_BOL": 0.08,
      "Microcystin_C1st_BOL": 23.65,
      "Saxitoxin_C1st_BoL": 0.04,
      "sample_year": 2026,
      "str_Cyanobacteria_ID_GIS_Key_ID": null,
      "Latitude": 40.80777,
      "Longitude": -77.17736,
      "Survey123ID": null,
      "GlobalID": null,
      "ID": null,
      "hour": 11,
      "mins": 30,
      "time": 1793374200000,
      "newdateobs": "09JUL2026:11:30:00",
      "hour_char": 11,
      "mins_char": "30",
      "TIME_OF_SAMPLE": "11:30",
      "Survey_date": null,
      "Sequence_Num": "141",
      "Sample_Type": "WaterSample",
      "sample_year_Char": "2026",
      "Response_Level": "Avoid Contact (Red)",
      "dateobs": 1783569600000,
      "sample_month": "Jul",
      "Waterbody": "Moyers Mill Run",
      "ObjectId": 401
    },
    {
      "sample_time": "2026-07-22T11:40:00-04:00",
      "Sample_reason": "Routine Sampling",
      "Cyano_BOL_c1st": 11946,
      "Anatoxin_A_C1st_BoL": 1.72,
      "Cylindrospermopsin_c1st_BOL": 0.08,
      "Microcystin_C1st_BOL": 0.84,
      "Saxitoxin_C1st_BoL": 0.04,
      "sample_year": 2026,
      "str_Cyanobacteria_ID_GIS_Key_ID": null,
      "Latitude": 40.80777,
      "Longitude": -77.17736,
      "Survey123ID": null,
      "GlobalID": null,
      "ID": null,
      "hour": 11,
      "mins": 40,
      "time": 1793374800000,
      "newdateobs": "22JUL2026:11:40:00",
      "hour_char": 11,
      "mins_char": "40",
      "TIME_OF_SAMPLE": "11:40",
      "Survey_date": null,
      "Sequence_Num": "160",
      "Sample_Type": "WaterSample",
      "sample_year_Char": "2026",
      "Response_Level": "Advisory (Yellow)",
      "dateobs": 1784692800000,
      "sample_month": "Jul",
      "Waterbody": "Moyers Mill Run",
      "ObjectId": 473
    },
    {
      "sample_time": "2026-07-22T11:50:00-04:00",
      "Sample_reason": "Routine Sampling",
      "Cyano_BOL_c1st": 13990,
      "Anatoxin_A_C1st_BoL": 1.11,
      "Cylindrospermopsin_c1st_BOL": 0.08,
      "Microcystin_C1st_BOL": 12.48,
      "Saxitoxin_C1st_BoL": 0.04,
      "sample_year": 2026,
      "str_Cyanobacteria_ID_GIS_Key_ID": null,
      "Latitude": 40.80777,
      "Longitude": -77.17736,
      "Survey123ID": null,
      "GlobalID": null,
      "ID": null,
      "hour": 11,
      "mins": 50,
      "time": 1793375400000,
      "newdateobs": "22JUL2026:11:50:00",
      "hour_char": 11,
      "mins_char": "50",
      "TIME_OF_SAMPLE": "11:50",
      "Survey_date": null,
      "Sequence_Num": "161",
      "Sample_Type": "WaterSample",
      "sample_year_Char": "2026",
      "Response_Level": "Avoid Contact (Red)",
      "dateobs": 1784692800000,
      "sample_month": "Jul",
      "Waterbody": "Moyers Mill Run",
      "ObjectId": 474
    },
    {
      "sample_time": "2026-08-05T11:15:00-04:00",
      "Sample_reason": "Routine Sampling",
      "Cyano_BOL_c1st": 30370,
      "Anatoxin_A_C1st_BoL": 0.3,
      "Cylindrospermopsin_c1st_BOL": 0.08,
      "Microcystin_C1st_BOL": 10.95,
      "Saxitoxin_C1st_BoL": 0.04,
      "sample_year": 2026,
      "str_Cyanobacteria_ID_GIS_Key_ID": null,
      "Latitude": 40.80777,
      "Longitude": -77.17736,
      "Survey123ID": null,
      "GlobalID": null,
      "ID": null,
      "hour": 11,
      "mins": 15,
      "time": 1793373300000,
      "newdateobs": "05AUG2026:11:15:00",
      "hour_char": 11,
      "mins_char": "15",
      "TIME_OF_SAMPLE": "11:15",
      "Survey_date": null,
      "Sequence_Num": "181",
      "Sample_Type": "WaterSample",
      "sample_year_Char": "2026",
      "Response_Level": "Avoid Contact (Red)",
      "dateobs": 1785902400000,
      "sample_month": "Aug",
      "Waterbody": "Moyers Mill Run",
      "ObjectId": 369
    },
    {
      "sample_time": "2026-08-05T11:30:00-04:00",
      "Sample_reason": "Routine Sampling",
      "Cyano_BOL_c1st": 4344,
      "Anatoxin_A_C1st_BoL": 0.3,
      "Cylindrospermopsin_c1st_BOL": 0.08,
      "Microcystin_C1st_BOL": 9.41,
      "Saxitoxin_C1st_BoL": 0.04,
      "sample_year": 2026,
      "str_Cyanobacteria_ID_GIS_Key_ID": null,
      "Latitude": 40.80777,
      "Longitude": -77.17736,
      "Survey123ID": null,
      "GlobalID": null,
      "ID": null,
      "hour": 11,
      "mins": 30,
      "time": 1793374200000,
      "newdateobs": "05AUG2026:11:30:00",
      "hour_char": 11,
      "mins_char": "30",
      "TIME_OF_SAMPLE": "11:30",
      "Survey_date": null,
      "Sequence_Num": "182",
      "Sample_Type": "WaterSample",
      "sample_year_Char": "2026",
      "Response_Level": "Avoid Contact (Red)",
      "dateobs": 1785902400000,
      "sample_month": "Aug",
      "Waterbody": "Moyers Mill Run",
      "ObjectId": 370
    },
    {
      "sample_time": "2026-08-19T11:20:00-04:00",
      "Sample_reason": "Routine Sampling",
      "Cyano_BOL_c1st": 4510,
      "Anatoxin_A_C1st_BoL": 0.3,
      "Cylindrospermopsin_c1st_BOL": 0.08,
      "Microcystin_C1st_BOL": 0.5,
      "Saxitoxin_C1st_BoL": 0.04,
      "sample_year": 2026,
      "str_Cyanobacteria_ID_GIS_Key_ID": null,
      "Latitude": 40.80777,
      "Longitude": -77.17736,
      "Survey123ID": null,
      "GlobalID": null,
      "ID": null,
      "hour": 11,
      "mins": 20,
      "time": 1793373600000,
      "newdateobs": "19AUG2026:11:20:00",
      "hour_char": 11,
      "mins_char": "20",
      "TIME_OF_SAMPLE": "11:20",
      "Survey_date": null,
      "Sequence_Num": "201",
      "Sample_Type": "WaterSample",
      "sample_year_Char": "2026",
      "Response_Level": "Advisory (Yellow)",
      "dateobs": 1787112000000,
      "sample_month": "Aug",
      "Waterbody": "Moyers Mill Run",
      "ObjectId": 657
    },
    {
      "sample_time": "2026-08-19T11:35:00-04:00",
      "Sample_reason": "Routine Sampling",
      "Cyano_BOL_c1st": 28689,
      "Anatoxin_A_C1st_BoL": 1.66,
      "Cylindrospermopsin_c1st_BOL": 0.08,
      "Microcystin_C1st_BOL": 14.74,
      "Saxitoxin_C1st_BoL": 0.04,
      "sample_year": 2026,
      "str_Cyanobacteria_ID_GIS_Key_ID": null,
      "Latitude": 40.80777,
      "Longitude": -77.17736,
      "Survey123ID": null,
      "GlobalID": null,
      "ID": null,
      "hour": 11,
      "mins": 35,
      "time": 1793374500000,
      "newdateobs": "19AUG2026:11:35:00",
      "hour_char": 11,
      "mins_char": "35",
      "TIME_OF_SAMPLE": "11:35",
      "Survey_date": null,
      "Sequence_Num": "202",
      "Sample_Type": "WaterSample",
      "sample_year_Char": "2026",
      "Response_Level": "Avoid Contact (Red)",
      "dateobs": 1787112000000,
      "sample_month": "Aug",
      "Waterbody": "Moyers Mill Run",
      "ObjectId": 658
    },
    {
      "sample_time": "2026-09-10T11:00:00-04:00",
      "Sample_reason": "Routine Sampling",
      "Cyano_BOL_c1st": 2627,
      "Anatoxin_A_C1st_BoL": 0.3,
      "Cylindrospermopsin_c1st_BOL": 0,
      "Microcystin_C1st_BOL": 0.5,
      "Saxitoxin_C1st_BoL": 0,
      "sample_year": 2026,
      "str_Cyanobacteria_ID_GIS_Key_ID": null,
      "Latitude": 40.80777,
      "Longitude": -77.17736,
      "Survey123ID": null,
      "GlobalID": null,
      "ID": null,
      "hour": 11,
      "mins": 0,
      "time": 1793372400000,
      "newdateobs": "10SEP2026:11:00:00",
      "hour_char": 11,
      "mins_char": "00",
      "TIME_OF_SAMPLE": "11:00",
      "Survey_date": null,
      "Sequence_Num": "222",
      "Sample_Type": "WaterSample",
      "sample_year_Char": "2026",
      "Response_Level": "Advisory (Yellow)",
      "dateobs": 1789012800000,
      "sample_month": "Sep",
      "Waterbody": "Moyers Mill Run",
      "ObjectId": 927
    },
    {
      "sample_time": "2026-09-10T11:10:00-04:00",
      "Sample_reason": "Routine Sampling",
      "Cyano_BOL_c1st": 13510,
      "Anatoxin_A_C1st_BoL": 2.02,
      "Cylindrospermopsin_c1st_BOL": 0,
      "Microcystin_C1st_BOL": 13.01,
      "Saxitoxin_C1st_BoL": 0,
      "sample_year": 2026,
      "str_Cyanobacteria_ID_GIS_Key_ID": null,
      "Latitude": 40.80777,
      "Longitude": -77.17736,
      "Survey123ID": null,
      "GlobalID": null,
      "ID": null,
      "hour": 11,
      "mins": 10,
      "time": 1793373000000,
      "newdateobs": "10SEP2026:11:10:00",
      "hour_char": 11,
      "mins_char": "10",
      "TIME_OF_SAMPLE": "11:10",
      "Survey_date": null,
      "Sequence_Num": "223",
      "Sample_Type": "WaterSample",
      "sample_year_Char": "2026",
      "Response_Level": "Avoid Contact (Red)",
      "dateobs": 1789012800000,
      "sample_month": "Sep",
      "Waterbody": "Moyers Mill Run",
      "ObjectId": 928
    }
  ],
  "lifting_samples": [
    {
      "sample_time": "2026-10-06T12:10:00-04:00",
      "Sample_reason": "Routine Sampling",
      "Cyano_BOL_c1st": 66,
      "Anatoxin_A_C1st_BoL": 0,
      "Cylindrospermopsin_c1st_BOL": 0,
      "Microcystin_C1st_BOL": 0,
      "Saxitoxin_C1st_BoL": 0,
      "sample_year": 2026,
      "str_Cyanobacteria_ID_GIS_Key_ID": null,
      "Latitude": 40.80777,
      "Longitude": -77.17736,
      "Survey123ID": null,
      "GlobalID": null,
      "ID": null,
      "hour": 12,
      "mins": 10,
      "time": 1793376600000,
      "newdateobs": "06OCT2026:12:10:00",
      "hour_char": 12,
      "mins_char": "10",
      "TIME_OF_SAMPLE": "12:10",
      "Survey_date": null,
      "Sequence_Num": "239",
      "Sample_Type": "WaterSample",
      "sample_year_Char": "2026",
      "Response_Level": "No HAB issue detected",
      "dateobs": 1791259200000,
      "sample_month": "Oct",
      "Waterbody": "Moyers Mill Run",
      "ObjectId": 986
    }
  ],
  "sampling_days": [
    "2026-06-11",
    "2026-06-23",
    "2026-07-09",
    "2026-07-22",
    "2026-08-05",
    "2026-08-19",
    "2026-09-10"
  ],
  "highest_level": "Avoid Contact (Red)",
  "episode_rule": "The samples of one day count at the day's highest level; the advisory runs from the first day at Yellow or Red to the next day whose samples all read 'No HAB issue detected'.",
  "water_placement": {
    "name": "Moyers Mill Run",
    "notes": [],
    "sample_centroid": [
      -77.17736,
      40.80777
    ]
  },
  "level_note": "Response levels are the Department of Health's; its dashboard says thresholds are based on risks of illness associated with exposure while swimming, and the data are not real time (updated Wednesdays and Fridays)."
}

Source: Pennsylvania Department of Health HAB dashboard, record moyers-mill-run-20260611, updated by the source Sep 10, 2026, 11:10 AM EDT, retrieved 2026-11-02 21:20 UTC · Read the original notice

Staff names, email addresses and phone numbers are removed from source data before it is stored.