Introduction. 3

Hazardous Algae Blooms (HABs) Beach Alerts. 3

1. Southern Lake Erie Watersheds 4

1a Grand River Watershed (0) 4

1b Ashtabula River - Chagrin River Watershed (2) 4

Lake Erie – Villa Angela State Park (Cuyahoga County) 4

Lake Erie – Euclid State Park (Cuyahoga County) 4

1c Cuyahoga River Watershed (1) 5

Lake Erie – Edgewater State Park (Cuyahoga County) 5

1d Black River - Rocky River Watershed (0) 5

2   Western Lake Erie Watersheds 5

2a Huron River/Vermillion River (0) 5

2b Sandusky River Watershed (0) 6

2c Blanchard River Watershed (0) 6

2d Cedar River-Portage River Watershed (1) 6

Lake Erie – Camp Perry (Ottawa County) 6

2e Auglaize River Watershed (0 active) 6

2f - Lower Maumee River Watershed (0) 6

2g Upper Wabash River Watershed (0) 7

2h St. Mary’s River Watershed (4) 7

Grand Lake – St. Marys Camp (Auglaize County) 7

Grand Lake – Windy Point (Auglaize County) 7

Grand Lake – St. Marys Main East (Auglaize County) 8

Grand Lake – St. Marys Main West (Auglaize County) 8

2i Upper Maumee River Watershed (0) 9

2j Tiffin River (0) 9

2k St. Joseph River (0) 9

3 Ohio River Tributaries. 9

3a Shenango River Watershed (0) 9

3b Mahoning River (0) 9

3c Little Beaver Watershed (0) 9

3d Wheeling Creek Watershed (0) 9

3e Shade River Watershed (0) 10

3f  Hocking River Watershed (0) 10

3g Raccoon Creek – Symmes Creek Watershed (0) 10

3h White Oak Watershed (0) 10

3i Laughery Watershed (0) 10

 4 Muskingum River Watersheds. 10

4a Tuscarawas River Watershed (0) 10

4b Wills Creek Watershed (0) 10

4c Little Muskingum River Watershed (0) 10

4d Mohican River Watershed (0) 11

4e Walhonding River Watershed (0) 11

4f Licking River Watershed (0) 11

4g Muskingum River Watershed (0) 11

5 Scioto River Watersheds. 11

5a Upper Scioto Watershed (0) 11

5b Paint Creek Watershed (1) 11

Paint Creek (Ross County) 11

5c Lower Scioto Watershed (1) 12

Jackson Lake (Jackson County) 12

5d Little Scioto Watershed (0) 12

6 Miami River Watersheds. 12

6a Upper Great Miami Watershed (0) 12

6b Lower Great Miami Watersheds (0) 13

6c Little Miami Watershed (0) 13

Introduction

Hazardous Algae Blooms (HABs) Beach Alerts

Hazardous Algae Bloom is the common term for cyanobacteria. HABs present in different forms, from what appears as grass clippings to spilled paint, growing in lakes and ponds, increasingly common as the water temperature increases and nutrients are in excess.  

HABs are capable of producing toxins dangerous to humans and pets.  The toxins can be present in the water when the bloom itself is no longer visible; samples tested for the presence of toxins may lead to public health advisory or beaches being posted with warnings.  Avoid contact with HABs and watch for recreational public health advisories posted when toxins exceed safe levels.

Thresholds for cyanobacteria toxins in recreational water in Ohio:

Bacterial Contamination Alerts - High levels of e.coli are associated with intestinal illness.  Ohio Department of Natural Resources, County Health monitor e.coli contamination on public beaches, posting alerts when the levels are above the safe threshold.  While the advisory is posted, the beach remains open, however, the public is advised to stay out of the water.

Alerts from the BeachGuard site are reported here in the watershed area, listing the  water body impacted, including bacterial contamination and algal toxin sample test results and location details.  If you see a bloom, fill out the report on Ohio EPA https://survey123.arcgis.com/share/ac459f1f0b344bfa93c0486b028fbba6

email reports to HABmailbox@epa.ohio.gov

1. Southern Lake Erie Watersheds

1a Grand River Watershed (0)

Draining northeast Ohio north to Lake Erie, including parts of Ashtabula, Lake, Geauga, Portage, Trumbull Counties

1b Ashtabula River - Chagrin River Watershed (2)

Draining northeast Ohio, including parts of Ashtabula, Lake, Cuyahoga, Geauga, Portage Counties north into Lake Erie.

Lake Erie – Villa Angela State Park (Cuyahoga County)

Bacterial Contamination Advisory issued Sep 22, 9 am ongoing 6 days

for predictive modeling

Monitoring by Northeast Ohio Regional Sewer District 7 times per week

Daily Water Quality Sampling with Virtual Beach Model Predictions for E. coli and YSI Total Algae Sensor readings for Harmful Algal Blooms.

Sampling test results:

• Sep 27 E.coli 9804 cfu/100ml (Colilert-18 hr, IDEXX)
• Sep 26 E.coli 548 cfu/100ml (Colilert-18 hr, IDEXX)
• Sep 22 E.coli 345 cfu/100ml (Colilert-18 hr, IDEXX)
• Sep 21 E.coli 78 cfu/100ml (Colilert-18 hr, IDEXX)
• Sep 20 E.coli 545 cfu/100ml (Colilert-18 hr, IDEXX)

Location: 41.585098/-81.567703

Lake Erie – Euclid State Park (Cuyahoga County)

Bacterial Contamination Advisory issued Sep 22, 9 am ongoing

7 days, based on predictive modeling

Monitoring by Northeast Ohio Regional Sewer District 7 times per week

Daily Water Quality Sampling with Virtual Beach Model Predictions for E. coli and YSI Total Algae Sensor readings for Harmful Algal Blooms.

Sampling test results:

• Sep 28 E.coli 921 cfu/100ml (Colilert-18 hr, IDEXX)
• Sep 27 E.coli 15531 cfu/100ml (Colilert-18 hr, IDEXX)
• Sep 26 E.coli 649 cfu/100ml (Colilert-18 hr, IDEXX)
• Sep 22 E.coli 249 cfu/100ml (Colilert-18 hr, IDEXX)
• Sep 21 E.coli 23 cfu/100ml (Colilert-18 hr, IDEXX)

Location: 41.584301/-81.568604

1c Cuyahoga River Watershed (1)

Draining a portion of northeast Ohio including parts of Cuyahoga, Summit, Portage, Geauga, Medina Counties out to Lake Erie.

Lake Erie – Edgewater State Park (Cuyahoga County)

Bacterial Contamination Advisory issued Sep 22, 9 am ongoing

7 days based on predictive modeling

Monitoring by Northeast Ohio Regional Sewer District 7 times per week

Daily Water Quality Sampling with Virtual Beach Model Predictions for E. coli and YSI Total Algae Sensor readings for Harmful Algal Blooms.

Sampling test results:

• Sep 28 E.coli 1414 cfu/100ml (Colilert-18 hr, IDEXX)
• Sep 27 E.coli 2420 cfu/100ml (Colilert-18 hr, IDEXX)
• Sep 26 E.coli 345 cfu/100ml (Colilert-18 hr, IDEXX)
• Sep 22 E.coli 687 cfu/100ml (Colilert-18 hr, IDEXX)
• Sep 21 E.coli 19 cfu/100ml (Colilert-18 hr, IDEXX)

Location: 41.4893/-81.739197

1d Black River - Rocky River Watershed (0)

Draining part of north central Ohio, including parts of Lorain, Ashland, Huron, Cuyahoga, Medina Counties to Lake Erie.

2   Western Lake Erie Watersheds

2a Huron River/Vermillion River (0)

Draining parts of north central Ohio, including parts of Erie, Huron, and Lorain Counties north to Lake Erie.

2b Sandusky River Watershed (0)

Flows: parts of Sandusky, Seneca, Wyandot, Crawford (4 Main) also parts of Erie, Ottawa, Wood, Huron, Hancock, Hardin, Marion, and Richland counties

2c Blanchard River Watershed (0)

Draining parts of Hardin, Hancock, Putnam, Seneca, Allen, and Wyandot Counties north of the divide/height to Lake Erie.

2d Cedar River-Portage River Watershed (1)

Draining parts of Hancock, Wood, Seneca, Sandusky, Ottawa Counties to Lake Erie.

Lake Erie – Camp Perry (Ottawa County)

Bacterial Contamination Advisory issued Aug 31, 8 am ongoing

29 days for high bacteria level

Monitoring by Ottawa County Community Health 1 time per week

Sampling test results: (no updated test results posted since Sept 1)

• Sep 1 E-coli 1 cfu/100ml (Colilert-18 hr, 2000 IDEXX)
• Aug 31 E-coli 6 cfu/100ml (Colilert-18 hr, 2000 IDEXX)
• Aug 30 E.coli 272.3 cfu/100ml (Colilert-18 hr, 2000 IDEXX)
• Aug 29 E-coli 2 cfu/100ml (Colilert-18 hr, 2000 IDEXX)
• Aug 25 E.coli 4 cfu/100ml (Colilert-18 hr, 2000 IDEXX)

Location: 41.547314/-83.013733

2e Auglaize River Watershed (0 active)

Draining an area of northwest Ohio including parts of Defiance, Fulton, Henry, Lucas, Paulding, Williams, Wood and Allen Counties to Lake Erie.

2f - Lower Maumee River Watershed (0)

Drainage an area of northwest Ohio, including parts of Defiance, Fulton, Henry, Lucas, Paulding, Williams, and Wood Counties to Lake Erie.

2g Upper Wabash River Watershed (0)

Draining an area of northwest Ohio, including parts of Mercer, Darke Counties west to Indiana.  The flows eventually reach Lake Erie.

2h St. Mary’s River Watershed (4)

Draining a portion of northwest Ohio west to Indiana, including parts of Mercer, Van Wert, and Auglaize, eventually reaching Lake Erie.

Grand Lake – St. Marys Camp (Auglaize County)

Recreational Public Health Advisory issued Aug 17, 5:02 am for Algal bloom/Toxin, 43 days as of Sep 29

Monitoring: Hazardous algae blooms Ohio Department of Natural Resources, as needed

Sampling test results: (no updates since Aug 28)

• Aug 28 microcystin 9 µS/l  (ADDA -ELISA)
• Aug 21 microcystin 8 µS/l  (ADDA -ELISA)
• Aug 14 microcystin 19 µS/l  (ADDA -ELISA)
• Jul 20 microcystin 4 µS/l  (ADDA -ELISA)

Location: 40.544998/-84.440422

Grand Lake – Windy Point (Auglaize County)

Recreational Public Health Advisory issued Aug 17, 5:05 am for Algal bloom/Toxin, ongoing 43 days as of Sep 29

Monitoring: Hazardous algae blooms Ohio Department of Natural Resources, as needed

Sampling test results: (no updates since Aug 28)

• Aug 28 microcystin 1 µS/l  (ADDA -ELISA)
• Aug 21 microcystin 9 µS/l  (ADDA -ELISA)
• Aug 14 microcystin 4 µS/l  (ADDA -ELISA)
• Jul 20 microcystin 1 µS/l  (ADDA -ELISA)

Location: 40.50946/-84.541168

Grand Lake – St. Marys Main East (Auglaize County)

Recreational Public Health Advisory issued Aug 17, 5:03 am ongoing 43 days for Algal bloom/Toxin

Monitoring: Hazardous algae blooms Ohio Department of Natural Resources, as needed

Sampling test results: (no new results posted since Aug 28)

• Aug 28 microcystin 25 µS/l  (ADDA -ELISA)
• Aug 21 microcystin 7 µS/l  (ADDA -ELISA)
• Aug 14 microcystin 7 µS/l  (ADDA -ELISA)
• Jul 20 microcystin 6 µS/l  (ADDA -ELISA)

Sampling test results: (no new results posted since Sept 2)

• Sep 2 E.coli 17.1 cfu/100ml (method not specified)
• Aug 29 E.coli 4 cfu/100ml (method not specified)
• Aug 28 E.coli 488.4 cfu/100ml (method not specified)
• Aug 14 E-coli 410.6 cfu/100ml (method not specified)

Location: 40.541672/-84.421951

Grand Lake – St. Marys Main West (Auglaize County)

Bacterial Contamination Advisory issued Aug 16, 8:22 am ongoing

44 days for high bacteria level, as of Sept 29, 2022

Monitoring by Ohio DNR once every two weeks

Sampling test results: (no new results posted this week)

• Aug 28 E.coli 25.5 cfu/100ml (method not specified)
• Aug 14 E-coli 410.6 cfu/100ml (method not specified)
• Jul 31 coli  7.4 cfu/100ml (method not specified)

Sampling test results for algal toxin: (no new results posted this week)

• Aug 28 microcystin 7 µS/l  (ADDA -ELISA)
• Aug 21 microcystin .3 µS/l  (ADDA -ELISA)
• Aug 14 microcystin 9 µS/l  (ADDA -ELISA)
• Jul 20 microcystin 3 µS/l  (ADDA -ELISA)

Location: 40.542671/-84.426231

2i Upper Maumee River Watershed (0)

Draining parts of Paulding and Defiance Counties in a northeast flow direction to Lake Erie.  Reporting the Lower Maumee section separately under the heading 2f

2j Tiffin River (0)

Draining northwest Ohio, parts of Williams, Defiance Counties, flowing southwest into Indiana, looping back north to Lake Erie in Indiana.

2k St. Joseph River (0)

Draining a small corner of northwest Ohio, parts of Williams, Defiance, and Lucas counties, southwest direction into Indiana.

3 Ohio River Tributaries

3a Shenango River Watershed (0)

Draining a portion of northeast Ohio including parts of Ashtabula, Trumbull, and Mahoning Counties, flows generally east into Pennsylvania, turning south and eventually joining the Ohio River on the Penn side.  Note the Shenango River itself does not flow in Ohio state.

3b Mahoning River (0)

Draining parts of Stark, Mahoning, and Trumbull counties, the Mahoning River draws in the run-off from a large area, flow starts in the south part of the basin, flows north and turns east at Youngstown, exits Ohio, picks up flow from Penn state before joining the Ohio River.

3c Little Beaver Watershed (0)

Draining parts of Jefferson, Carroll, Columbiana, and Harrison Counties to the Ohio River.

3d Wheeling Creek Watershed (0)

Draining parts of Belmont, and Monroe Counties to the Ohio River.

3e Shade River Watershed (0)

Draining parts of Meigs County to the Ohio River.

3f  Hocking River Watershed (0)

Draining a large section of south central Ohio, including parts of Athens, Hocking, and Fairfield Counties to the Ohio River.

3g Raccoon Creek – Symmes Creek Watershed (0)

Draining parts of Hocking, Athens, Meigs, Vinton, Jackson, Gallia Counties

3h White Oak Watershed (0)

Draining a portion of southern Ohio, parts of Brown County to the Ohio River.

3i Laughery Watershed (0)

Draining central Butler and Hamilton Counties, including Cincinnati, to the Ohio River.

 4 Muskingum River Watersheds

4a Tuscarawas River Watershed (0)

Draining a large area of east-central interior Ohio generally south, including parts of Tuscarawas, Stark, Wayne, Carroll, and Harrison Counties

4b Wills Creek Watershed (0)

Draining parts of Licking, Guernsey, and Tuscarawas Counties.  Starting at the southeast corner of the basin, Wills Creek flows north and westward, catching up with the Muskingum River system.

4c Little Muskingum River Watershed (0)

Draining parts of Washington, Noble, Monroe, and Guernsey southeast to meet the Ohio River.

4d Mohican River Watershed (0)

Draining parts of Richland and Ashland Counties, gathering run-off in a southeast flow direction, joining the Muskingum River.

4e Walhonding River Watershed (0)

Draining parts of Knox, Morrow, Ashland, Richland, Coshocton, and Holmes Counties, gathering run-off from a strip of north interior state and a strip in the centre of the state, draining these areas together and into the Muskingum system.

4f Licking River Watershed (0)

Gathering run-off from parts of Licking County flowing east to the Muskingum channel.

4g Muskingum River Watershed (0)

Having gathered the flows of the subregions listed above, the Muskingum River continues to clear run-off from parts of Morgan, Washington, Noble, Muskingum, and Coshocton Counties south to the Ohio River.

5 Scioto River Watersheds

5a Upper Scioto Watershed (0)

Draining parts of Madison, Union, Franklin, Pickaway, Champaign, Logan, Marion, Delaware, Morrow, Crawford, Licking, Knox, Fairfield Counties

5b Paint Creek Watershed (1)

Draining parts of Clinton, Ross and Highland Counties

Paint Creek (Ross County)

Bacterial Contamination Advisory issued Sep 2, 11:16 am ongoing 27 days as of Sep 29 for high bacteria level

Monitoring by Ohio DNR once every two weeks

Sampling test results: (no updates to report as of Sep 24)

• Aug 30 E.coli 2100 cfu/100ml (Coliform/E. coli Enzyme substrate test; ONPG-MUG test)
• Aug 16 E-coli 0 cfu/100ml (Coliform/E. coli Enzyme substrate test; ONPG-MUG test)

Location: 39.239109/-83.371109

5c Lower Scioto Watershed (1)

Draining parts of Madison, Highland, Franklin, Pickaway, Ross and Pike counties

Jackson Lake (Jackson County)

Bacterial Contamination Advisory issued Sep 2, 11:10 am ongoing 27 days as of Sep 29 for high bacteria level

Monitoring by Ohio DNR once every two weeks

Sampling test results: (no updates to report as of Sep 24)

• Aug 31 E.coli 717 cfu/100ml (Coliform/E. coli Enzyme substrate test; ONPG-MUG test)
• Aug 17 E.coli 10 cfu/100ml (Coliform/E. coli Enzyme substrate test; ONPG-MUG test)

Location: 38.901829/-82.5942

5d Little Scioto Watershed (0)

Draining the south-most part of Ohio state to the Ohio River.

6 Miami River Watersheds

6a Upper Great Miami Watershed (0)

Draining a large area in the northwest interior of Ohio, including parts of Hardin, Logan, Shelby, Miami, Darke, Clark and Montgomery Counties. After Dayton, we refer to the Lower Great Miami River, continuing south to the Ohio River.

6b Lower Great Miami Watersheds (0)

Draining a large area of interior southwest Ohio, including Hamilton, Montgomery, Preble and Butler Counties to the Ohio River.

6c Little Miami Watershed (0)

Draining an area of south interior Ohio east of the Great Miami channel, to flow south and west to meet the Lower Great Miami River and on to the Ohio River, draining parts of Clark, Clermont, Warren and Greene Counties.