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Published byLeonard Chase Modified over 9 years ago
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Update on Lake Erie Nutrient and Algal Issues Gail Hesse Ohio Lake Erie Commission March 30, 2012
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August 11 2011 1330 cfs 1330 cfs Photo: NOAA Satellite Image
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October 9, 2011
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Microcystis near Marblehead October 9, 2011 Photo: Richard Kraus, United States Geological Survey
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Algal Toxins Microcystin –World Health Organization benchmark criteria 1 ppb for drinking water 1 ppb for drinking water 20 ppb for recreational contact Anatoxin-a, Saxitoxin, Cylindrospermopsin
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Public Water System Cyanotoxin No detections in finished water 2011 Source (raw) water detection in 9 PWS Systems: –Marblehead –Sandusky –Camp Patmos –Put In Bay –LE Utilities –Oregon –Toledo –Carroll Township –Ottawa County
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Recent & Current Activities Lake Erie P Task Force Phase I, Phase II State of Ohio HAB Response Strategy Lake Erie Millennium Network Directors’ Agricultural Nutrients & Water Quality Working Group Directors’ Point Source/Urban Work Group Nutrient Reduction Strategy Framework for Ohio Waters - Draft
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Key Findings NW Ohio: commercial fertilizer dominates land application More fall preparation of seed beds, more fall and winter application Changing methods: more broadcast application without incorporation Unknown and uncertain use of soil tests and adherence with recommendations Changes in drainage, weather patterns
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3 Categories of Recommendations Priority practices –Key issues: amount, timing, incorporation, management of field runoff –No single practice will result in lower nutrient runoff Tools to quantify edge of field runoff potential Research
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State of Ohio HAB Strategy Monitoring protocols and advisories Addresses: –Beach advisories –Public drinking water Under revision for 2012 www.ohioalgaeinfo.com
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Ohio State Park Beach Algae Advisory Postings No Contact Advisory Public Health Advisory Bloom Advisory Avoid all contact Avoid direct contact with water Avoid ingestion, direct contact with visible scum
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2011 Lake Erie Advisories Maumee Bay State Park: Public Health Advisory Lake Erie (Battery Park): Algal Bloom Advisory Sandusky: Algal Bloom Advisory
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Directors’ Agricultural Nutrients and Water Quality Working Group Ohio EPA, Ohio DNR and ODA Focus on voluntary actions: 4Rs –Right fertilizer, Right rate, Right time, Right placement Coordinate funding, research –Focus: edge of field, tile management Develop/expand authorities –Habitual bad actors –Nutrient Management Plans
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P Task Force Phase II Build on lessons learned from Phase I Incorporate findings of current research –Millennium Synthesis Team Funded by Ohio Lake Erie Commission and GLNPO Report: 14 June 2011 Focus on: –Management actions –Recommendations from Directors’ Working Group –Reduction goal/target
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Lake Erie Protection Fund Available on the web at: www.oplates.com
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www.ohioalgaeinfo.com Ohio Phosphorus Task Force Report: www.epa.ohio.gov/dsw/lakeerie/ptaskforce Directors’ Ag Nutrients & WQ Working Group Report: dnr.ohio.gov/portals/12/docs/waterqualityreport.pdf
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