Legend (CWA_AEC/GreatLakesNearshoreStress)

Fish Consumption: Average Meals per Month (1) 8 or more meals per month 1 to 7 meals per month Beach Postings: Percent of Days Beach Posted as Unsafe for Swimming (2) Less than 5% of the time 5 to 20% of the time More than 20% of the time Treated Drinking Water: Number of Adverse Water Quality Incidents (3) 0 N/A Benthic Community: Quality (5) No Data High Quality Moderate Quality Low Quality Water Quality: Exceedances in Provincial/Federal Guidelines (6) 1 Exceedance No Exceedances Sediment Quality: Exceedances in Provincial/Federal Guidelines (7) Contaminants not at levels of concern PCBs > No Effect Level PCBs > No Effect Level; Organochlorine Pesticides > Probable Effect Level PCBs > No Effect Level; PAH > Probable Effect Level Metals > Probable Effect Level; PAHs > Lowest Effect Level Metals > Severe Effect Level Littoral Barriers: Shore perpendicular structures (9) Littoral Barriers Coastal Processes: Shoreline Type (10) Hardened Natural Coastal Processes: Tributary Connectivity (11) Low Stress (>75%) Moderate Stress (25-75%) High Stress (<25%) Dissolved Oxygen: Observed Concentrations (Lake Erie only) (13) Sample is greater than 6 mg/L Sample is between 2 and 6 mg/L Cyanobacteria: Presence of Blooms (14) No bloom Bloom No data Cladophora: Extent of Nuisance Algae (15) Less than 20.00% coverage 20.01% to 35.00% coverage 35.01% coverage Great Lakes Nearshore Cumulative Stress (16) VERY LOW STRESS LOW STRESS MODERATE STRESS HIGH STRESS Great Lakes Nearshore Waters - Areas with High Ecological Value (17) Areas with High Ecological Value