Hazardous Algal Blooms (HABs) In Ohio's Ponds And Small Lakes.pdf

## Hazardous Algal Blooms (HABs) in Ohio's Ponds and Small Lakes: A Growing Concern

Key Takeaways:

Increase in HABs: There has been a dramatic rise in harmful algal blooms (HABs), particularly in Ohio's ponds and small lakes, since 2007.
Causes: Elevated nutrient levels, especially phosphorus, protected water with little movement, and low water levels are primary contributors to HAB formation. High temperatures used to be considered a factor but are not as significant this past summer.
Types of Algae: Microcystis is the dominant cyanobacteria (blue-green algae) species causing current HABs in Ohio.
Health Risks: These blooms can produce toxins that pose health hazards to humans and animals if water contact occurs. Symptoms range from skin rashes and gastrointestinal upset to neurological issues and organ damage.
Prevention & Management:

Limit fertilizer use and prevent surface runoff from agricultural areas.
Control nuisance aquatic plants in early summer.
Install bottom aeration systems to reduce nutrient cycling.
Keep Canada geese away from water bodies.
Regularly inspect ponds and lakes for initial signs of HABs.
Safety Measures:

Avoid contact with discolored water, especially green scum or slicks.
Rinse thoroughly after swimming in natural waters.
Cook with bottled water if concerned about HAB toxins.
Do not drink pond or lake water.

Additional Information:

Ohio EPA: [Link to HAB information for Ohio Lakes](http://www.epa.ohio.gov/dsw/inland_lakes/index.aspx)
NOAA Great Lakes HAB webpage: [Link](http://www.glerl.noaa.gov/res/Centers/HABS/habs.html)
CDC Harmful Algal Blooms information: [Link](http://www.cdc.gov/hab/cyanobacteria/facts.htm)