Reducing Algal Blooms at Barr Lake

Your Water Colorado Blog

unnamedBy Amy Conklin, the Barr Lake and Milton Reservoir Watershed Association

Have you ever taken a picnic or gone for a hike at one our local lakes only to find it a green, stinky mess because of all the algae?  Did you think, ‘Why doesn’t someone do something about this?’  Well, they are.

Since 2002, the Barr Lake and Milton Reservoir Watershed Association (BMW) has been working to identify what causes the stinky algal blooms and find ways to prevent them.

What BMW found is that excessive nutrients coming from human activities are feeding the algae and creating the excessive blooms.  This process is called cultural eutrophication.  It means that the products of urban living, stormwater, wastewater and other runoff, act like fertilizer on a lawn and turn Barr Lake green.

At Barr Lake, one result of all the algal blooms is high pH (an alkaline condition) and low dissolved…

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