Category Archives: Alum application trial

Study Finds Aluminum Sulfate (Alum) Applications to Control Eutrophication of Lakes May Have Unintended and Untargeted Effects on Ecological Processes

Aluminum sulfate (alum) has been applied to hundreds of eutrophic (nutrient rich) lakes and storm water detention ponds worldwide for over 40 years in a popular remediation practice to control harmful algal blooms by removing excess phosphorous.  The City of … Continue reading

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Using Restoration to Create Resilient Systems

Right now there is an important role for restoration ecologists and restoration planners to play on the teams of experts, engineers, and officials that are charting a vision for the future of the Lake Wingra Watershed.  Restoration ecologists need to … Continue reading

Posted in Alum application trial, Ecological restoration, Lake Wingra Watershed, Phosphorus in storm water, Restoration ecology, Restoration in Madison Wisconsin | Tagged , , , , | Leave a comment

Madison Engineering Division Considering Additional Sites for Aluminum Sulfate Application

Watershed planners are recommending that either the Odana Golf Course Pond or the Secret Pond storm water pond in the UW-Madison Arboretum be considered as potential sites for the addition of alum to capture phosphorous in storm water runoff.  This … Continue reading

Posted in Alum application trial, City of Madison Engineering Division, Friends of Lake Wingra, Lake Wingra, Lake Wingra Watershed, Lake Wingra Watershed management plan, Lake Wingra Watershed management planning, Madison/Nakoma Road storm water pond, Marion Dunn Pond, Phosphorus, Phosphorus in storm water | Tagged , , , , , , , , , , , , | 4 Comments

Rainy Morning Scenes Around the Watershed

Posted in Alum application trial, City of Madison Engineering Division, Human impacts on restorations, Lake Wingra, Lake Wingra Watershed, Marion Dunn Pond, Monroe Street construction projects, Storm water, Wingra Park | Tagged , , , , , , | Leave a comment

Update on Alum Application to Arboretum’s Marion Dunn Pond

As you recall this blog has reported on the proposal from City of Madison Engineering Division to add aluminum sulfate (alum) to the Arboretum’s Marion Dunn storm water pond on Monroe Street.   Now, we have learned that the City has … Continue reading

Posted in Alum application trial, Lake Wingra Watershed management planning, Marion Dunn Pond, Soil destruction, Soil erosion, Soil loss, Storm water | Tagged , , , , , , , | 2 Comments

An Alternate (Global) View of Phosphorus (P)

Limited Global Supply Spurs Research to Conserve and Reuse Vital Nutrient While Some Seek To Bury (P) In Pond Bottoms Others Strive to Salvage It. Without phosphorus there would be no life.  It is critical from the cell membrane level … Continue reading

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Madison Engineer Reveals Social Experiment Intent of Alum Application

Proposal Designed to Test Public Acceptance of Treating Rainfall As If It Were Part of Sanitary Sewer System Weakened Commitment to Promote Rainfall Infiltration Signals Policy Shift The City of Madison Engineering Division has designed its alum application trial project … Continue reading

Posted in Alum application trial, Dudgeon-Monroe Neighborhood Association, Friends of Lake Wingra, Lake protection, Lake Wingra, Lake Wingra Watershed, Madison/Nakoma Road storm water pond, Marion Dunn Pond, Storm water, Stormwater best management practices | Tagged , , , , , , , , , , | 4 Comments