Fish Lake Coverage Map

HAB has downloaded and and processed the alum application data from the barge’s guidance and dose control computer system.  The coverage map shows each individual application path that was recorded over the course of the application.  We are extremely pleased with the precise application and uniform coverage of the application zones.  There are no significant…

Alum Floc Video

This underwater video was taken after HAB’s Green Lake Alum Application Project was completed in Seattle, WA. It does a great job of showing how white alum floc quickly settles to evenly cover the lakebed after an application! Alum floc in water lillies from HAB Aquatic Solutions on Vimeo.  

Project Completion

Today the Fish Lake alum application project was completed ahead of schedule! As planned, the exact dose of over 95,000 gallons of alum applied in a precise, uniform, and most importantly… safe manner. There is no greater measure of success than safety and Fish marks HAB’s 64th project without a safety incident. A special thanks…

Demonstration Day

HAB had another productive day and applied 29,000 gallons of alum to the lake.  HAB’s application equipment is well-suited for the precision required for the Fish Lake restoration project.  Any gaps in coverage would allow for phosphorus from untreated lakebed sediments to leach into the overlying water column and stimulate future algal blooms.  An onboard…

Alum Floc

HAB had a productive day today at Fish Lake! 30,000 gallons of alum were applied to bring the total to date to 50,000 gallons.  The project plan calls for a total application of 95,000 gallons. The key to a successful alum application is the formation of the floc and the precise placement of the floc…

Mobilization Day

HAB spent the first day of the project preparing equipment for the application.  This included assembly of the barge’s application boom, programing the barge’s computerized dosing system, launching the barge into the lake, setting up on-shore storage tanks and confirming the delivery plan for the alum.  The application of the alum then began immediately after…

Fish Lake Project Description

Fish Lake is a 232-acre recreational lake in Maple Grove, MN with a maximum depth of 61 feet.  The lake is eutrophic with summer algae blooms that can result in odors and unsightly build-up of algae along the shorelines. It is the concentration of phosphorus which controls the level of algae growth.  Lake water column phosphorus…