(Harlan) The Iowa Department of Natural Resources is moving forward with plans to redesign the main boat ramp at Prairie Rose State Park. Fisheries biologist John Lorenzen says the steep drop at the ramp has long created hazards, often causing boats or vehicles without adequate clearance to bottom out.
Lorenzen says the steep drop causes a bottoming-out hazard to boat tongues and vehicles if they do not have the truck-type clearance.
In addition to the ramp project, the second phase of an alum treatment at Prairie Rose is scheduled for October 13–17.
The same contractor will also conduct a treatment at Green Valley Lake during that time. Lorenzen says, like Prairie Rose, Green Valley Lake could not handle the complete treatment in a single application.
Alum is commonly used as a water purifier, acting as a coagulant to remove impurities. It also has applications in the food industry, including pickling and maintaining crispness.








