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M �IL M lk'�,V,485 0 kkA LTA DI kka Din <br />SECURED FiTNDING 2023* PROPOSED MODIFICATIONS: <br />$500,000 <br />Feasibility Study related to adding a lock or <br />means for boats to traverse the dam, a means to <br />generate hydroelectric power; and reconstruction <br />of dam in a means to facilitate river surfing at the <br />dam site. <br />Design, engineering, and environmental analysis <br />$11-95 million <br />• Operation &Safety Improvements <br />• Hydroelectric Power Generation <br />• River Surfing <br />• Lock or Boat Portage System <br />• Fish Passage <br />• Enhanced Environmental Benefits <br />OPERATION AND SAFETY IMPROVEMENTS: <br />Flashboard installation and removal requires manual manipulation and places city staff in a hazardous situation <br />biannually. The river's water level must be low enough to bypass the deck of the dam when the tainter gate is opened. <br />Spring installation is dependent on flooding, which can delay installation into the summer months. Board removal in <br />the fall can be treacherous due to harsh temperatures. Conversion to an automated crest gate system would eliminate <br />the need for crews to traverse the dam and would allow for predictive water level management to reduce spring <br />flooding, upstream riverbank erosion, impacts to infrastructure and damage to aquatic habitat. The maintenance <br />platform would allow for year-round removal of trees and debris that collects on the upstream side of the crest gates. <br />HYDROELECTRIC POWER GENERATION: <br />Hydroelectric power is not a new concept for the Anoka Rum <br />River Dam, although the technology is new. In the 188o's, the dam <br />included four turbines on the east bank of the river that powered the <br />Lincoln Flour Mill and several other businesses along the riverfront <br />(pictured on the right). The historic dam produced approximately <br />54okW of power with unrestricted flows. <br />Modern technology indicates that a hydroelectric power plant could <br />produce enough electricity to power the utilities along the riverfront <br />and four buildings the size of Anoka City Hall without creating <br />adverse environmental impacts. The Anoka project would benefit <br />local residents by reducing the peak electric use across the entire <br />grid system. In addition, the incorporation of hydroelectric power <br />generation aligns well with Minnesota's ultimate goal of producing <br />too % of its electricity from green energy sources by the year 2040. <br />AREAL. CLASSIC. <br />City of Anoka, 2015 First Ave., Anoka MN <br />Greg Lee, City Manager, 763-576-2711 <br />