Dakotah! Ice Center was constructed in 2008 for the Shakopee Mdewakanton Sioux Community (SMSC). This building was an expansion to the existing Dakotah! Sport and Fitness facilities and was designed with green initiatives. The building is home to the Prior Lake High School girls and boys high school hockey teams, as well as the Prior Lake/Savage Youth Hockey Association,
The 72,000-square-foot arena houses an NHL-sized sheet of ice and can seat 1,200 people. The addition included several energy efficient designs and green infrastructure components. The building’s energy-efficient design includes skylights coupled with daylight harvesting sensors, 16 solar panels that provide energy for the ice resurfacing equipment, a heated flooring system that uses only waste heat from other mechanical systems, and seating benches made from recycled lumber.
The green infrastructure on the site is also comprehensive. A permeable pavement system constructed of recycled materials and a rain garden help manage and treat stormwater runoff. Of particular note, however, is the 33,000-square-foot green roof on top of the arena.
The green roof is semi-intensive and incorporates grasses, prairie plants, and succulents. In total, more than 50,000 plants make up the green roof. It was among the largest in the Midwest at the time of construction.
After construction, the Shakopee Mdewakanton Sioux Community Land and Natural Resources Department conducted a four-year intensive monitoring study that evaluated the green roof’s ability to retain stormwater. Rainfall, irrigation, and bypass drainage volumes, along with soil moisture and evapotranspiration were measured and recorded at regular intervals. Throughout the study, all precipitation events less than 0.25 inches were retained by the roof with no drainage from the system, while about half of the events between 0.25 inches and 0.50 inches in size were completely retained by the green roof.
The study found that soil moisture greatly impacted the green roof’s ability to retain precipitation, as media that is already saturated cannot retain additional water. Conversely, the green roof performed best when soil moistures were very low. Under these conditions, storms of up to 1 inch could be completely retained.
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Documented Maintenance Practices:
Is the Site Publicly Accessible: Yes
Special Design Features:
Other Benefits: 16 solar panels are installed on the roof of the Dakotah! Ice Center.