Dubuque held a 17-2 advantage in total shots throughout the first half before things evened out a bit more in the second half as the Beavers held the Spartans to only seven.
Sophomore Kendall Bickford had a pair of shots on-goal for Buena Vista with Charlie Adams adding one.
Brandon Kaup had a match-high seven total shots (four on-goal) to help lead the Spartans (7-7-2, 4-2-1 A-R-C).
Buena Vista drops to 1-13-3, 0-7 A-R-C) and will travel to Wartburg College on Tuesday, Oct. 24, for a 5 p.m. kickoff with the Knights.