In the earlier game, nine different Cougars scored for the second straight game, led by Ari James' eight and Amanda O'Ferrell's seven.
Spanish Springs used a 17-6 run to extend its 21-16 halftime lead to a 38-22 margin.
The Cougars held Durango to no more than nine points in a quarter thanks to 30 forced turnovers. The Purple and Teal also made 20 of 36 shots from the field.
In the late game, Spanish Springs enjoyed a 25-18 cushion at halftime only to see Coronado take a 29-28 advantage with two minutes to go in the third.
The Cougars scored the next bucket and never trailed again.
However, Coronado was able to tie the game at 43-43 with 1:10 on the game clock.
Freshman Riley Holladay knocked down Spanish Springs' lone 3-pointer of the game, making it 46-43 with 53 seconds to go and Coronado could not muster up any more offense.
Kaylie Humphreys paced the Cougs with 15 points and eight rebounds, while James added nine points and nine boards. The local school won the battle on the glass by a 40-24 rebounding margin.
Spanish Springs (3-1) looks to make it a 4-for-4 sweep in Vegas when it takes on Sierra Vista today at 1:30 p.m.