NFHS softball rain-out pay

[shipwreck]

I was scheduled to work a NFHS softball tourney today. We were supposed to work 3 games straight but got rained out in the fourth inning of the first game. My question is what pay do you typically get paid when you get rained out. We all turned back in our checks to the school, since they paid us for 3 games beforehand. They are trying to figure out what is fair. My partner and I travelled only 1 mile to the game. The umpires on the other field travelled about 50 miles. Any ideas? Dave