A problem with storm water drainage in the Towles Avenue and Calvin Street area behind Bobby Ray Elementary may not have a simple solution.“We thought we had fixed the problem with some ditch work behind the school last year, but I guess not,” said McMinnville Public Works assistant director Brad Hennessee. Last year, the city dug behind the school trying to clear away debris that had accumulated, preventing the water from moving from the school’s property to Calvin Street where it could enter a drain.“We had permission from the school to do it,” said Hennessee. “Being on school property, that is still private property.