FEMA Zone D Determination for New Elementary School

Gilroy Unified School District planned a new elementary school, but the site was mapped in Zone D on a FEMA Flood Insurance Rate Map—that is, in an area of possible but undetermined flood hazards. Title 5 of the California Code of Regulations prohibits building a school in an area of dam inundation or flood unless the cost of mitigating is reasonable. Therefore, the California Department of Education and the city asked the district to further investigate the flood hazard at the school site as a condition of site approval. PlaceWorks performed the analysis according to Title 5 requirements and determined that the site will not be subject to flooding from the creek to the north.