Description: Line representing the centerline of all channels, ditches, swales, streams, and rivers within the storm water system. channels will be drawn from a combination of aerial photography and georeferenced engineering plans and assigned attribute information from the respective plans. Field Crews then collected coordinates, verified or corrected plan attribute information, and additional information for each channel based on a survey procedures manual.
Description: Preliminary data are for review and guidance purposes only. By viewing preliminary data and maps, the user acknowledges that the information provided is preliminary and subject to change. Preliminary data, including new or revised FIRMs, FIS reports, and FIRM Databases, are not final and are presented on the MSC as the best information available at this time. Additionally, preliminary data cannot be used to rate flood insurance policies or enforce the Federal mandatory purchase requirement. FEMA will remove preliminary data once effective data are available.
Description: - This layer is a subset of the floodplain_cfw_studies layer. The layer represent 100 year fully developed floodplain or inundation for a number of streams and neighborhoods studied by the Stormwater Division. - These floodplains or inundation areas are not subject to floodplain management ordinance regulation yet, but some areas might be submitted to FEMA and subject to regulation in the future. - These floodplains were determined by various consultants. Not all of these floodplains have been finalized. Some of them are preliminary and subject to change since these studies are still ongoing. The current layer dates from early 2015 and will be updated from time to time. For questions please contact Clair Davis; Floodplain Manager.