Description: The culvert data were originally collected in the mid-2000s by road shop crews using a Trimble GPS collector. Data are updated as new culverts are installed or existing but unmapped culverts are discovered. Descriptive information about each culvert, including size, material, condition, and association with tide gates is included in the attributes.The “House_Numb” field is used if the feature is near a known street address. “Location” is used when descriptive information about the feature’s location may be useful, as in when the feature is not easily found. “Attention_” is marked “yes” if the feature appears to need some maintenance or repair. “Remarks” is used to add any important information unique to the feature. “Name_of_Sy” is used to identify those features that are part of a named drainage system – most are not. "Outfall" indicates whether the culvert outfalls to the beach. "Tidegate" indicates whether there is some type of tidegate on the culvert. "Contact Info" refers to who is responsible for the tidegate.
Description: Plat drawings were reviewed for presence of drainage easements. Those clearly dedicated to the public include an attribute describing them as public. Others were assumed to be private and are so attributed. Computer records from project folders were also reviewed for information on drainage easements. All features were digitized by hand and are estimates of the position of the easement. Easement features were then intersected with the current parcel data to assign parcel numbers to each easement. This layer was then joined with the plat layer to assign a plat to easements within plats. It is recommended that this information be used as a guide to futher research into the exact location and purpose of individual easements.