City of Oakland data set: Flood plains

Who maintains the data for this layer: Joan Curtis, OPB

Data Maintainer Phone: (510) 238-4777

Who converted the data into a GIS format: Jake Schweitzer

GIS Technician Phone: unlisted

Size of GIS layer (KB): 226

Size of export file (KB): 409

Where is the layer stored (on the k-drive): k:\gisdata\hydro\flood.e00

This GIS layer was last updated on: 2/20/97

This metadata was last updated on: 3/20/97

This layer's FGDC category description is: Hydrography

Data Set Description: This layer delineates flood plains along Oakland's waterways, showing the probable extent of flooding for given time intervals. The layer is annotated, showing 100 year (A) and 500 year (B) flood plain boundaries.

Non-standard Attributes in table:

• U_ID--Provides user with a unique identifier number for each polygon in the layer
• CLASS: Flood interval period (A=100 year flood, B=500 year flood)
• DESCRIPT: Text description of flood interval (e.g. 100 Year Flood)

Data Source History: Joan Curtis (Office of Planning and Building) supplied Jake Schweitzer, In Situ Mapping, with paper Flood Insurance maps of the City of Oakland. Jake scanned or manually captured the boundaries of the flood plains on these maps and assigned them attributes (A or B) as labeled on the source maps.

Quality Check: Joan Curtis reports that the original maps were surveyed at too small a scale to be useful beyond very general reference purposes.

Security restrictions: No security restrictions.

Update Frequency: No updates scheduled.

Update process: Update process is not yet defined

Last update: 26 September, 2007.     Copyright © 2007 Jonathan W. Lowe.     All Rights Reserved.