Parent Layer: No Armoring

Name: Flood Inundation by Large Storm Current

Display Field: Connection

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: These hazard zones depict flooding caused by a coastal storm. The processes considered include (1) storm surge (a rise in the ocean water level caused by waves and pressure changes during a storm), (2) wave run-up (waves running up the beach and over coastal property, calculated using the maximum historical wave conditions), (3) extreme lagoon water levels which can occur when lagoon mouths are closed and fill up during rainfall events, and (4) additional flooding caused by rising sea level in the future. These hazard zones do NOT consider upland fluvial (river) flooding and local rain/run-off drainage, which likely play a large part in coastal flooding, especially around coastal confluences where the creeks meet the ocean. There are two types of inundation areas: (1) areas that are clearly connected over the existing digital elevation through low topography, (2) and other low-lying areas that don’t have an apparent connection, as indicated by the digital elevation model, but are low-lying and flood prone from groundwater levels and any connections (culverts, underpasses) that are not captured by the digital elevation model. This difference is captured in the “Connection” attribute (either “connected” or “connectivity uncertain”) in each dataset. We recommend these be mapped as separate colors. -------------------------------This feature is one in a series of coastal flood and erosion hazard zones developed as part of the Santa Barbara County Coastal Hazard Modeling and Vulnerability Assessment. For detailed documentation about how these hazard zones were developed, please see "Santa Barbara County Coastal Hazard Modeling and Vulnerability Assessment: Technical Methods Report," a report prepared by ESA for The County of Santa Barbara in June 2015.-------------------------------The name of this shapefile reflects the future scenarios and planning horizon that the hazard zone represents, as follows:"coastal_floodhz" + _ + sea level rise scenario + planning horizon-------------------------------Sea level rise scenarios:ec – Existing conditions (2010 water level)s1 – Low sea level rise (27 cm by 2100)s2 – Medium sea level rise (78 cm by 2100)s3 – High sea level rise (153 cm by 2100)-------------------------------Planning horizons:2010 (Existing conditions)203020602100

Copyright Text: Environmental Science Associates (ESA), 2015

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Spatial Reference: 102100  (3857)

Drawing Info:

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• Value: Connected
  Label: Connected to ocean over topography
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