Service Description: This polygon dataset of flooded inundation area was created to support the development of flood inundation maps for the Federal Emergency Management Agency's (FEMA) response and recovery operations following an October 1-5, 2015 flood event along the

Service ItemId: 6fa7fa3d009e4f9eaebc4fb32310f354

Has Versioned Data: false

Max Record Count: 1000

Supported query Formats: JSON

Supports applyEdits with GlobalIds: False

Supports Shared Templates: True

All Layers and Tables

Layers:

• Stoop_Creek_Columbia_inundated (0)
• Stoop_Creek_Columbia_boundary (1)
• Smith_Branch_Columbia_inundated (2)
• Smith_Branch_Columbia_boundary (3)
• Saluda_Broad_Congaree_Rivers_Columbia_inundated (4)
• Saluda_Broad_Congaree_Rivers_Columbia_boundary (5)
• Rocky_Branch_Columbia_boundary (6)
• Rocky_Branch_Columbia_inundated (7)
• Rawls_Creek_Columbia_boundary (8)
• Rawls_Creek_Columbia_inundated (9)
• Pocotaligo_River_Manning_boundary (10)
• Pocotaligo_River_Manning_inundated (11)
• North_Fork_Edisto_River_Orangeburg_inundated (12)
• North_Fork_Edisto_River_Orangeburg_boundary (13)
• Mill_Creek_Columbia_boundary (14)
• Mill_Creek_Columbia_inundated (15)
• Kinley_Creek_Columbia_boundary (16)
• Kinley_Creek_Columbia_inundated (17)
• Green_Swamp_Sumter_boundary (18)
• Green_Swamp_Sumter_inundated (19)
• Gills_Creek_Columbia_boundary (20)
• Gills_Creek_Columbia_inundated (21)
• Crab_Tree_Swamp_Conway_boundary (22)
• Crab_Tree_Swamp_Conway_inundated (23)
• Coastal_North_Myrtle_Beach_boundary (24)
• Coastal_North_Myrtle_Beach_inundated (25)
• Coastal_Georgetown_boundary (26)
• Coastal_Georgetown_inundated (27)
• Coastal_Charleston_boundary (28)
• Coastal_Charleston_inundated (29)
• Black_River_Kingstree_boundary (30)
• Black_River_Kingstree_inundated (31)
• Black_River_Andrews_boundary (32)
• Black_River_Andrews_inundated (33)
• Black_Creek_Florence_boundary (34)
• Black_Creek_Florence_inundated (35)
• Black_Creek_Darlington_boundary (36)
• Black_Creek_Darlington_inundated (37)
• Ashley_River_Charleston_boundary (38)
• Ashley_River_Charleston_inundated (39)

Description: Heavy rainfall occurred across South Carolina during October 1-5, 2015, as a result of an upper atmospheric low-pressure system that funneled tropical moisture from Hurricane Joaquin into the State. The storm caused major flooding in the central and coastal parts of South Carolina. Almost 27 inches of rain fell near Mount Pleasant in Charleston County during this period. U.S. Geological Survey (USGS) streamgages recorded peaks of record at 17 locations, and 15 other locations had peaks that ranked in the top 5 for the period of record. During the October 2015 flood event, USGS personnel made about 140 streamflow measurements at 86 locations to verify, update, or extend existing rating curves (which are used to compute streamflow from monitored river stage). Immediately after the storm event, USGS personnel documented 602 high-water marks, noting the location and height of the water above land surface. Later in October, 50 additional high-water marks were documented near bridges for South Carolina Department of Transportation. Using a subset of these high-water marks, 20 flood-inundation maps of 12 communities were created. Digital datasets of the inundation area, modeling boundary, and water depth rasters are all available for download.

Copyright Text:

Spatial Reference: 2273 (2273)

Initial Extent:

XMin: 2186526.89860729
YMin: 390834.702881166
XMax: 2324798.61714076
YMax: 458661.817486883
Spatial Reference: 2273 (2273)

Full Extent:

XMin: 1936834.12434383
YMin: 341758.762094527
XMax: 2729614.26968504
YMax: 909580.800196854
Spatial Reference: 2273 (2273)

Units: esriFeet

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Supported Operations:   Query   ConvertFormat   Get Estimates