Federal Emergency Management Administration
Florence L. Wong
2006
FEMA Flood Insurance Rate Maps for the Seaside-Gearhart, Oregon, Area: Seaside 1 (f4100320001c.tif)
1
map
https://pubs.usgs.gov/ds/2006/236/catalog.shtml
Florence L. Wong
Angie J. Venturato
Eric L. Geist
2006
Seaside, Oregon, Tsunami Pilot Study - Modernization of FEMA Flood Hazard Maps: GIS Data
raster digital data
U.S. Geological Survey Data Series
236
Menlo Park, California
U.S. Geological Survey
https://pubs.usgs.gov/of/2006/236/
FEMA's Flood Insurance Rate Map (FIRM) depicts the spatial extent of Special Flood Hazard Areas (SFHAs) and other thematic features related to flood risk assessment. FIRMs also provide a basis for establishing flood insurance coverage premium rates offered through the National Flood Insurance Program (NFIP). These maps were published as paper documents, which have been scanned into image files (TIFF) as part of FEMA's FIRM modernization process. This is one of three scanned maps for the Seaside-Gearhart area - 410030 0001 D, 410032 0001 C, and 410032 0002 C - that were georeferenced for the probabilistic tsunami hazard assessment project.
This data set is one of a collection of digital files of a
geographic information system of spatially referenced
data related to the Seaside, Oregon, Tsunami Pilot
Study.
Federal Emergency Management Agency (FEMA) Federal
Insurance Rate Map (FIRM) guidelines do not
currently exist for conducting and incorporating tsunami
hazard assessments that reflect the substantial advances in
tsunami research achieved in the last two decades (Tsunami
Pilot Study Working Group, 2006). Therefore, as part of FEMAs
Modernization Program, a Tsunami Pilot Study was carried
out in the Seaside/Gearhart, Oregon, area to provide
information from which tsunami mapping guidelines could be
developed. This area was chosen because it is typical of
coastal communities in the section of the Pacific Coast
from Cape Mendocino to the Strait of Juan de Fuca. There
was also considerable interest shown by state agencies and
local stakeholders in mapping the tsunami threat to this
area. The study was an interagency effort by scientists
from the U.S. Geological Survey, the National Oceanic and
Atmospheric Administration, the University of Southern
California, and the Middle East Technical University. We
present the GIS data from that report in this publication.
These data are intended for science researchers, students, policy
makers, and the general public. The data can be
used with geographic information systems (GIS) software
to display geologic and oceanographic information.
The following explanatory text was transcribed from Flood Insurance
Rate Map 410027 0019 B, Clatsop County (Unincorporated
Areas), revised June 16, 1999 (FEMA, 1999).
Elevations referenced to the National Geodetic Vertical
Datum of 1929 (NGVD29).
Zone A: Areas of 100-year flood; base flood elevations and
flood hazard factors not determined.
Zone A0: Areas of 100-year shallow flooding where depths
are between one (1) and three (3) feet; average depths of
inundation are shown, but no flood hazard factors are
determined.
Zone AH: Areas of 100-year shallow flooding where depths
are between one (1) and three (3) feet; base flood
elevations are shown, but no flood hazard factors are
determined.
Zone A1-A30: Areas of 100-year flood; base flood
elevations and flood hazard factors determined.
Zone A99: Areas of 100-year flood to be protected by flood
protection system under construction; base flood elevations
and flood hazard factors not determined.
Zone B: Areas between limits of the 100-year flood and
500-year flood; or certain areas subject to 100-year
flooding with average depths less than one (1) foot or
where the contributing drainage area is less than one
square mile; or areas protected by levees from the base
flood. (Medium shading)
Zone C: Areas of minimal flooding. (No shading)
Zone D: Areas of undetermined, but possible, flood
hazards.
Zone V: Areas of 100-year coastal flood with velocity
(wave action); base flood elevations and flood hazard
factors not determined.
Zone V1-V30: Areas of 100-year coastal flood with velocity
(wave action); base flood elevations and flood hazard
factors determined.
1981
ground condition
None planned
-123.938736
-123.894048
46.017589
45.981446
none
probabilistic tsunami hazard assessment
tsunamis
coastal geology
PTHA
tsunami probability
tsunami hazard
FEMA FIRM flood insurance rate map
ISO 19115 Topic Category
environment
geoscientificInformation
oceans
Geographic Names Information System
Seaside, Oregon
Gearhart, Oregon
Oregon
USA
GEOnet Names Server
north Pacific Ocean
None.
The data, digital results, GIS layers, and map products in this database have been created specifically as part of a pilot study for FEMA's modernization of Flood Insurance Rate Maps (FIRMs) project. The results of the pilot study are intended to help FEMA draft new guidelines related to tsunami flooding for Coastal Flood Hazard Analysis and Mapping for the Pacific Coast of the United States. The results are intrinsically probabilistic and designed according to FEMA flood zone specifications: annual probabilities of exceedance of 1% and 0.2%. The data, digital results, GIS layers, and map products are not intended for other uses. In particular, the 1% and 0.2% annual exceedance probability tsunami flood maps are not to be used for emergency planning, evacuation, or other insurance purposes. Please refer to the National Tsunami Hazard Mitigation Program tsunami inundation maps for use in emergency planning.
Please recognize the U.S. Geological Survey (USGS) as the source of
this information.
Although these data have been used by the U.S. Geological Survey,
U.S. Department of the Interior, no warranty expressed or implied
is made by the U.S. Geological Survey as to the accuracy of the
data.
The act of distribution shall not constitute any such warranty, and
no responsibility is assumed by the U.S. Geological Survey in the
use of this data, software, or related materials.
This information is not intended for navigational purposes.
Any use of trade, firm, or product names is for descriptive
purposes only and does not imply endorsement by the U.S.
Government.
Florence L. Wong
U.S. Geological Survey
Geologist
mailing and physical address
345 Middlefield Road, MS 999
Menlo Park
California
94025
USA
650-329-5327
650-329-5190
fwong@usgs.gov
https://pubs.usgs.gov/ds/2006/236/metadata/f41003.jpg
FEMA Flood Insurance Rate Maps for the Seaside-Gearhart, Oregon, Area
JPEG
Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 9.1.0.722
Tsunami Pilot Study Working Group
2006
Seaside, Oregon Tsunami Pilot Study - Modernization of FEMA Flood Hazard Maps
1
U.S. Geological Survey Open-File Report
2006-1234
Menlo Park, California
U.S. Geological Survey
https://pubs.usgs.gov/of/2006/1234/
Data set is a raster image and contains no attribute information.
No tests of logical consistency were conducted
Complete.
The FEMA Flood Insurance Rate Map images presented here are
georeferenced to USGS DRGs for comparison to data produced
by probabilistic tsunami hazard assessment (PTHA). The exact
placement of any geographic feature as portrayed in these
edited images has not been verified.
Federal Emergency Management Administration
1981
City of Seaside, Oregon, Clatsop County, panel 1 of 2
map
FEMA Flood Insurance Rate Map
Community-panel number 410032 0001 C
initial identification: December 7, 1973; Flood hazard boundary map revision: April 23, 1976; Flood insurance rate map effective: September 5, 1979; Flood insurance rate map revisions: October 27, 1981 to updatecorporate limits, to add base flood elevations, to add specialflood hazard areas, and to change zone designations
http://msc.fema.gov/webapp/wcs/stores/servlet/FemaWelcomeView?storeId=10001&catalogId=10001&langId=-1&userType=G
6000
digital image of paper map
1981
publication date
FEMA, 1981
map
Federal Emergency Management Administration
1999
Clatsop County, Oregon (Unincorporated areas)
map
FEMA Flood Insurance Rate Map
Community-panel number 410027 0019 B
initial identification: December 20, 1974;
Flood hazard boundary map:
Flood insurance rate map effective: July 3, 1978;
Flood insurance rate map revisions: Map revised June 16, 1999 to
update corporate limits, to add base flood elevations, to add
special flood hazard areas, and to change zone designations
digital image of map
1999
publication date
FEMA, 1999
explanation key
TIFF images of paper FEMA Flood Insurance Rate Maps were registered to USGS Digital Raster Graphics images for the Seaside-Gearhart, Oregon, area using a second-order polynomial transformation and saved as an Arc grid. The grid was clipped to the data area and converted to a TIFF (.tif) image.
2005
Raster
Pixel
7954
6830
1
Universal Transverse Mercator
10
0.999600
-123.000000
0.000000
500000.000000
0.000000
row and column
0.500000
0.500000
meters
North American Datum of 1983
Geodetic Reference System 80
6378137.000000
298.257222
Raster image of FEMA Flood Insurance Rate Map
None.
U.S. Geological Survey
mailing address
USGS Information Services
Box 25286
Denver
Colorado
80225-0286
USA
1-888-275-8747
infoservices@usgs.gov
U.S. Geological Survey Open-File Report 236
This information is not intended for navigational purposes.
Any use of trade, firm, or product names is for descriptive
purposes only and does not imply endorsement by the U.S.
Government.
TIFF
7
https://pubs.usgs.gov/ds/2006/236/
None
Geographic information systems (GIS) software is necessary
for access to all features of the data set, but image formats may be
viewed by other graphics software.
20060727
U.S. Geological Survey
Florence L. Wong
Geologist
mailing and physical address
345 Middlefield Road, MS 999
Menlo Park
California
94025
USA
650-329-5327
650-329-5190
fwong@usgs.gov
FGDC Content Standards for Digital Geospatial Metadata
FGDC-STD-001-1998
local time
http://www.esri.com/metadata/esriprof80.html
ESRI Metadata Profile
http://www.esri.com/metadata/esriprof80.html
ESRI Metadata Profile