Federal Emergency Management Administration
Florence L. Wong
2006
F4100320002C.TIF - FEMA Flood Insurance Rate Maps for the Seaside-Gearhart, Oregon, Area: Seaside 2
1
map
Data Series
236
Western Coastal and Marine Geology, Menlo Park, California
U.S. Geological Survey, Coastal and Marine Geology Program
http://pubs.usgs.gov/ds/2006/236/download/f4100320002c.zip
http://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
Data Series
236
Menlo Park, California
U.S. Geological Survey
http://pubs.usgs.gov/ds/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
-123.941049
-123.918417
45.981637
45.948457
USGS Metadata Identifier
USGS:6ea70397-de3f-48a3-b4ba-8bce82e9c392
None
U.S. Geological Survey
USGS
Coastal and Marine Geology Program
CMGP
Western Coastal and Marine Geology
WCMG
probabilistic tsunami hazard assessment
coastal geology
PTHA
tsunami probability
tsunami hazard
FEMA FIRM flood insurance rate map
GeoTIFF image
USGS Thesaurus
tsunamis
geospatial datasets
ISO 19115 Topic Category
oceans
environment
geoscientificInformation
imageryBaseMapsEarthCover
Geographic Names Information System
Seaside
Gearhart
Oregon
USA
United States
North America
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.
These data are not to be used for navigation purposes. Mariners should refer to the appropriate nautical chart.
Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey as the originator of the dataset.
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
http://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
Open-File Report
2006-1234
Menlo Park, California
U.S. Geological Survey
http://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 2 of 2
map
FEMA Flood Insurance Rate Map; Community-panel number 410032 0002 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 (.jpg) image.
2005
Edited metadata to add keywords section with USGS persistent identifier as theme keyword. No data were changed.
20201019
U.S. Geological Survey
VeeAnn A. Cross
Marine Geologist
Mailing and Physical
384 Woods Hole Road
Woods Hole
MA
02543-1598
508-548-8700 x2251
508-457-2310
vatnipp@usgs.gov
Edited metadata for minor typos and to bring it up to PCMSC standards, including adding USGS Thesaurus keyword terms. No data were changed.
20211008
U.S. Geological Survey
Susan Cochran
Geologist
Mailing and Physical
2885 Mission Street
Santa Cruz
CA
95060
831-460-7545
scochran@usgs.gov
Raster
Pixel
7334
3422
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
Information Services
Box 25286
Denver
Colorado
80225-0286
USA
1-888-275-8747
infoservices@usgs.gov
Downloadable Data: U.S. Geological Survey Data Series 236
Although these data have been used by the U.S. Geological Survey (USGS), U.S. Department of the Interior (DOI), 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 USGS in the use of these data or related materials.
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
TIFF
9.1
ArcGIS GeoTIFF
GeoTIFF image, world file, projection information, metadata and browse graphic
zip archive
3.3
http://pubs.usgs.gov/ds/2006/236/download/f4100320002c.zip
http://pubs.usgs.gov/ds/2006/236/catalog.shtml
http://pubs.usgs.gov/ds/2006/236/
Data may be downloaded via the World Wide Web (WWW).
None
This image is available as a GeoTIFF image with an accompanying world file. To utilize this data, the user must have an image viewer, image processing or GIS software package capable of importing a GeoTIFF image.
20211008
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
Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
local time