Kinsman, N.E.M. DeRaps, M.R. 2012 map sheet and vector digital data Report of Investigation RI 2012-2 v. 1.1 Fairbanks, AK, USA Alaska Division of Geological & Geophysical Surveys 51 p., 1 sheet. http://www.dggs.alaska.gov/pubs/id/24484 On November 8, 2011, an extra-tropical cyclone with a low pressure of 945 millibars developed over the Bering Sea and moved northeast across the western coast of Alaska. This large storm brought high winds (gusts of up to 85 mph) to the entire region and a storm surge of approximately 3 meters to parts of Norton Sound. The storm caused extensive flooding in the lower portion of Golovin on the afternoon of November 9, 2011. A team of Alaska Division of Geological & Geophysical Surveys (DGGS) scientists visited Golovin on November 15, 2011, to document peak water levels, runup elevations, and inundation extents caused by this event. These data were combined with photographs taken by local residents during the event and elevation data from the 2004 DCCED Community Map to generate inundation limit lines. The purpose of this shapefile is to show the extent of the November 9, 2011 flooding in Golovin, AK. The primary file of this data distribution package is a shapefile which shows the extent of the November 9, 2011 flooding in Golovin, AK. The DGGS metadata standard extends the FGDC standard to include elements that are required to facilitate our internal data management. These elements, referred to as "layers," group and describe files that have intrinsic logical or topological relationships. Attribute information for the layers is included in this metadata file under the "Entity_and_Attribute_Information" section. The layers are titled: >flood-extent-golovin-ak-11-09-12: Golovin, Alaska, November 2012 flood extent >border: outline shape of the study area 20111109 ground condition Complete None planned -163.044845 -163.030693 64.546407 64.540386 ISO 19115 Topic Category geoscientificInformation Alaska Division of Geological & Geophysical Surveys Coastal Coastal Erosion Flood Geologic Hazards Ice Push Methods Shoreface Storm Surge Tides Alaska Division of Geological & Geophysical Surveys Bering Straits CRSA Coastal District Nome Nome Quadrangle Norton Bay Quadrangle Norton Sound Solomon Quadrangle Unalakleet Quadrangle Walker, J. D., and Geissman, J. W., compilers, 2009, Geologic Time Scale: Geological Society of America Holocene This report, map, and/or dataset is available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (see contact information below). Any hard copies or published datasets utilizing these datasets shall clearly indicate their source. If the user has modified the data in any way, the user is obligated to describe the types of modifications the user has made. The user specifically agrees not to misrepresent these datasets, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys. The State of Alaska makes no express or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product. Alaska Division of Geological & Geophysical Surveys James Weakland GIS Analyst mailing and physical

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Fairbanks AK 99709-3707 USA (907)451-5029 (907)451-5020 dggsgis@alaska.gov 8 am to 4:30 pm, Monday through Friday, except State holidays This RDF is funded with qualified outer continental shelf oil and gas revenues by the Coastal Impact Assistance Program, U.S. Fish and Wildlife Service, and U.S. Department of the Interior. The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the opinions or policies of the U.S. Government. Mention of trade names or commercial products does not constitute their endorsement by the U.S. Government. A draft version of this work was reviewed by Golovin community members for accuracy and to resolve gaps in observed inundation extents as well as discrepancies between 2004 DCCED elevations and present-day conditions. The DGGS team would like to extend their deepest gratitude to all of the community members who took the time to share their videos, photographs, and observations and to those who provided the feedback that improved this map. Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcGIS 10.0.0.2414; GeoSetter 3.4.16 DeRaps, M.R. Kinsman, N.E.M. 2012 digital data Raw Data File RDF 2011-5 Fairbanks, AK, USA Alaska Division of Geological & Geophysical Surveys 3 DVDs http://www.dggs.alaska.gov/pubs/id/23143 DeRaps, M.R. Kinsman, N.E.M. 2012 document, digital data Raw Data File RDF 2012-4 Fairbanks, AK, USA Alaska Division of Geological & Geophysical Surveys 2 p http://www.dggs.alaska.gov/pubs/id/24465 Gray, Glenn Smith, J.R. Kinsman, N.E.M. 2012 document Miscellaneous Publication MP 147R Fairbanks, AK, USA Alaska Division of Geological & Geophysical Surveys p. 1-15 http://www.dggs.alaska.gov/pubs/id/24391 Sallenger, A.H., Jr. 1983 document Open-File Report OF 83-394 Fairbanks, AK, USA U.S. Geological Survey 11 p http://www.dggs.alaska.gov/pubs/id/11487 Smith, J.R. Gray, Glenn Kinsman, N.E.M. 2012 document Miscellaneous Publication MP 147 Fairbanks, AK, USA Alaska Division of Geological & Geophysical Surveys 5 p http://www.dggs.alaska.gov/pubs/id/24084 Smith, J.R. Kinsman, N.E.M. 2012 document Miscellaneous Publication MP 147E Fairbanks, AK, USA Alaska Division of Geological & Geophysical Surveys p. 1-6 http://www.dggs.alaska.gov/pubs/id/24107 Smith, J.R. Kinsman, N.E.M. 2012 document Miscellaneous Publication MP 147U Fairbanks, AK, USA Alaska Division of Geological & Geophysical Surveys p. 1-9 http://www.dggs.alaska.gov/pubs/id/24394 Certainty in placement of the inundation limit line is dependent on accurate identification of flood indicators in the field; these included the measurement of debris lines, water and slush limits in the snow, and elevations of visibly overtopped or inundated areas. Each measured flood indicator was assigned a qualitative confidence level to reflect the validity of inferring marine flood levels from the measurement. High confidence was applied to locations where evidence of a discrete water level was readily observed in the field (slush lines, for example). Medium confidence was applied to points that were measured at the best approximation of the water position based on partially obscured or indiscrete evidence (tension cracks in snow or many of the photo-identified points, for example). Lowest confidence was applied to points where the role of floodwater in the creation of a flood indicator was ambiguous, where locations were identified solely from the memories of residents, or where clean-up activities had modified the site enough to conceal the exact location of the flood extent. The elevation of the measured flood indicators as well as associated confidence levels are outlined in a table on Sheet 1 of the accompanying report. not applicable Due to the morphology of the Golovin coastline, which shelters the community from direct wave attack, the paucity of runup limit indicators and the short amount of time available in the field, the flood inundation limit line does not extend to the exposed (Golovin Bay) side of the community. However, reported accounts from several residents indicated that a protective band of slush helped to reduce the wave energy on the southern side of the community. Our observations supported these accounts because there was no evidence of waves overtopping the crest of the ice ridge along the Golovin Bay coast, except at the very southwestern tip of the peninsula near the old airport. For more information about the location and elevation of the measured flood indicators used to produce this inundation limit line see map sheet 1 of the accompanying report. The inundation limit line has a horizontal positional accuracy dependent on: 1) The error associated with the 32 field measurements of flood indicators. Measurements were obtained using a Topcon survey grade GPS, horizontal precision values were calculated using Topcon office software to be less than 10 cm. 2) The error associated with the position and elevation of contours on the DCCED community map. The DCCED map accuracy is reported as meeting National Cartographic Mapping Standards (90% of defined horizontal points are accurate to within 2 feet, 90% of elevations are accurate to within 1 foot). Alaska Department of Commerce, Community and Economic Development Kawarak-Incorporated 2004 map http://www.dced.state.ak.us/dca/profiles/profile-maps.htm image 2004 publication date Community Profile Map, Golovin, 2004 Provided elevation information and high resolution imagery. Fieldwork - Investigations following the November 8th storm consisted of one day of fieldwork during which the DGGS team was able to measure 32 flood indicators and collect personal accounts, photos and video from residents. 201211 Digitization of flood extent - The position of the inundation limit lines were first determined using the flood indicators measured in the field and photographs taken by local residents during the event. The lines were then fine tuned using the digital elevation model derived for the 2004 DCCED (Alaska Department of Commerce, Community, and Economic Development) Community Profile Map. Community Profile Map, Golovin, 2004 201203 Revision of flood extent - The inundation limit lines were revised in response to comments from Golovin residents whom were present during the flooding event. 201204 Metadata creation - Metadata for this map was compiled by Meagan DeRaps and Nicole Kinsman. 20120517 vector Universal Transverse Mercator 3 0.999600 -165 0 500000.000000 0 coordinate pair 0.000001 0.000001 meters flood-extent-golovin-ak-11-09-12 Universal Transverse Mercator 3 0.999600 -165 0 500000.000000 0 coordinate pair 0.000001 0.000001 meters border North American Datum of 1983 North American Datum of 1983 6378137 298.257222101 flood-extent-golovin-ak-11-09-12 ri2012-2-flood-extent-golovin-ak-11-09-12.shp Lines demarcating the limit of inundation. Alaska Division of Geological & Geophysical Surveys, this report Comment Comment about inundation limit line Alaska Division of Geological & Geophysical Surveys, this report Comment explaining the location of flood water relative to the line border ri2012-2-border.shp polygon outlining general boundary of data extent Alaska Division of Geological & Geophysical Surveys Alaska Division of Geological & Geophysical Surveys mailing and physical

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Fairbanks AK 99709-3707 USA (907)451-5020 (907)451-5050 dggspubs@alaska.gov 8 am to 4:30 pm, Monday through Friday, except State holidays Please view our website (http://www.dggs.alaska.gov) for the latest information on available data. Please contact us using the e-mail address provided above when possible. RI 2012-2 The State of Alaska makes no express or implied warranties (including warranties of merchantability and fitness) with respect to the character, function, or capabilities of the electronic services or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity, whether from the use of the electronic services or products, any failure thereof, or otherwise, and in no event will the State of Alaska's liability to the requestor or anyone else exceed the fee paid for the electronic service or product. DGGS publications are available as free online downloads or you may purchase paper hard-copies or digital files on CD/DVD or other digital storage media by mail, phone, fax, or email from the DGGS Fairbanks office. To purchase this or other printed reports and maps, contact DGGS by phone (907-451-5020), e-mail (dggspubs@alaska.gov), or fax (907-451-5050). Payment accepted: Cash, check, money order, VISA, or MasterCard. Turnaround time is 1-2 weeks unless special arrangements are made and an express fee is paid. Shipping charge will be the actual cost of postage and will be added to the total amount due. Contact us for the exact shipping amount. Contact DGGS for current pricing vector digital data http://www.dggs.alaska.gov/pubs/id/24484 Free download 20121009 Metadata manager mailing and physical

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Fairbanks AK 99709-3707 USA (907)451-5020 FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 If the user has modified the data in any way they are obligated to describe the types of modifications they have performed in the supporting metadata file. User specifically agrees not to imply that changes they made were approved by the Alaska Department of Natural Resources or Division of Geological & Geophysical Surveys. http://www.dggs.alaska.gov/metadata/dggs.ext dggs metadata extensions