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Welcome to the TopoQuest Map Viewer!
South Portal, WA is a tunnel located in King County at N47.59704° W122.33568° (NAD83). This is the nearest place in the USGS place names database to the center of the map view below.  Look below the map view for a list of other places and locations that are visible within this map view.  If you need to locate a landmark or feature, you can search for its location on our Find Places page.  If you need to locate a specific USGS topographic map, try our Find Maps page.

Map Center:  N47.59704°  W122.33568°    Datum: NAD83    Zoom: 4m/pixel

Places Within This Map View:
Place Type Coordinates (click to center)
South PortalTunnelN47.59704° W122.33568°
Pier 47LocaleN47.59565° W122.33763°
Pier 48LocaleN47.59676° W122.33818°
Pier Forty SixLocaleN47.59815° W122.33818°
Qwest FieldParkN47.59510° W122.33290°
Pioneer Square Post OfficePost OfficeN47.60027° W122.33436°
Edgewater Inn HeliportAirportN47.60065° W122.33596°
Klondike Gold Rush National Historical ParkParkN47.59982° W122.33318°
Alaska Marine Highway TerminalLocaleN47.60038° W122.33790°
Kingdome (historical)LocaleN47.59565° W122.33179°
Seattle Fire Department HeadquartersBuildingN47.59974° W122.33200°
Episcopal Maritime MinisitryChurchN47.60170° W122.33650°
Stadium Exhibition CenterBuildingN47.59315° W122.33290°
King Street CenterBuildingN47.59891° W122.33110°
Qwest Field Event CenterBuildingN47.59340° W122.33200°
Pier 55LocaleN47.60121° W122.33902°
Terminal Number 46LocaleN47.59427° W122.34040°
Colman DocksLocaleN47.60177° W122.33846°
Pier 52LocaleN47.60038° W122.34013°
Pioneer SquareLocaleN47.60204° W122.33263°
Seattle Ferry Landing Pier 52LocaleN47.60219° W122.33904°
Freeway ParkParkN47.59260° W122.33124°
Pier 53LocaleN47.60288° W122.33818°
King Street StationLocaleN47.59871° W122.32929°
Safeco FieldParkN47.59093° W122.33263°
Seattle Ferry Landing Pier 50LocaleN47.60320° W122.33907°
Arctic BuildingBuildingN47.60315° W122.33207°
Federal Post OfficePost OfficeN47.60423° W122.33613°
Seattle Fire Department Station 5BuildingN47.60360° W122.33883°
Smith TowerBuildingN47.60343° W122.33179°
King County Sheriff's OfficeBuildingN47.60255° W122.33052°
King County CourthouseBuildingN47.60266° W122.33055°
Coast Guard Museum NorthwestBuildingN47.59010° W122.33902°
Pier 54LocaleN47.60426° W122.33874°
Union DepotLocaleN47.59871° W122.32790°
Salvation ArmyChurchN47.59402° W122.32831°
Kids Centre Daycare CenterSchoolN47.60515° W122.33707°
Seattle Fire Department Station 10BuildingN47.60122° W122.32852°
Massachusetts Street SubstationLocaleN47.58872° W122.33593°
Little Eagles Daycare CenterSchoolN47.60550° W122.33492°
Church of Mary MagdaleneChurchN47.60479° W122.33130°
Seattle Public Utilities BuildingBuildingN47.60465° W122.33091°
KBEH-TV (Bellevue)TowerN47.60454° W122.33068°
KBGE-TV (Bellevue)TowerN47.60454° W122.33068°
KONG-TV (Everett)TowerN47.60454° W122.33068°
Coast Guard Station SeattleMilitaryN47.58920° W122.34014°
Bright Horizons at Fourth and MadisonSchoolN47.60572° W122.33321°
Terminal Number 37LocaleN47.59288° W122.34374°
Rainier ClubBuildingN47.60538° W122.33207°
Seafirst Post OfficePost OfficeN47.60622° W122.33402°
Nikkei Manor Assisted Living CommunityBuildingN47.59629° W122.32615°
Columbia Center Branch Post OfficePost OfficeN47.60460° W122.32970°
First Church of Christ ScientistChurchN47.60670° W122.33670°
Seattle Police Department - HeadquartersBuildingN47.60435° W122.32925°
Seattle Central LibraryBuildingN47.60630° W122.33260°
First United Methodist ChurchChurchN47.60540° W122.33060°
SeattlePopulated PlaceN47.60621° W122.33207°
1001 Fourth Avenue Plaza HeliportAirportN47.60677° W122.33374°
King County Correctional FacilityBuildingN47.60369° W122.32810°
Pier Fifty SixLocaleN47.60565° W122.34096°
International Post OfficePost OfficeN47.59884° W122.32529°
Pier 36LocaleN47.58982° W122.34346°
Seattle Art MuseumBuildingN47.60744° W122.33808°
Olympic HotelBuildingN47.60760° W122.33402°
Seattle TowerBuildingN47.60788° W122.33596°
Interchange 165ACrossingN47.60435° W122.32752°
Nippon Kan TheaterBuildingN47.60065° W122.32513°
Waterfront ParkParkN47.60676° W122.34152°
Schwabachers DockLocaleN47.60732° W122.34068°
Pier 34LocaleN47.58815° W122.34290°
Puget Sound Community SchoolSchoolN47.59643° W122.32418°
KXATowerN47.60815° W122.33874°
KRPM-AM (Seattle)TowerN47.60815° W122.33874°
Midtown Seattle Post OfficePost OfficeN47.60866° W122.33649°
Washington Building HeliportAirportN47.60815° W122.33179°

Note: Coordinates listed above are datum selected on the sidebar.
Click on map to:
Zoom In Zoom in (x2)
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Pan Re-center

Map contents:
Choose Automatically
Overall Coverage
1:24K Coverage (US)
1:24K Topo maps (US)
1:50K Coverage (Canada)
1:50K Topo maps (Canada)
1:100K Coverage (US)
1:100K Topo maps (US)
1:250K Coverage (US)
1:250K Topo maps (US)
Satellite 1m Coverage (US)
Satellite 1m (US)

Zoom level:
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4km per pixel
10km per pixel

Map Size:
Small'ish (512x512)
Medium Rare (768x768)
Grande! (1024x1024)
Extra Grande! (1280x1280)


Coordinate format:
Nddd.ddd°  Wddd.ddd°
Nddd°mm.m'  Wddd°mm.m'
Nddd°mm' ss"  Wddd° mm' ss"

Draw crosshair at center

Note (5/31/2016) - Want a crosshair at the center coordinates of the map?  A number of people have asked, so that option has been added!

Note (6/26/2013) - Map sizes are now larger, and an extra-large (1280x1280) option has been added as well.

Note (8/18/2010) - The transition to the new TopoQuest server is now complete.  Aside from a glitch that affected the TopoZone alternative map.asp script much of Monday (8/17/2010) afternoon and evening, all went pretty smoothly.  Response time of the TopoQuest website overall should be much snappier, and addition of more 1m satellite / aerial imagery is back underway!

Note (8/2/2010) - Full USGS 1:100K and 1:250K topographic map coverage of the continental US is now completed and online.  Plus, I have the new TopoQuest server under construction with a 9TB RAID6 disk array to continue adding satellite/aerial photo coverage.  Yay!

Note (7/21/2009) - Locations of places of interest (from the USGS placenames database) within the map area you are viewing are now listed below the map when viewing at 64m/pixel or below.  You can click the name of the place to go to its description page, or click the coordinates to recenter your map view on that place.

Note (6/1/2009) - We've started adding 1m/pixel aerial and satellite imagery, starting with Oregon and slowly branching out from there.  Please be patient, it takes a very long time to download and process all this imagery, as well as huge amounts of disk space!

Note (3/07/2009) - We've started adding 1:100K and 1:250K scale USGS topographic maps, starting with southern Oregon and moving out from there.  Coverage will be a bit sparse at first while we crank up automated processing of map tiles at these topographic map scales.  To view 1:100K and 1:250K scale topos, you'll need to manually select them from the sidebar (the Choose Automatically selection will not select these map scales until we have more coverage).  You can use the coverage map types to see what areas we've already processed and have online.  Also note that satellite photo coverage isn't meant to be particularly useful at this point, it's just (very) experimental.

Note (7/31/2008) - We've started adding 1:50K scale topographic maps of Canada, starting with British Columbia.  The Canadian topographic map coverage is still a bit experimental, and integration into the map viewer still needs a little work.  The map viewer will not yet automatically select the 1:50K scale topographic maps, so if you're trying to view maps in Canada, you may need to manually switch to the 1:50K Topo Maps selection in the Map Contents section of the sidebar.

Note (4/15/2008) - With the demise of non-subscription access to TopoZone (now merged with, a subscription service), we're scrambling to process all topographic maps for the US and make them available as quickly as possible.  We now have four Linux PC's crunching map data 24/7 to produce and index map data continuously.  We should be adding approximately fifteen 1 degree x 1 degree blocks of map data (approximately 1000 individual 7.5 minute 1:24000 topo maps) per day.  We're starting with southern Oregon (because that's where we live!) and northern California and branching out from there.

TopoZone URL Replacement
Do you have a Topozone map URL that you want to convert to the TopoQuest equivalent?  Simply replace with in the URL, and you'll get the equivalent map as what Topozone used to produce!  We have more details on using TopoQuest as a Topozone alternative on our Topozone Replacement page.

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