Table of contents

Park List


This is an overview of the map quality and terrain types for most of the Bay Area and Sierra parks that have been mapped by BAOC, GCO, Terraloco, and Get LOST!!. Please see the notes about the Map Standards and Poison Oak that follow after the table. Driving directions to Bay Area parks are available on another page.

Notes:

Map Name Region Map Standard  Scale Contour Interval
  Terrain Type   Poison Oak   Steepness
Almaden-Quicksilver South Bay ISOM 1:10000 5 meters
  Semi-open   High   High
Annadel North Bay ISOM 1:15000 5 meters
  Semi-open   Moderate   Moderate
Anthony Chabot East Bay Black & white 1:10000 20 feet
  Semi-open   Moderate   Moderate
Arastadero South Bay Local color 1:11000 20 feet
  Semi-open   Moderate   Moderate
Bedwell Bayfront Park Peninsula ISOM 1:5000 10 feet
  Open   Very low   Low
Berkeley Marina East Bay ISSOM 1:5000 2.5 meter
  Open   Very low   Low
Bear Valley Sierra ISOM varies 40 feet
  XC ski   None   Moderate
Big Basin South Bay ISOM 1:10000 20 feet
  Forest   Very low   High
Boggs Mountain Lake County ISOM 1:10000 5 meters
  Forest   Very low   Moderate
Bon Tempe North Bay Local color 1:10000 40 feet
  Forest   Moderate   Moderate
Boreal Ridge Sierra ISOM 1:15000 5 meters
  Semi-open   None   Moderate
Briones East Bay ISOM 1:10000 7.5 meters
  Semi-open   Moderate   High
Burton Creek Sierra ISOM 1:10000 5 meters
  Semi-open   None   Moderate
Calero South Bay ISOM 1:10000 25 feet
  Semi-open   Moderate   Moderate
Castle Rock South Bay Black & white 1:12000 40 feet
  Forest   Moderate   Moderate
China Camp North Bay ISOM 1:10000 5 meters
  Forest   Moderate   High
Coyote Hills East Bay Local color 1:10000 5 meters
  Open   Low   Moderate
CSU Sacramento Central Valley Black & white 1:5000  
  Campus   Very low   Flat
Diablo Valley College East Bay ISSOM 1:5000  
  Campus   None   Low
Dimond Park East Bay Black & white    
  Streets   None   Moderate
Doton's Point Central Valley Local color 1:10000 10 feet
  Semi-open   High   Moderate
Edgewood Park Peninsula Local Color   40 feet
  Semi-open   Moderate   Moderate
Emerald Hills Peninsula Local Color 1:15000 20 feet
  Streets   None   Moderate
Fallen Leaf Lake Sierra ISOM 1:10000 5 meters
  Semi-open   None   Moderate
Golden Gate Park Peninsula Local color 1:7500 3 meters
  City park   Low   Low
Huddart Park Peninsula Local color 1:10000 7.5 meters
  Forest   Low   High
Indian Gulch East Bay Black & white 1:20000 20 feet
  Streets   None   Moderate
Indian Valley North Bay ISOM 1:10000 5 meters
  Forest   Low   Moderate
Joaquin Miller East Bay ISOM 1:10000 20 feet
  Forest   Moderate   Moderate
Joseph Grant South Bay ISOM 1:15000 5 meters
  Semi-open   Moderate   Moderate
Knowland Park East Bay ISOM 1:10000 20 ft
  Semi-open   Moderate   Moderate
Lafayette Reservoir East Bay Local color 1:10000 20 feet
  Semi-open   Moderate   Moderate
Lake Elizabeth East Bay ISOM 1:10000 2.5 meters
  City park   Very low   Very low
Lake Temescal East Bay Black & white   20 feet
  Streets   None   Moderate
Las Trampas East Bay ISOM 1:15000 7.5 meters
  Semi-open   Moderate   High
McLaren Park Peninsula ISSOM 1:5000 2.5 meters
  City park   Low   Low
Mississippi Bar Central Valley ISOM 1:7500 2.5 meters
  Semi-open   Moderate   Low
Monte Bello South Bay ISOM 1:10000 5 meters
  Semi-open   Moderate   Moderate
Morgan Territory East Bay ISOM 1:15000 5 meters
  Semi-open   Moderate   Moderate
Nisene Marks South Bay ISOM 1:15000 7.5 meters
  Forest   High   High
Northstar Resort Sierra ISOM 1:10000 5 meters
  Semi-open   None   Moderate
Oyster Bay East Bay ISSOM 1:5000 2.5 meters
  Open   Low   Low
Pacheco Pass South Bay ISOM 1:15000 5 meters
  Open   Low   Moderate
Perry Riffle N. Central Valley ISOM 1:10000 3 meters
  Very open   Low   Moderate
Point Pinole East Bay ISOM 1:10000 2.5 meters
  Semi-open   Moderate   Low
Presidio of SF Peninsula ISOM 1:10000 20 feet
  City park   Low   Low
Rancho San Antonio South Bay Local color 1:10000 20 feet
  Semi-open   High   Moderate
Red Hills Central Valley Black & white 1:30min 50 feet
  Semi-open   Low   Moderate
Redwood Regional East Bay Black & white 1:15000 20 feet
  Semi-open   High   Moderate
Rossmoor Bar Central Valley ISOM 1:7500 5 feet
  Semi-open   Moderate   Low
Royal Gorge Sierra ISOM varies 40 feet
  XC ski   None   Moderate
Shell Ridge East Bay ISOM 1:10000 5 meters
  Semi-open   Low   Moderate
Shoreline Park South Bay Local color 1:5000 2 meters
  City park   Very low   Very low
Skyline Ridge South Bay ISOM 1:10000 5 meters
  Semi-open   Moderate   Moderate
Spenceville Central Valley Black & white 1:15000 20 feet
  Semi-open   Low   Moderate
Spooner Lake Sierra ISOM 1:10000 5 meters
  Forest   None   Moderate
Spring Lake North Bay ISSOM 1:10000 5 meters
  City park   Low   Low
Stanford Peninsula ISOM 1:7500 3 meters
  Campus   Very low   Very low
Sugar Bowl Sierra ISOM 1:10000 5 meters
  Forest   None   Moderate
Sunol East Bay ISOM 1:15000 7.5 meters
  Semi-open   Moderate   High
Tamarancho North Bay ISOM 1:10000 5 meters
  Semi-open   Moderate   High
Tilden Park East Bay ISOM 1:10000 5 meters
  Semi-open   High   Moderate
U.C. Berkeley East Bay ISSOM 1:4000 2.5 meter
  Campus   None   Low
Vasona Lake South Bay ISOM 1:4000 10 feet
  City park   Very low   Very low
Wildcat Canyon East Bay Local Color 1:15000 5 meter
  Semi-open   Moderate   High
Wilder Ranch South Bay Local color 1:15000 20 feet
  Semi-open   Moderate   Moderate
Willow Glen South Bay Local Color 1:15000 5 feet
  Streets   None   Very low
Map Name Region Map Standard Scale Contour Interval
  Terrain Type   Poison Oak   Steepness

Controls from a master map at Calero Resevior

Map Standards

Notes:
  • The version of the standard linked here was published in September 2022. Changes from the previous versions are listed at the end of the file.
  • The ISOM 2017-2 PDF file is stored on the BAOC website because it's a much smaller (but identical) file compared to the one on the IOF website (https://orienteering.sport/iof/mapping/).
Notes:
  • The ISSOM 2007 PDF file is stored on the BAOC website because it's a much smaller (but identical) file compared to the one on the IOF website (https://orienteering.sport/iof/mapping/).
  • This edition of the Sprint Map standard was superceded on January 1, 2020 by the ISSprOM standard described below.
  • In addition to there being special map symbols used on ISSOM maps, special competition rules apply at Sprint events. Be sure you know about them to avoid being disqualified (or jeopardizing our relationship with the venue administration).
Notes:
  • The version of the standard linked here was published in September 2022. Changes from the previous versions are listed at the end of the file.
  • The ISSprOM 2019 PDF file is stored on the BAOC website because it's a much smaller (but identical) file compared to the one on the IOF website (https://orienteering.sport/iof/mapping/).
  • The ISSprOM went into effect on January 1, 2020. The changes in the new standard (i.e., as compared to the ISSOM) are described in this file (PDF/765KB).
  • In addition to there being special map symbols used on ISSprOM maps, special competition rules apply at Sprint events. Be sure you know about them to avoid being disqualified (or jeopardizing our relationship with the venue administration).
  • The IOF has published a supplement (PDF/2.6MB) to the ISSprOM standard that provides guidelines for mapping of, and course setting for Sprint events in, complex urban structures. (This is new in January 2022.)

Photo gallery image (click to enlarge)

Photo gallery image (click to enlarge)

Poison Oak

Note the pictures of poison oak above. Poison oak is green in the summer and yellow or red in the fall. In the winter there are no leaves at all, just the vine stems (which still pose a hazard). For more information on this bane of orienteers, see our FAQ page, the Poison Oak FAQ (http://www.knoledge.org/oak/), or the Poison Ivy, Oak, and Sumac Information Center (http://poisonivy.aesir.com/).


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Wyatt Riley created this table 2/13/97 and updated it 7/25/98. Abby Wolf updated it 2/26/00. Van Boughner updated it 12/2/03 and placed it in the wiki on 1/15/06. Various people have made updates since then.