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

Golden Goat at Almaden-Quicksilver (2003)

Map Standards

Notes:
  • The version of the standard linked here was published in January 2024. 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 smaller file (with identical content) 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 smaller file (with identical content) 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 January 2024. 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 smaller file (with identical content) 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.