• The Point Reyes Beach as viewed from the Point Reyes Headlands

    Point Reyes

    National Seashore California

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  • 2014 Harbor Seal Pupping Season Closures

    From March 1 through June 30, the park implements closures of certain Tomales Bay beaches and Drakes Estero to water-based recreation to protect harbor seals during the pupping season. Please avoid disturbing seals to ensure a successful pupping season. More »

  • 2014 Winter Shuttle Bus Operations Have Ended

    March 30, 2014, was the last day for the 2014 Winter Shuttle Bus System. Sir Francis Drake Blvd. is open daily from now through late December 2014. More »

  • Operational Changes Took Effect on May 1, 2013

    The Lighthouse Visitor Center is now only open Fridays through Mondays; closed Tuesdays through Thursdays, including Thanksgiving. The Kenneth C. Patrick Visitor Center is open on weekends and holidays when shuttles are operating. More »

Reading Room: Other Documents of Interest: Upper Drakes Estero Harbor Seal and Oyster Activity Data

The data files posted here in separate ZIP files contain harbor seal data and oyster activity assessment data collected from the eastern shore of Drakes Estero, Point Reyes National Seashore (PORE) from March through June 2008 and April through July 2009.

In accordance with Executive Order 12906, these data files have been provided with metadata records following the Federal Geographic Data Committee (FGDC) Content Standard for Digital Geospatial Metadata (CSDGM). Table and data field definitions can be viewed in the metadata records (5 Entity and Attribute Information). Metadata records for each of the databases also include a data quality section (2 Data Quality Information) that describes the error-checking, quality control, and quality assurance measures taken with each data set.

The metadata files have been provided in PDF format.

Datasheets completed in 2009 have not been entered into any digital format and have therefore been scanned and made available below as a single PDF document.

PORE_PHOCA_DE_Upper_2008 (135 KB Zip file containing a Microsoft Access Database)
Harbor Seal Monitoring, Point Reyes National Seashore, Upper Drakes Estero, March-June 2008. Supplemental harbor seal monitoring of upper Drakes Estero subsites. Additional data include the sources of disturbance to harbor seals and associated harbor seal responses.

Oyster Activity Worksheet (238 KB Zip file)
Oyster Activity Assessment, Point Reyes National Seashore, Upper Drakes Estero. Records of oyster mariculture activity collected in Drakes Estero from the eastern shore between March 3, 2008 and June 5, 2008. Update 1/27/11: Video tape 1, referenced in the data file, has been found and is now available. For videos referenced from tape 1 and tape 2 in the data file, click here.

Oyster Activity Photolog Worksheet (25 KB Zip file)
Oyster Activity Assessment Photolog, Point Reyes National Seashore, Upper Drakes Estero. Records of still photographs taken in Drakes Estero from the eastern shore between March 3, 2008 and June 5, 2008. Photos referenced in the data file can be found below. Not all photos can be located at this time.

Oyster Activity MapDetails Worksheet (78 KB Zip file)
Upper Drakes Estero Harbor Seal Distribution. Counts of harbor seal subgroups at haul-out sites OB, UEF, and UEN collected in Drakes Estero from the eastern shore between March 3, 2008 and June 5, 2008. Data is an extension of the Upper Drakes Estero harbor seal database described above.

Upper Drakes Estero Datasheets 2009 (2,171 KB PDF)
Scanned datasheets that have not been entered into any digital format. Data includes harbor seal count data of upper Drakes Estero subsites OB, UEN, and UEF, associated disturbances and harbor seal responses, and oyster activity assessment data.

Upper Drakes Estero Datasheets 2010 (543 KB PDF)
Scanned datasheets that have not been entered into any digital format. Data includes harbor seal count data of upper Drakes Estero subsites OB, UEN, and UEF.


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Did You Know?

Fog-filled valley with yellow twilight glow over a ridge in the background. © John B. Weller.

The rich, lush environment of Point Reyes heavily depends on the fog. During rainless summers, fog can account for 1/3 of the ecosystem's water input. But recent studies have indicated that there has been about a 30 percent reduction in fog during the last 100 years here in coastal California. More...