• Scenic View from Inspiration Point, Anacapa Island ©timhaufphotography.com

    Channel Islands

    National Park California

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  • Santa Barbara Island Closed Due to Storm Damage

    Santa Barbara Island is currently closed to public access due to damage from the high surf associated with Hurricane Marie. More »

  • San Miguel Island Closure

    In the interest of public safety, the U.S. Navy is closing San Miguel Island until further notice due to recent concerns of possible unexploded ordnance. More »

Assessment of Coastal Water Resources and Watershed Conditions


This report is a cooperative effort between the Marine Science Institute, University of California Santa Barbara, and the National Park Service, and provides a summary of the current status of aquatic resources (freshwater and marine) at Channel Islands National Park. The purpose of this report was to examine existing information pertaining to water quality, the condition of aquatic habitats and their biota, sources of point and non-point pollution in the region, avenues of transport of pollutants to Park waters, and threats to aquatic resources stemming from consumptive and non-consumptive uses of Park habitat. In addition, the report identifies current information gaps and makes recommendations for addressing them.

Note: This document requires Adobe Reader to view and is separated for easier downloads on slow connections.

Cover Page and Executive Summery (PDF, 240 Kb)
I. Park Description (PDF, 1.5 Mb)
II. Assessment of Water Quality (PDF, 2 Mb)
III. Other Concerns (PDF, 845 Kb)
References and Appendices (PDF, 727 Kb)

Full-sized document (PDF, 5 Mb)

Did You Know?

Painted Cave, Santa Cruz Island

Painted Cave on Santa Cruz Island is one of the world’s largest known sea caves. The cave measures 1215 feet in length (the size of more than four football fields), has a 160 foot entrance, and is almost 100 feet wide.