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the U.S. Navy. His photos offered a wonderful snapshot in time, but did not provide a quantifiable tool for calculating beach and bluff erosion rates. Later, the department would use high-resolution, vertical aerial photography that allowed more accurate estimates of beach and bluff erosion. In the early 2000s, Gary Griggs, Ph.D., Professor of Earth and Planetary Sciences and Director of the Institute of Marine Sciences at UC Santa Cruz, requested copies of George Armstrong’s early photos for his graduate students who were studying beach and bluff erosion. Dr. Griggs also wanted to place the photos in the campus library for future public use. Cal Boating was delighted to see this resource utilized, especially since another state agency had the desire to use and house the collection. In 2002, Dr. Griggs asked Cal Boating if Kenneth and Gabrielle Adelman could utilize the photo database for a 30-year time comparison on the popular California Coastal Records Project web site. The Adelmans had recently completed the same aerial photographic survey performed by George Armstrong years before. They restored the color balance of the original scanned images, which had faded over time, utilizing computer Photoshop methods and incorporated the photos into their web site (http://www. californiacoastline.org). Now, Cal Boating’s 1972 and 1979 aerial oblique photos can be accessed online and instantly compared to the high-resolution coastal images taken by the Adelmans in 2002 and 2005, providing photographic documentation of 33 years of coastal change in California. Clean and Green Boating Campaign Since 2004, Cal Boating has teamed with the California Coastal Commission (CCC) to promote the Clean and Green Boating Campaign. The “Clean and Green” campaign conducts boater education statewide in partnership with many public and private agencies that wish to instruct California boaters and marine businesses about environmentally sound boating practices. The campaign also supports the northern California and Sacramento- San Joaquin Delta chapters of the California Clean Boating Network (CCBN), originators of the Changing Tide Newsletter . This publication, first disseminated in 1998, has become the widely recognized voice

Cal Boating’s beach erosion control program funds measures to protect coastal public infra- structure and access. Picture depicts north San Diego County along Carlsbad Boulevard.

Reilly The Rainbow Trout was used in posters that the Clean and Green Boating program to promote clean boating practices and help ensure that clean boating is part of the experience on California’s waterways.

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50 Years: The Department of Boating and Waterways, 1957 to 2007