In 1853, Derby arrived in the small outpost of
San Diego, California, to begin mapping the region and developing plans for redirecting the
San Diego River from the marshy delta of
San Diego Bay and directly into the Pacific Ocean with the
Derby Dike he had built. This was to avoid floods that periodically silted up the bay and made use of the bay by ships difficult or impossible. While waiting for approval of his San Diego River diversion plans, he had some time on his hands. He supplemented his low military pay by contributing humorous articles to the
San Francisco Herald,
California Pioneer magazine, and the fledgling local newspaper, the
San Diego Herald. He wrote articles that poked fun at the figures and pretenses of high society. These articles were written to appear as a running narrative from John Phoenix and were the state's first published humor. When another writer started writing articles with his pen name Squibob in a competing San Francisco newspaper, Derby wrote an article "killing off" Squibob and continued to write with a new pen name, John Phoenix. In 1855, Derby bought the
Herald, which went out of business in 1860. During this time he was promoted to
first lieutenant. == Personal life ==