Petaluma and Napa Creeks California.
1861 (dated) 31.5 x 22 in (80.01 x 55.88 cm)
1 : 30000
This is an uncommon 1861 U.S. Coast Survey nautical chart or map of the Petaluma River and the Napa River in California. Essentially two maps on the same sheet, the left hand side of the sheet features a chart of the Petaluma Creek from Petaluma City as it empties into the San Pablo Bay. The chart on the right features the Napa Creek from Napa City. The southern part of the Napa Creek as it empties into the San Pablo Bay between Mare Island and Vallejo is included in an inset near the bottom border and feature the Mare Island Straits. The straits, which are the mouth of the Napa River, are today popular for recreational boating and water sports.
The map offers excellent inland detail to the level of individual buildings, especially in Petaluma City, Napa City and in Vallejo and the Naval Yard. It also notes towns, roads, and inlets. Nautically this map offers a wealth of practical information for the mariner, including countless depth soundings and notes on tides, soundings and undersea dangers.
The triangulation for this chart was accomplished by G. A. Fairfield and A. F. Rodgers. The topography is the work of A. F. Rodgers and the hydrography was completed by a party under the command of James Alden. The entire work was produced in 1861 under the direction of A. D. Bache, Superintendent of the Survey of the Coast of the United States and one of the most influential American cartographers of the 19th century. Issued in the 1861 edition of the .
The Office of the Coast Survey, founded in 1807 by President Thomas Jefferson and Secretary of Commerce Albert Gallatin, is the oldest scientific organization in the U.S. Federal Government. Jefferson created the "Survey of the Coast," as it was then called, in response to a need for accurate navigational charts of the new nation's coasts and harbors. The spirit of the Coast Survey was defined by its first two superintendents. The first superintendent of the Coast Survey was Swiss immigrant and West Point mathematics professor Ferdinand Hassler. Under the direction of Hassler, from 1816 to 1843, the ideological and scientific foundations for the Coast Survey were established. These included using the most advanced techniques and most sophisticated equipment as well as an unstinting attention to detail. Hassler devised a labor intensive triangulation system whereby the entire coast was divided into a series of enormous triangles. These were in turn subdivided into smaller triangulation units that were then individually surveyed. Employing this exacting technique on such a massive scale had never before been attempted. Consequently, Hassler and the Coast Survey under him developed a reputation for uncompromising dedication to the principles of accuracy and excellence. Unfortunately, despite being a masterful surveyor, Hassler was abrasive and politically unpopular, twice losing congressional funding for the Coast Survey. Nonetheless, Hassler led the Coast Survey until his death in 1843, at which time Alexander Dallas Bache, a great-grandson of Benjamin Franklin, took the helm. Bache was fully dedicated to the principles established by Hassler, but proved more politically astute and successfully lobbied Congress to liberally fund the endeavor. Under the leadership of A. D. Bache, the Coast Survey completed its most important work. Moreover, during his long tenure with the Coast Survey, from 1843 to 1865, Bache was a steadfast advocate of American science and navigation and in fact founded the American Academy of Sciences. Bache was succeeded by Benjamin Pierce who ran the Survey from 1867 to 1874. Pierce was in turn succeeded by Carlile Pollock Patterson who was Superintendent from 1874 to 1881. In 1878, under Patterson's superintendence, the U.S. Coast Survey was reorganized as the U.S. Coast and Geodetic Survey (C & GS) to accommodate topographic as well as nautical surveys. Today the Coast Survey is part of the National Oceanic and Atmospheric Administration or NOAA as the National Geodetic Survey.
Report of the Superintendant of the United States Coast Survey, Washington, (1861 edition).
Very good. Minor wear and toning along original fold lines. Minor foxing. Professionally flattened and backed with archival tissue.