Maps and Charts
Appendix C, in 24 tabloid-size pages, contains the listing of the maps and
charts found during the data search for the "Humboldt Bay Entrance Study
Data Review." Appendix D contains tables indicating the abbreviations used for
the map and chart origins and primary and secondary sources (Table D1), the
map/chart format codes (Table D2), the map/chart type codes (Table D3), and the
map/chart location codes (Table D4), found in the listing.
One significant historical map that is not listed in this report is the 1806
Tebenkof (the draftsman) from the Jonathan Winship (sailing under a Russian
flagged fur trading ship) discovery of Humboldt Bay (Bay of Indians), and
described in Chapter 3, "History of the Engineering Projects," of this report.
The Map/Chart Table (Appendix C) entries have been purposely listed in a
manner as to preserve the historical significance of the map/chart, especially with
the map/chart title, origin, and ID columns of the listing. The map/chart titles are
listed, as exactly as possible, with abbreviations shown as they appeared in the
original. The origin abbreviations are listed, as exactly as possible, as it appears
on the map/chart. This may appear unnecessary at first glance. Almost all the
map/charts that appear in this listing are from Federal agency sources that not
only changed agency name and affiliations over time, but also in their name
changes reflect agency historical organizational shifts.
In addition, during the settling of the west and the organizational
development of establishing Federal agencies, the individual draftsmen working
in western offices often changed the agency name depending on the local favor at
the time. The map/chart origin history of Humboldt Bay is a fascinating topic in
itself as it is part of the history of civil works in United States, but, beyond the
scope of this report. The same consistency given to origin has been given to the
map/chart ID in the listing.
The history of the San Francisco District is also contained within this listing
and can be seen in the File: Division: Sheet notation in the Map/Chart ID
column in the Map/Chart Table. The first map sheet created under File: 5 Div:
4 Sheet: 1 is a 1904 map and the first USACE Harbor Lines for Humboldt Bay,
delineating the channel boundaries, and the pier and bulkhead boundaries for the
bay. The first map sheet created under File: 5 Div: 2 Sheet: 1 is the April 1991
Chart of the Entrance Channel of Humboldt Bay. The first map sheet created
under designation of File: 5 Div: 17 Sheet: 1 is a June 1925 map of Sea
Condition's at North Jetty Humboldt Bay, California, Jan 1st 1885 Dec 31st
Early Humboldt Bay nautical charting (1850) of the bay was conducted by
the United States Coast Survey, which is now conducted by the NOAA/NOS.
The USACE (then the War Department) began to regularly document the
condition of the Humboldt Bay entrance from about 1881, when stabilizing the
entrance became an imperative of the local citizens to maintaining the level of
trade and commerce needed to support the Humboldt Bay area.
The notes column of the Map/Chart Table indicates either important
features of the map/chart or points to the quality of the map/chart. About 90
map/charts have been copied and provided to the CIRP investigators in various
formats (black and white photocopy, blueprint, or Mylar copy) depending on the
Chapter 4 Inventory of Available Data and Data Sources