A section can be further divided into halves, quarters, etc. Every section is numbered from 1 to 36, depending upon its position within the township. Each township is divided into 36 square-mile parcels of 640 acres, called "Sections". Chico is located in Township 23 north, Range 1 East, Mt. The east/west numbers are identified by the term "Range" and the north/south numbers are identified by the term "Township". Each Township is given a identifying number, according to where it falls. Along these lines the land was divide into 6 square mile blocks, called "Townships". Base lines run east/west and meridian lines run north/south. The Land Ordinance of 1785 devised a system base lines and meridian lines using to survey the western lands outside the initial 13 colonies. 1:100.000.įollowing is a short list of map scales. For a broad general view of a large geographical area you would use a map with a larger second number, i.e. For a close view that will give you the most detailed information of a small geographical area, choose a map with a small second number, i.e. When choosing a map, its intended use should be considered before deciding on which scale to use. Most geographical areas have been mapped at different scales. "Large is small" or the larger the second number the smaller the scale (detail) of the map. The first number is always '1' and the second number is different for each scale. One unit of measurement on the map represents 100,000 of the same unit of measurement on the ground. Map scales are usually given as a ratio, i.e. Scale is the relationship between distances on the map and distances in the 'real world'. This means that all the information must be shown proportionately smaller than it actually is. A map must also be a convenient and usable size. Maps must accurately show distance and location. If you add a "4" to the last digit = city.If you add a "3" to the last digit = county.If you add a "2" to the last digit = physical area.If you add a "1" to the last digit = subject.General, non-specific maps will end with the digit "0" (a few end in "5") This last digit can be modified to make the map more specific. The first set of four numbers following the "G" refers to the geographic location represented on the map. All cataloged maps begin with the letter designation "G". (Don't forget to always include the term "maps")Īnother way to find a cataloged map is to browse through the map drawers.Here is a short list of some of the most commonly used subject qualifiers: "California" "mines and mineral resources" "maps". To do this you may enter a subject category with the geographical location., i.e. However, you may want to limit your available resources. You will see a listing of all maps pertaining to California. The easiest method is to enter the geographic location (country, state, county, city, national park, region, river, etc.) i.e. You search for a map as you would search for a book. Many maps appear on the Library's catalog. These maps are shelved numerically according to their call numbers in the map cases. © 2018 California State Lands Commission - Permission is granted to any individual to copy and use this material as long as this copyright statement is included, no editing or alteration is made to the material, and the copies are not sold, licensed, or otherwise used for commercial gain.Note: not all maps in the collection are cataloged.Ĭataloged maps, like books, have a call number. The digitization of maps that are part of this collection was funded through a grant awarded to California State University, Fresno by the National Historical Publications and Records Commission. Maps smaller than/or equal 14 inches on the long side scanned at 1200 dpi maps 15-39 inches scanned at 600 dpi 40 inches or larger scanned at 400 dpi. Software - Nextimage and Adobe Photoshop CS4. Scanner - Contex SD3600 series and Contex HD5450 Plus Large Format A2 series. Morro Bay State Park, Rancho San Bernardo, T.30S,R10EĬalifornia-Maps San Luis Obispo County (Calif.)-Maps Record of Survey of a Portion of Lot 12, Rancho San BerNo Map Titlerdo and Portions of Sec 31,32, T.29S,R11E, Sec 5,6,T.30S,R11E, Sec 1, T.30S,R10E, Mount Diablo Meridian
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