Ground-water levels in an alluvial plain between the Tanana and Chena Rivers near Fairbanks, Alaska 1986-93

Vertical Datum:National Geodetic Vertical Datum of 1929 (NVGD of 1929): A geodetic datum derived from a general adjustment of the first-order level notes of both the United States and Canada, formerly called Sea Level Datum of 1929.All altitudes in this report are referenced to the 1966 survey (U.S. Coast and Geodetic Survey, 1966). Numbering System For Wells:Three identifying numbers are assigned to each well: a field identifier, a site identification number, and a local number.' The field identifier is a short name assigned to each well for the purposes of this or other projects.This number was used in field notes and maps and is used on the maps and in the text of this report.The site identification number is 15 digits long and is used to identify the site in a nationwide Ground-Water Site Inventory database.The local number is used to organize well information by each well's location and is based on the township, range and section number in which the well is located.The first two letters indicate the principal meridian and the quadrant formed by the intersection of a base line and a principal meridian.The first three digits indicate the township in which the well is located, the next three digits the range, and the next two digits the section.Letters following the section number indicate the quarter section, the quarter-quarter section, and so forth to the fourth-order quarter section.Each of these subdivisions is lettered counterclockwise from the northeast corner, which is assigned the letter "A."Each well within the smallest order of subdivision is then given a sequential number.Finally each well within a section is assigned a sequential map number using the last three digits.For example, FAOO100225ACCC1 005, indicates the Fairbanks meridian (F), the northeast quadrant (A), township 1 north, range 2 east, section 25; the well is in the southwest 1/4 (C) of the southwest 1/4 (C) of the southwest 1/4 (C) of the northeast 1/4 (A) of the section (ACCC).The 1 indicates that it was the first well assigned a sequential number in the fourth order quarter section.The next three digits, 005, indicate that this was the fifth well located or plotted on a map in that 1-square-mile section.