The cache is placed in the USGS Arbuckle Quadrangle in California.
It is a replacement for our archived Arbuckle Quadrangle which was
the twenty-fifth in our series of caches placed near the site for
which a USGS quadrangle map is named.
Arbuckle is a small Sacramento Valley town in Colusa County. It
is split by I-5 which does a tricky little S-curve maneuver as it
goes through town. The area around Arbuckle is agricultural land
with both annual crops and orchards.
You can access this cache using northbound exit 566 or southbound
exit 567. It is located just off the northeast corner of
town.
The Arbuckle Quadrangle boundaries are:
N 39º 00’ 00” and N 39º 07’ 30”
and
W 122º 00’ 00” and W 122º 07’ 30”.
The United States Geological Survey (USGS) has many missions. At
one time, a major mission of the USGS was the supplying of
topographic maps of the United States on several scales. Our cache
series is based on the 7½-minute quadrangle series.
The term quadrangle is used, instead of quadrilateral or rectangle,
because the four sides of these regions are curved. The USGS
divided the United States into quadrangles that are 7½ minutes by
7½ minutes. Since a degree is divided into 60 minutes, a quadrangle
one degree by one degree contains 64 of these
quadrangles.