The position comes from measurement of the 1977 engineering survey
map and from the USGS 7.5' Lick Observatory topographic quadrangle.
Historically it is important to note that Kepler Peak has housed
at least 3 other water tanks previous to the ones extant in 1996.
Two of these were wooden, but another was brick.
There are still traces of a large rectangular brick and cement
tank which once occupied the center of the peak. The
foundation of the 150000 gallon tank is also brick, which may
indicate a previous tank.