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TWEJVTY-EIGHTH ANNUAL REPORT

DRAINAGE DITCHES
The construction of the "A," "A-1" and "C" drainage ditches in the
vicinity of Bishop, having a combined length of 15 miles, together with
the deepening and widening of two miles of the old Longyear ditch along
Colling Road at the southerly terminus of the "A" Drain, was completed
in June of this year. These ditches are four feet wide on the bottom,
eighteen feet wide at the top, and have an average depth of seven feet.
They are excellently serving the two-fold purpose of draining a large
area of water-logged land and contributing to the water supply for the
Aqueduct. Their average combined discharge into the Owens River during
the last year has been approximately 25 second feet. This flow will be
materially increased during normal and wet years and is water which,
without the drains, would be lost by evaporation.
SEISMOLOGICAL STATIONS
In cooperation with the Carnegie Institute of Washington, Seismo-
logical Research Division, two buildings for the purpose of housing
seismographs, for recording earthquakes, have been constructed in the
Owens Valley during the year.
One station is located at South Haiwee Dam and another at Tine-
maha Dam. These stations will be equipped by the Carnegie Institute of
Washington, and are a step in line with the Institution's program of a
network of similar stations throughout Southern California.
ROAD CONSTRUCTION
The construction of 3500 lineal feet of road in the Soda Hill region,
and 4000 lineal feet of road leading to the south end of Pine Tree
Canyon Siphon, was completed during the year. Work was also started
in the construction of 3200 feet of road in Midway Canyon, between Pine
Tree Canyon and Mojave. The completion of these roads will make all
portions of the Aqueduct in the Mojave Division completely accessible
for maintenance and operation:
In cooperation with the County of Inyo, the Department has con-
structed about three miles of the proposed road from Carroll Creek to
Horseshow Meadows on Cottonwood Creek, and has contributed labor and
material to the value of $5,000.00 for construction of a road to Onion
Valley on Independence Creek.
TELEPHONE LINE
The construction of the new telephone line between Independence
and Fairmont has progressed during the year, the line being completed
as far south as Jawbone Canyon, with the exception of a short gap in
the Vicinity of Little Lake, where the right of way is still in question.
It is expected that this line will be completed to Fairmont by December
" j of this year.
INDEPENDENCE HEADQUARTERS
Occupancy of the new office building and warehouse at Independence
began the early part of this fiscal year. This building is a commodious
structure, of pleasing lines, and one which is not only a credit to the
Department, but adds another architectural unit to the increasing number
of such public buildings in Owens Valley.
Independence is now headquarters for all four divisions operating
in the Owens Valley, namely-Commercial Division, Owens River Aque-
duct Division, Land Division and Power Operating Division. The Branch
Headquarters at Lone Pine was abolished as such, in January of this
year.