188 REPORT OF THE CALIFORNIA EARTHQUAKE COMMISSION. 
direction. The valley is an old lake bed with ground water within 3 to 4 feet of the sur- 
face in April. (See plate 73B.) ; 
At Hemlock, 14 miles east of Ukiah, the shock, according to a report by Mr. C. D. L. 
Bowen, had two maxima, the second being the stronger. A rotary motion was felt, but 
no damage was done. 
CLEAR LAKE DISTRICT. 
For the Clear Lake district to the east of the Upper Russian River Valley, the follow- 
ing notes are from a report by Mr. C. E. Weaver: 
Hopland to Lakeport. — Nothing of importance was observed along the road from 
Hopland to Highland Springs. At the latter place one chimney fell. No cracks nor 
fissures could be seen. From Highland Springs to Lakeport no cracks were seen, and 
upon inquiry none were reported. The damage to buildings was slight; only a few chim- 
neys were thrown down. 
At Lakeport several brick buildings and one frame building were partly destroyed. 
A brick building was completely destroyed and most of the chimneys were thrown down. 
Many chimneys not actually thrown were twisted, and in every case the direction of the 
rotation was clockwise. All 6 chimneys of the high school building were twisted thru 
an angle of about 20°. Clocks in general stopt. No fissures nor cracks are reported or 
were found. The town is built on alluvium. 
Upper Lake. — The intensity of the shock is said to have been greater at Upper Lake 
than at Lakeport. There are, however, no brick buildings there, and only chimneys 
went down. No cracks nor fissures were formed. This town is also on alluvium. 
Laurel Dell. — A crack having been reported at Blue Lake, near Laurel Dell, Mr. 
Weaver visited the place, but found only a minor slide on the roadside. At Laurel Dell 
and Blue Lake Hotel chimneys fell. The first story of Laurel Dell Hotel, built of stone, 
was not affected. No cracks nor fissures were seen or reported between Upper Lake and 
Lakeport. 
Lakeport to Lower Lake. — Between Lakeport and Kelseyville, a distance of 9 miles, a 
few chimneys were down along the road. Houses are few, however. At Kelseyville, 
on a wide alluvial flat, brick buildings were somewhat damaged, and chimneys generally 
were down. The shock was reported to be of about the same severity as at Lakeport. 
The shock was described by residents as having had first a north to south motion, then 
east to west, then a twist. One mile south of Kelseyville and half a mile to the west, 
at the place of Mr. McLaughlin on the Lower Lake county road, a crack was found in the 
alluvium out of which gas escaped, burning upon ignition. About one mile north are 
gas wells in the same kind of rock, the gas being obtained by boring to a depth of 165 feet. 
About 3.75 miles south of Kelseyville on the road to Lower Lake, at the ranch of Mr. 
M. E. D. Bates, is a crack varying in width from 1 to 6 inches. It crosses the road about 
200 feet below the house. At the right of the road going south it crosses the creek and 
can be seen no further. At the left of the road it passes up the hill toward Uncle Sam 
Mountain for about a mile, but is not continuous. Near the road two small trees stand- 
ing on the crack have been partly uprooted and a fence post has been thrown out entirely. 
The rock thru which the crack passes is alluvium and a loose, unconsolidated conglomer- 
ate. It apparently does not pass thru the hard Franciscan rocks. In places there are as 
many as 10 parallel cracks, separated by intervals of 5 to 10 feet, which could be traced 
for only short distances. On the right side of the road, about 100 feet south of the 
cracks, stands a schoolhouse. It has been slightly tilted to the south. The chimney, 
made of terra cotta, is bent to the south. The chimneys on the house of Mr. Bates fell. 
On the side of Mount Konocti, several large loose boulders were caused to roll down, 
but no landslides nor cracks were observed. 
