SHASTA ROUTE SEATTLE TO SAN FRANCISCO, 77 



by it has formed the Knights Landing Ridge, an elevation hardly 

 scernible to the eye, which separates the Colusa Basin from a 

 similar depression to the south known as the Yolo Basin. The 

 fertile soil of the Yolo Basin is underlain by coarse gravel from which 

 large supplies of ground water are obtained. 



The largest pumping plant in the valley, the St. Louis plant of 

 the Sacramento Vallev Susrar Co., is near Yolo. It consists of 12 

 wells connected with an electrically driven 15-inch centrifugal pump 

 having a capacity of 7,000 gallon: a minute. From this plant 1,200 



acres were irrigated in 1913. 



Woodland Csee sheet 12. n 



80) is the seat of Yolo County and one 

 of the oldest and richest towns in the valley. Irri- 

 Woodland. gation was begun here in 1856 by diversion from 



through the Moore ditch. The system 



Eleyation 60 feet. 

 Population 3,187. 

 Seattle 845 miles. 



w 



Co., which irrigated 23,000 acres in 1913. In that 



year a})out 7,000 acres east and north of Woodland 



to sugar beets. 

 From Wood 



to Davis, where the Shasta Route joins the route from Omaha by 



way of Ogden and Sacramento to San Francisco. 

 Davis. To the east is the Icrel expanse of Yolo Basin, 



Elevation 42 feet. whero yearly flooding jorevcnts the growth of all 

 SeTtuet^r^fi?^, . except tule {Sdr^us hcustris) and coarse grasses. 



hills 



ali 

 country 



vium. Near Davis is the large farm of the University 

 lia used for experimental and educational purposes. The 

 1 this vichiity is an almost flat plain near sea level, but 



nevertheless high enough to provide drainage. With its rich fields 



of grain and orchard patches it has a decidedly prosperous look. 



Beyond Davis the Coast Range becomes more prominent, especially 



^ it, ahead of the train, showing as a low, dark ridge broken 



by one or more gaps. VaUey and live oaks are again a common 



feature through the fields. 



Along the Pacific coast, from the vicinity of Santa Barbara on the 

 south to Humboldt County on the north, the Coast 



Valley 



They are broken by the 



one great gap by which the combined Sacramento and San Joaqum 

 rivers find outlet into the Bay of San Francisco. The Coast Ranges 

 are geologically the most recent of the great structural features of the 

 State. They are largely built up of folded and crushed Cretaceous, 

 Jurassic, and Tertiary sedimentary rocks, which are in places broken 

 through by andesitic and basaltic lavas and by older igneous rocks 

 (diabase and other dark, heavy rocks, in part altered to serpentme). 



1 By way of main line; 881 miles by way of Marysville branch. 



