Stock ranges of northwestern California : notes on the grasses and forage plants and range conditions /
Year: 1902
Type: book
Abstract: Northwestern California as here denned includes the counties of Lake, Mendocino, Humboldt, Trinity, Del Norte, and the portion of Siskiyou lying west of the California and Oregon Railroad.It is approximately bounded by lines drawn at 39° and 42° north latitude, and 122° 30' and 124° 30' longitude west of Greenwich.(See Map I.) It is a fairly well-defined topographical area, bounded on the east by the inner Coast Range Mountains and on the west by the Pacific Ocean.It covers the whole, of the drainage basins of the Eel, Mad, Trinity, Lower Klamath, and Smith rivers and the smaller streams along the coast north of the Gualala River.On the south it extends beyond this naturally delimited area to include Lake County and the southern boundary of Mendocino County, thereby taking in the drain- age basin of Clear Lake and the headwaters of Russian River.AGRICULTURAL SUBDIVISIONS.This region is divisible into seven agricultural areas, which are more or less clearly marked topographically, climatically, and phyto- logically.The average dates of killing frosts are as follows: Last in spring, March 29 at Eureka, April 14 at Ukiah, and May 10 at Crescent City; first in autumn, November 1 at Ukiah, November 7 at Crescent City, and November 29 at Eureka.Precipitation.-The total annual rainfall is invariably heavier in this portion of the State than in any other.Even in the drought years of 1897 and 1898 the annual rainfall exceeded 50 inches at Crescent City and 40 inches over almost the whole of Humboldt Comity.In 1899 the maximum was 86.55 inches at Crescent City.The following table, based upon the Government reports, shows the precipitation that may be expected each month Normal monthly precipitation.Month.
Authors: Joseph Burtt-Davy, United States.
Language: English
Subfield: Ecology
Field: Environmental Science
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2486958909