Glimpses of Three Coasts

by Helen Hunt Jackson

These places are doubly dowered. They have the wealths of the two zones, without the drawbacks of either. In South California this results from two causes: first, the presence of a temperate current in the ocean, near the coast; second, the configuration of the mountain ranges which intercept and reflect the sun's rays, and shut South California off from the rest of the continent. It is, as it were, climatically insulated,—a sort of island on land. It has just enough of sea to make its atmosphere temperate. Its continental position and affinities give it a dryness no island could have; and its climatically insulated position gives it an evenness of temperature much beyond the continental average.

It has thus a cool summer and a temperate winter,—conditions which secure the broadest and highest agricultural and horticultural possibilities. It is the only country in the world where dairies and orange orchards will thrive together.

It has its own zones of climate; not at all following lines parallel to the equator, but following the trend of its mountains. The California mountains are a big and interesting family of geological children, with great gaps in point of age, the Sierra Nevada being oldest of all. Time was when the Sierra Nevada fronted directly on the Pacific, and its rivers dashed down straight into the sea. But that is ages ago. Since then have been born out of the waters the numerous coast ranges, all following more or less closely the shore line. These are supplemented at Point Conception by east and west ranges, which complete the insulating walls of South, or semi-tropic, California. The coast ranges are the youngest of the children born; but the ocean is still pregnant of others. Range after range, far out to sea, they lie, with their attendant valleys, biding their time, popping their heads out here and there in the shape of islands.

This colossal furrow system of mountains must have its correlative system of valleys; hence the great valley divisions of the country. There may be said to be four groups or kinds of these: the low and broad valleys, so broad that they are plains; the high mountain valleys; the rounded plateaus of the Great Basin, as it is called, of which the Bernardino Mountains are the southern rim; and the river valleys or cañons,—these last running at angles to the mountain and shore lines.

When the air in these valleys becomes heated by the sun, it rushes up the slopes of the Sierra Nevada as up a mighty chimney. To fill the vacuum thus created, the sea air is drawn in through every break in the coast ranges as by a blower. In the upper part of the California coast it sucks in with fury, as through the Golden Gate, piling up and demolishing high hills of sand every year, and cutting grooves on the granite fronts of mountains.

The country may be said to have three distinct industrial belts: the first, along the coast, a narrow one, from one to fifteen miles wide. In this grow some of the deciduous fruits, corn, pumpkins, and grain. Dairy and stock interests flourish. The nearness of the sea makes the air cool, with fogs at night. There are many ciénagas, or marshy regions, where grass is green all the year round, and water is near the surface everywhere. Citrus fruits do not flourish in this belt, except in sheltered spots at the higher levels.

The second industrial belt comprises the shorter valleys opening toward the sea; a belt of country averaging perhaps forty miles in width. In this belt all grains will grow without irrigation; all deciduous fruits, including the grape, flourish well without irrigation; the citrus fruits thrive, but need irrigation.

The third belt lies back of this, farther from the sea; and the land, without irrigation, is worthless for all purposes except pasturage. That, in years of average rain-fall, is good.

The soils of South California are chiefly of the cretaceous and tertiary epochs. The most remarkable thing about them is their great depth. It is not uncommon, in making wells, to find the soil the same to a depth of one hundred feet; the same thing is to be observed in cañons, cuts, and exposed bluffs on the sea-shore. This accounts for the great fertility of much of the land. Crops are raised year after year, sometimes for twenty successive years, on the same fields, without the soil's showing exhaustion; and what are called volunteer crops, sowing themselves, give good yields for the first, second, and even third year after the original planting.

To provide for a wholesome variety and succession of seasons, in a country where both winter and summer were debarred full reign, was a meteorological problem that might well have puzzled even Nature's ingenuity. But next to a vacuum, she abhors monotony; and to avoid it, she has, in California, resorted even to the water-cure,—getting her requisite alternation of seasons by making one wet and the other dry.