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Stockton Basin

Ecoregion in Central Valley, CA

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The Stockton Basin ecoregion is a nearly level basin floor on the eastern edge of the Delta (7j). Nearly one-half of the ecoregion is urban and residential land of Stockton that covers most of the western part. To the east is cropland of corn, wheat, alfalfa, grapes, and walnuts. The soil temperature regime is thermic and soil moisture regimes are aquic and xeric. Vertisols are more common than in adjacent Ecoregion 7k. Winter ponding occurs. Natural vegetation historically included perennial and annual grasslands, valley oak savannas, cottonwoods, and willows.

— EPA

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