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Southern Hardpan Terraces

Ecoregion in Central Valley, CA

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The Southern Hardpan Terraces ecoregion is on very gently sloping terraces, floodplains, and alluvial fans along the eastern edge of the San Joaquin Valley. Elevations range from 150 to 500 feet. Ecoregion 7d is warmer and drier than the Northern Terraces ecoregion (7a) to the north. Soil temperature regimes are thermic and soil moisture regimes are xeric, nearing aridic in the south. Common vegetation includes annual grasslands, ceanothus shrublands, blue oak savannas, and scattered foothill pines in the draws and protected slopes. Vernal pools are common. Streams drain to the San Joaquin River or the San Joaquin Valley closed basins.

— EPA

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Ecoregion