Transcription of Lecture 7: Soils and Infiltration
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Lecture 7: Soils and Infiltration
Lecture 7: Soils and InfiltrationKey is a soil? are soil types classified? is Infiltration ? quantities control Infiltration rate? is soil is soil is capillarity?rain drop infiltrating into soilSoil type and thickness affect runoff and streamflowSoilis an unconsolidated aggregate of mineral and rock fragments ranging in size from clay, silt, sand, to gravel. Some Soils (near surface) also contain organic matter. Soil type (or classification) is determined by fragment (clast) size and distribution of clast SIZESSoil classification can get more descriptive, but for hydrology purposes we use clast Soil Texture Classificationrelative sizeFigure 1.
By Alan Goldin, Ph.D., Soil Conservation Service Washington State Department of Natural Resources United States Department of Agriculture, Soil Conservation Service. Digital soil data (for ArcGIS) is available from the following data base. Soil Coverage (USDA) Infiltration.
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