Sediment Intrusion into the Substrate of Gravel Bed Streams

by C. V. Alonso, USDA Agricultural Research Service, Fort Collins, CO, USA,
C. Mendoza, USDA Agricultural Research Service, Fort Collins, CO, USA,
G. Q. Tabios, III, USDA Agricultural Research Service, Fort Collins, CO, USA,



Document Type: Proceeding Paper

Part of: Water Forum '86: World Water Issues in Evolution

Abstract: A physically-based model was developed to simulate the intrusion of fine sediments into stream gravel substrates and its effects on intragravel flow. The model is capable of simulating sediment intrusion of different particle sizes, and incorporates the influence of stream hydraulics, substrate matrix composition, intragravel velocities, and sediment settling. The individual model components and their mutual interaction are discussed. Results of a test run demonstrate that the proposed model exhibits the expected response.

Subject Headings: Sediment | Substrates | Hydraulic models | Mathematical models | Bed materials | Streamflow | Simulation models

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