First posted September 5, 2023 For additional information, contact: Director, Oregon Water Science CenterU.S. Geological Survey601 SW Second Avenue, Suite 1950Portland, 97204 Mechanistic models capable of simulating hydrodynamics and water temperature in rivers reservoirs are valuable tools for investigating thermal conditions their relation to dam operations streamflow river basins where upstr...

Setup, testing, and application of a 2-dimensional longitudinal–vertical hydrothermal/transport model (the transport submodel of CE-QUAL-W2) was documented for Cayuga Lake, New York, where the Rossby radius is on the order of the lake’s width. The model was supported by long-term monitoring of meteorological and hydrologic drivers and calibrated and validated using in-lake temperature measureme...

Abstract. Numerical models are an important tool for simulating temperature, hydrodynamics, and water quality in lakes reservoirs. Existing differ dimensionality by considering spatial variations of simulated parameters (e.g., flow velocity temperature) one (1D), two (2D) or three (3D) dimensions. The different approaches based on levels simplification the description hydrodynamic processes res...

PURPOSE: This technical note presents the results of incorporating a fish bioenergetics module into CE-QUAL-ICM, a spatially explicit eutrophication model. In addition to fish consumption of algae, zooplankton, and detritus, fish biomass accumulation and recycling to the water column are explicitly accounted for. Schools of fish are tracked individually, allowing for spatial resolution of their...

PURPOSE: This technical note presents the results of incorporating a fish bioenergetics module into CE-QUAL-ICM, a spatially explicit eutrophication model. In addition to fish consumption of algae, zooplankton, and detritus, fish biomass accumulation and recycling to the water column are explicitly accounted for. Schools of fish are tracked individually, allowing for spatial resolution of their...

Let V be a real unitary space and let W1, W2 be subspaces of V . The functor W1 + W2 yields a strict subspace of V and is defined as follows: (Def. 1) The carrier of W1 + W2 = {v + u; v ranges over vectors of V , u ranges over vectors of V : v ∈ W1 ∧ u ∈ W2}. Let V be a real unitary space and let W1, W2 be subspaces of V . The functor W1 ∩ W2 yields a strict subspace of V and is defined by: (De...

Wildfires are an increasing threat in the Mediterranean region, causing frequent losses of goods and human lives. Not only wildfires a concern due to their immediate effects on vegetation soil, but they can also have substantial impacts surface water quality. Approximately one-third world’s largest cities obtain drinking from forest catchments. The removal consequent runoff increase with high c...

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