Download or read book CE QUAL W2 written by Thomas M. Cole and published by . This book was released on 1995 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book CE QUAL W2 A Numerical Two Dimensional Laterally Averaged Model of Hydrodynamics and Water Quality User s Manual written by ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS ENVIRONMENTAL LAB. and published by . This book was released on 1986 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: This manual describes the two-dimensional, laterally averaged hydrodynamic and water quality model CE-QUAL-W2 and provides guidance in its use. The model was developed primarily for use in reservoirs but has applicability to lakes, rivers, and estuaries. The manual is organized into four major parts with several appendixes. In Part I, CE-QUAL-W2 is introduced to the reader by summarizing its major usages, attributes, and historical development. Part II addresses model capabilities, assumptions, and limitations and supplies the basic information required to use the model. Part III outlines in detail the structure of CE-QUAL-W2, including the basic model equations and solution procedures. Part IV provides additional details of data assembly, presents literature values of various coefficients and constants, and discusses how to calibrate the model and interpret output. The appendixes include: Appendix A, a description of various programming aspects; Appendix B, a glossary of variables and coefficients used in CE-QUAL-W2; and Appendix C, a description of the statistical and graphics routines.
Download or read book CE QUAL W2 A Two Dimensional Laterally Averaged Hydrodynamic and Water Quality Model Version 2 0 User Manual written by and published by . This book was released on 1995 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This manual describes and provides guidance for the use of CE-QUAL-W2 V2.O, a two-dimensional, longitudinal/vertical, hydrodynamic and water quality model. The model was originally developed by the Environmental and Hydraulics laboratories, U.S. Army Engineer Waterways Experiment Station, and is suitable for applications to rivers, lakes, reservoirs, and estuaries. Version 2.0 is a result of major code modifications that have improved the mathematical description of the prototype, computational efficiency, and utility of the model. The manual is organized into three chapters and four appendixes. Chapter (1) consists of an introduction to the model and the user manual. Chapter (2) describes the model's major capabilities and limitations. Chapter (3) provides an overview of the steps involved in applying the model including data preparation and model application. The appendixes provide the user with the information necessary to understand the model details. Appendix A describes the theoretical, numerical, and computational basis for the hydrodynamic portion of the model. Appendix B describes the theoretical and computational basis for the water quality portion of the model. Appendix C describes the preparation of input files. Appendix D describes the algorithms used in the code. An index is included in Appendix E. References include a partial bibliography of CE-QUAL-W2 applications.
Download or read book CE QUAL W2 Version 3 written by and published by . This book was released on 2000 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: CE-QUAL-W2 is a two-dimensional water quality and hydrodynamic code supported by the U.S. Army Enginer Research and Development Center (Cole and Buchak 1995). The model has been widely applied to stratified surface water systems such as lakes, reservoirs, and estuaries and computes water levels, horizontal and vertical velocities, temperature, and 21 other water quality parameters (such as dissolved oxygen, nutrients, organic matter, algae, pH, the carbonate cycle, bacteria, and dissolved and suspended solids). A typical model grid is shown in Figure 1 where the vertical axis is aligned with gravity.
Download or read book Development of a Calibration Model for CE QUAL W2 written by Shani Salomons and published by . This book was released on 2003 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ce Qual W2 written by James L. Martin and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Theoretical Basis for the CE QUAL W2 River Basin Model written by Scott A. Wells and published by . This book was released on 2000 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Improved algorithms in the CE QUAL W2 water quality model for blending dam releases to meet downstream water temperature targets written by Stewart Rounds and published by . This book was released on 2015 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Coupling the Hydrodynamic and Water Quality Model CE QUAL W2 with a Multi trophic Fish Bio energetics Model for Lake Roosevelt Washington written by Michael Lee McKillip and published by . This book was released on 2008 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Water Quality Modeling of J Percy Priest Reservoir Using CE QUAL W2 written by James L. Martin and published by . This book was released on 2000 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Water Quality Modeling of Lake Ogallala Using CE QUAL W2 Model to Support Total Maximum Daily Load Determination written by Laurel J. Kozimor and published by . This book was released on 2004 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of a CE QUAL W2 Temperature Model for Crystal Springs Lake Portland Oregon written by Norman Loris Buccola and published by . This book was released on 2016 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: During summer 2014, lake level, streamflow, and water temperature in and around Crystal Springs Lake in Portland, Oregon, were measured by the U.S. Geological Survey and the City of Portland Bureau of Environmental Services to better understand the effect of the lake on Crystal Springs Creek and Johnson Creek downstream. Johnson Creek is listed as an impaired water body for temperature by the Oregon Department of Environmental Quality (ODEQ), as required by section 303(d) of the Clean Water Act. A temperature total maximum daily load applies to all streams in the Johnson Creek watershed, including Crystal Springs Creek. Summer water temperatures downstream of Crystal Springs Lake and the Golf Pond regularly exceed the ODEQ numeric criterion of 64.4 °F (18.0 °C) for salmonid rearing and migration. To better understand temperature contributions of this system, the U.S. Geological Survey developed two-dimensional hydrodynamic water temperature models of Crystal Springs Lake and the Golf Pond. Model grids were developed to closely resemble the bathymetry of the lake and pond using data from a 2014 survey. The calibrated models simulated surface water elevations to within 0.06 foot (0.02 meter) and outflow water temperature to within 1.08 °F (0.60 °C). Streamflow, water temperature, and lake elevation data collected during summer 2014 supplied the boundary and reference conditions for the model. Measured discrepancies between outflow and inflow from the lake, assumed to be mostly from unknown and diffuse springs under the lake, accounted for about 46 percent of the total inflow to the lake. Model simulations (scenarios) were run with lower water surface elevations in Crystal Springs Lake and increased shading to the lake to assess the relative effect the lake and pond characteristics have on water temperature. The Golf Pond was unaltered in all scenarios. The models estimated that lower lake elevations would result in cooler water downstream of the Golf Pond and shorter residence times in the lake. Increased shading to the lake would also provide substantial cooling. Most management scenarios resulted in a decrease in 7-day average of daily maximum values by about 2.0-4.7 °F (1.1 -2.6 °C) for outflow from Crystal Springs Lake during the period of interest. Outflows from the Golf Pond showed a net temperature reduction of 0.5-2.7 °F (0.3-1.5 °C) compared to measured values in 2014 because of solar heating and downstream warming in the Golf Pond resulting from mixing with inflow from Reed Lake.
Download or read book CE QUAL W2 Hydrodynamic and Water Quality Model of the Cedar River Municipal Watershed written by and published by . This book was released on 2020 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: The laterally averaged, two-dimensional model CE-QUAL-W2 was used to develop a water quality model of the Cedar River Municipal Watershed as a reservoir management and climate change scenario tool. The 90,638-acre watershed, located 56 kilometers southeast of Seattle, WA, provides drinking water to over 1.4 million people. The watershed relies on two waterbodies for storage, Chester Morse Lake and the Masonry Pool. The Masonry Dam is the main storage structure in the watershed. The Cedar River flows downstream from the Masonry Dam for 57 kilometers to Lake Washington. The reservoir model simulated Chester Morse Lake and the Masonry Pool. The river model simulated the Cedar River from the Masonry Dam for 21 kilometers to the Landsburg Diversion Dam. Model inputs included bathymetric data, stream inflows and temperatures, outflows from the Masonry Dam, water quality constituent concentrations, and meteorological data. The system was modeled over two separate time periods: January 1, 2005 to December 31, 2008 and January 1 to December 31, 2015. Water level calibration was completed by comparing observed water surface elevations in Chester Morse Lake and the Masonry Pool. Flow calibration was completed by comparing streamflow gages in the Cedar River. Water temperature calibration used temperature data from twelve locations for the 2005-2008 model and six locations for the 2015 model. Water quality calibration used data from five locations for the 2005-2008 model and ten locations for the 2015 model. The model simulated water temperature on the hourly timescale with an RMSE of 0.60-0.65°C in the reservoir models and an RMSE of 0.48-0.71°C in the river models. The model simulated dissolved oxygen profile concentrations in Chester Morse Lake with an RMSE of 0.51-0.66 mg/L in the reservoir models and dissolved oxygen discrete sample concentrations in the Cedar River with an RMSE of 0.32-0.36 mg/L in the river models. Other water quality parameters were simulated within observed ranges for all parameters. Three climate change scenarios considered changes in meteorological data and inflow data. Two reservoir management scenarios considered changes in reservoir storage and spring refill level. The impact on fish habitat under each scenario was determined for the reservoir model and the river model.
Download or read book CE QUAL W2 Performance Assessment Modeling 1979 GRH Flume Study written by and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In an early review of numerical reservoir hydrodynamic models, the US Army Corps of Engineers developed a physical model at the US Army Waterways Experiment Station to assess the performance of modeling cold water underflow with numerous 2-dimensional and 3-dimensional numerical hydrodynamic models. Within this effort, the precursor for CE-QUAL-W2, the Laterally Averaged Reservoir Model, was defined and applied with limited success in representing the vertical velocity profile and outflow temperatures series collected from the physical model in the General Reservoir Hydrodynamics flume. CE-QUAL-W2 has since been modified from this early form in numerous ways including incorporation of higher order transport schemes, additional vertical turbulence algorithms and implicit solutions for effects of vertical eddy viscosity to note only a few of the hydrodynamic optimizations. Among these modifications, [the] model has undergone many other rewrites and additions to address emerging applications and higher order water quality constituent models that will not be addressed within this assessment. This research project investigates the performance of the current version (v4.5) of CE-QUAL-W2 in matching the experimental results [presented from] within the Technical Report documenting the physical study and model review.
Download or read book Automatic Calibration of Water Quality and Hydrodynamic Model CE QUAL W2 written by and published by . This book was released on 2014 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the most important purposes of surface water resource management is to develop predictive models to assist in identifying and evaluating operational and structural measures for improving water quality. To better understand the effects of external and internal nutrient and organic loading and the effects of reservoir operation, a model is often developed, calibrated, and used for sensitivity and management simulations. The importance of modeling and simulation in the scientific community has drawn interest towards methods for automated calibration. This study addresses using an automatic technique to calibrate the water quality model CE-QUAL-W2 (Cole and Wells, 2013). CE-QUAL-W2 is a two-dimensional (2D) longitudinal/vertical hydrodynamic and water quality model for surface water bodies, modeling eutrophication processes such as temperature-nutrient-algae-dissolved oxygen-organic matter and sediment relationships. The numerical method used for calibration in this study is the particle swarm optimization method developed by Kennedy and Eberhart (1995) and inspired by the paradigm of birds flocking. The objective of this calibration procedure is to choose model parameters and coefficients affecting temperature, chlorophyll a, dissolved oxygen, and nutrients (such as NH4, NO3, and PO4). A case study is presented for the Karkheh Reservoir in Iran with a capacity of more than 5 billion cubic meters that is the largest dam in Iran with both agricultural and drinking water usages. This algorithm is shown to perform very well for determining model parameters for the reservoir water quality and hydrodynamic model. Implications of the use of this procedure for other water quality models are also shown.
Download or read book Summary of Water Temperature Calibration for CE QUAL W2 Model of Shasta Lake California written by Laurel Saito and published by . This book was released on 1997 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Implementation of a Sediment Transport Model for CE QUAL W2 written by and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The CE-QUAL-W2 model, developed by Portland State University, simulates water quality and flow. Recommendations to expand on this model and have it include sediment transport are implemented in this report. Existing one-, two-, and three-dimensional models are reviewed and assessed for their sediment transport methodology. A laterally (width) averaged sediment concentration model is developed as an Upwind Center Space Scheme using CE-QUAL-W2 data. The scheme includes a method to calculate scour for sediment concentration and results of the model are shown for a simulated branch of the Spokane River.
