Download or read book Clear Lake Water Quality Data written by California. Department of Water Resources. Northern District and published by . This book was released on 1975 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Valuing Preservation and Improvements of Water Quality in Clear Lake written by Christopher Azevedo and published by . This book was released on 2001 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Clear Lake Water Quality Assessment Project written by Ray Hanowell and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Water Quality Study written by and published by . This book was released on 1972 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book AQUATOX Application of Clear Lake California Model Calibration on Blue green Algae Bloom and Nutrients written by Wen Yao and published by . This book was released on 2015 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: Clear Lake is the largest fresh water body in California. It has three arms: Upper Arm, Oaks Arm, and Lower Arm. Though each of them can be treated as an individual lake, the three arms still have similar phytoplankton bloom situations. Clear Lake keeps contributing to Lake County and surrounding region's economy as well as environmental and ecological locality. However, since the 1930's, cyanobacteria have been blooming at certain years. Since then, the government and the public have paid high attention on the reparation of water quality in Clear Lake. Notably, Clean Water Act (CWA) and Total Maximum Daily Loads (TMDLs) projects are vital water restoration proposals. Clear Lake watershed was selected as the one that should be paid attention to meet water quality standards. US Environmental Protection Agency (EPA) launched a collection of models called "TMDL Modeling Toolbox" for the purpose of developing TMDLs. Therefore, it is important to use efficient models to make Clear Lake realize water restoration target. AQUATOX is a comprehensive aquatic ecosystem model with good tested ecological risk methodology. Abundant model studies can be achieved due to the multiple functions in AQUATOX. However, the default Clear Lake study attached in AQUATOX package was roughly calibrated. The main purpose of this paper is to calibrate the AQUATOX Clear Lake model to maximally meet precision under the premise of achieving generality and realism. And then, through in depth study of Clear Lake water quality history and AQUATOX model, this paper proposes possible further studies about model application based on on-processing projects. Through analyses, this paper results as below: (1) Based on the attached study model of Clear Lake California in AQUATOX, this paper fixed values of site characteristic, boundary conditions and certain important state variables' parameters according to academic references and repeated model tests. The driving variables such as flow, temperature, light and nutrients are important to the precision of simulation. Sediment diagenesis sub model plays an important role on simulating nutrients peaks in the end of summer, especially for phosphate. Plus, cyanobacteria parameters are critical for the new model behavior since cyanobacteria biomass and nutrients are sensitive to that parameter changing. (2) After calibration, nitrate, phosphate and Blue-Green algae model outputs have great improvements. The modeled nitrate concentration has low values in summer about 0.2mg/l because of algae bloom, and then returns to peaks in winter around 0.6mg/l as the highest. Phosphate output falls close to zero in summer and hits peak at 0.3mg/l in the end of summer 1970, and then repeat similar trend each year. Blue-Green algae output starts to increase in May and keeps in a high concentration from 6 to 8 mg/l dry. The bloom period ends in October. Ammonia output stays at a low concentration under 0.1 mg/l. Bottom dissolved oxygen falls to zero in summer due to seasonal stratification. Both nutrients and algae model predication are in good agreement with observed data. (3) Multiple sensitivity and uncertainty analyses were run to achieve better parameter calibration results. Overlap test shows the relative bias (rB) value of phosphate and algae are both close to zero, but the one of nitrate hits 1 because of the relatively high nitrate concentration in summer. Nitrate, phosphate and algae all have F value close to 1. The test result with rB close to 0 and F close to 1 shows the modified model has good fitness to observed data. Also, the cumulative distribution test shows both nitrate and phosphate have D-stat value that is less than D-crit, which means these two model distributions are not significantly different with the observed data trend. Precise driving variables data are preferred if better accuracy was needed for the model running. Modeling lake stratification in summer and open the sediment digenesis sub model are essential to phosphorus simulation behavior.
Download or read book Clear Lake Water Quality Investigation written by California. Department of Water Resources and published by . This book was released on 1966 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Open file Report written by and published by . This book was released on 1980 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lake Berryessa Water Quality Monitoring Program written by J. H. Rowell and published by . This book was released on 1976 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Water quality data from 2002 to 2003 and analysis of data gaps for development of total maximum daily loads in the lower Klamath River basin California written by and published by DIANE Publishing. This book was released on with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Clear Lake and Algae Problem written by Suresh A. Gaonkar and published by . This book was released on 1970 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report summaries written by United States. Environmental Protection Agency and published by . This book was released on 1983 with total page 1584 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Clear Creek and Clear Lake written by and published by . This book was released on 1975 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Compilation of Water Quality Goals written by Jon Bruce Marshack and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report on Water Quality Assessment for Clear Lake Stabilization Project written by Golder Associates and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Special Scientific Report written by and published by . This book was released on 1969 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book River Water Quality Monitoring written by Larry W. Canter and published by CRC Press. This book was released on 2018-01-17 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this book is to present practical information on the planning and conduction of river water quality monitoring studies.
Download or read book Maintenance Dredging Clear Creek and Clear Lake Texas written by United States. Army Engineer District, Galveston and published by . This book was released on 1975 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
