Simulating THM Formation Potential in the Sacramento Delta. Part II
Publication: Journal of Water Resources Planning and Management
Volume 118, Issue 5
Abstract
An existing numerical hydrodynamics and water‐quality model was employed to simulate trihalomethane (THM) precursors and salinity transport in California's Sacramento‐San Joaquin Delta. Using steady‐state assumptions and historically observed hydrologic and water‐quality boundary conditions, seven model scenarios were defined. These scenarios were defined to quantify the relative contribution of THM precursors from a variety of sources at eight delta monitoring locations. Empirical relationships developed in a companion paper, bromine incorporation factor and bromine distribution factors, were employed to estimate bromide effects at each monitoring location. Model results, reported as THM formation potential (THMFP) concentrations, compared favorably with historical observations. Deviations between predicted and observed values were greatest at monitoring stations heavily influenced by agricultural drains, emphasizing the need for further data in that region. The analysis presented in this paper illustrates the numerical model's ability to be used as a planning tool in evaluating source‐water management alternatives with respect to THMFP in the delta.
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References
1.
Amy, G. L., Thompson, J. M., Tan, L., Davis, M. K., and Krasner, S. W. (1990). “Evaluation of THM precursor contributions from agricultural drains.” J. AWWA, 82(1), 57–64.
2.
Annual report of the Municipal Water Quality Investigations Program: Summary of monitoring results January 1990‐December 1990. (1991). California Dept. of Water Resour., Sacramento, Calif.
3.
Barnes, G. W., and Chung, F. I. (1986). “Operational planning for California water system.” J. Water Resour. Plng. Mgmt., ASCE, 112(1), 71–86.
4.
DAYFLOW program documentation and DAYFLOW data summary: Users guide. (1986). California Dept. of Water Resour., Sacramento, Calif., 1–25.
5.
“Delta and Suisun Bay water quality investigation.” (1967). Bulletin 123, California Dept. of Water Resour., Sacramento, Calif., 51–111.
6.
Delta Island drainage investigation report of the Interagency Delta Health Aspects Monitoring Program. A summary of observations during consecutive dry year conditions. Water Years 1987 and 1988. (1990a). California Dept. of Water Resour., Sacramento, Calif., 78–106.
7.
Delta Water Quality Issues. (1990b). Metropolitan Water District of Southern California.
8.
Fischer, H. B. (1972). “A Lagrangian method for predicting pollutant dispersion in Bolinas Lagoon, Marin County, California.” U.S. Geological Survey Paper 582‐B, U.S. Government Printing Office, Washington, D.C.
9.
Fischer, H. B. (1984). “Fischer Delta Model, Volume 2: Reference Manual.” Report HBF‐84/01, Hugo B. Fischer, Inc., Berkeley, Calif., 1–40.
10.
Hutton, P. H., and Chung, F. I. (1992). “Simulating THM formation potential in Sacramento Delta. Part I.” J. Water Resour. Plng. Mgmt, ASCE, 118(5), 513–529.
11.
“Methodology for flow and salinity estimates in the Sacramento‐San Joaquin Delta and San Francisco Bay.” (1991). 12th Annual Progress Report to California State Water Resour. Control Board, California Dept. of Water Resour., Sacramento, Calif., 5.1–5.3.
12.
Sacramento‐San Joaquin Delta water quality surveillance program—1988: Volume 1. (1990). California Dept. of Water Resour., Sacramento, Calif., 117–120.
13.
Salinity unit conversion equations. (1986). California Dept. of Water Resour., Sacramento, Calif., 1–29.
14.
Trihalomethane formation potential in the Sacramento‐San Joaquin Delta: Mathematical model development. (1991). California Dept. of Water Resour., Sacramento, Calif., 45–63.
Information & Authors
Information
Published In
Journal of Water Resources Planning and Management
Volume 118 • Issue 5 • September 1992
Pages: 530 - 542
Copyright
Copyright © 1992 ASCE.
History
Published online: Sep 1, 1992
Published in print: Sep 1992
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