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Title: Application of MAPS to the Salinas-Monterey Urban Study
Authors: Walski, Thomas M.
Gibson, Anthony C.
Keywords: Water-supply engineering--Costs
Water-supply--Mathematical models
Water-supply--California--Monterey Co.
Water-supply--California--Santa Cruz Co.
Publisher: Environmental Laboratory (U.S.)
U.S. Army Engineer Waterways Experiment Station.
Series/Report no.: Miscellaneous Paper (U.S. Army Engineer Waterways Experiment Station.) ; EL-79-4
Abstract: The MAPS (Methodology for Areawide Planning Studies) computer program, developed at the U.S. Army Engineer Waterways Experiment Station (WES), was used to evaluate the engineering aspects of alternative water supply plans for the Salinas-Monterey Urban Study conducted by the U.S. Army Engineer District, San Francisco. Using MAPS, the WES study team identified feasible water supply plans, developed staging for required facilities, and calculated capital and operation and maintenance costs for these facilities. The two counties in the study area, Santa Cruz and Monterey, were faced with different water supply problems, which were addressed using slightly different techniques, presented in the following paragraphs. In Santa Cruz County (except for the lower Pajaro area), water supply problems consisted chiefly of providing municipal water from an integrated system of surface and groundwater sources. MAPS simulations were used to identify potential diversions and reservoir sites to meet future needs. Source development was staged through the year 2020. Given three sets of population projections, Santa Cruz County was divided into three subareas for the purpose of the study - San Lorenzo, Aptos-Soquel, and Pajaro. Forty feasible alternative plans were identified and staged for these areas, alone and in regional systems. The WES study team then identified the required facilities and prepared schematic diagrams of the plans. MAPS was then used to calculate the capital and operation ·and maintenance costs of each of the facilities. The equivalent annual cost of each facility as a function of the year built was developed and the equivalent annual cost of each plan (under the base population projection) was determined. Methods for determining the equivalent annual costs for different population projections or water usage (e.g., conservation) are presented in the report. In Monterey County, irrigation represents the principal use of water, which is derived almost solely from wells. The U.S. Geological Survey developed a finite element groundwater model to identify the effect of different water use rates on the groundwater resources. From this study, six measures for storing and transporting water were identified. These measures were divided into the required facilities by the WES study team, which developed preliminary design and cost estimates using MAPS. Since the staging of the measures is not tied to population projections, the equivalent annual cost was calculated as a function of time so that economic analysis could be conducted for any year of construction.
Description: Miscellaneous Paper
Gov't Doc #: Miscellaneous Paper EL-79-4
Rights: Approved for Public Release; Distribution is Unlimited
Size: 132 pages / 5.169Mb
Types of Materials: PDF
Appears in Collections:Miscellaneous Paper

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