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Feasibility Evaluation of the Arkansas Valley Pipeline <br />Water Works! Committee <br />June 2003 <br />Section 3 - Engineering Evaluations <br />3.1 Water Demand Analysis <br />3.1.1 Data Collection and Review <br />Data collection efforts completed for the study included: <br />• Preparation of a survey form that was mailed to entities participating in the study. <br />• Acquisition and review/updating of the population and water demand projections <br />from earlier studies, particularly the Future Water and Storage Needs Assessment <br />(GEI, 1998). <br />• Acquisition of 2000 Census data assembled by the state demographer and the <br />Southern Colorado Economic Development District (SCEDD). <br />• Review and summarization of responses to the surveys sent to participating entities. <br />(A sample of the survey form is included with this report as Appendix B.) <br />The survey form was supplemented by direct contacts with participating entities that did not <br />respond and several entities not participating in the study but having future water demand <br />that could materially impact the sizing of the pipeline (e.g., Fowler and Las Animas). Of the <br />27 participants with direct municipal water supply responsibilities, 20 responded to the <br />survey form. The entities that responded to the survey represent approximately 80 percent of <br />the future (year 2020) water demand potentially served by the Arkansas Valley Pipeline. <br />Key data obtained from the survey are summarized in Table 3.1. In addition to water supply <br />and demand data summarized in Table 3.1, the survey also posed questions about current <br />water quality issues, treatment processes, and future water treatment plans. <br />3.1.2 Population Forecasts <br />Population projections for the Lower Arkansas River Basin were assessed by comparing <br />countywide projections from various sources. The countywide projections were then <br />disaggregated to the local level, based on methods used in the Water Needs Assessment <br />(GEI, 1998). Forecasts of population were assembled for each county from several sources <br />and the results are summarized in Table 3.2. <br />GEI Consultants, InC. 01284 03-0630 Feasibility Evaluation Flnai <br />