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Last modified
1/26/2010 12:30:45 PM
Creation date
10/11/2006 10:21:34 PM
Metadata
Fields
Template:
Water Supply Protection
File Number
8142.700
Description
Trinidad Project - Annual Operating Plans and Reports
State
CO
Basin
Arkansas
Water Division
2
Date
12/1/1988
Author
US DoI BoR
Title
Review of Operating Principles Final Report
Water Supply Pro - Doc Type
Operating Principles/Plan
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<br /> <br />~~:l\) A reconstruction of the Trinidad Reservoir operation with the transfer of <br />water out of the Model right eliminated and with winter storage recorded <br />under the Model ri ght was performed to i dent ify the changes in water stored <br />that have occurred as a resu 1 t of these pract ices. Thi s reconstruction <br />showed the following changes in the amounts of water placed in storage: <br /> <br />Year <br /> <br />Annual Change in Water Storage in Trinidad Reservoir <br />Actual Operation Minus Reconstructed Operation <br /> <br />1979 <br />1980 <br />1981 <br />1982 <br />1983 <br />1984 <br />TOTAL <br />ANNUAL AVERAGE <br /> <br />1,054 A.F. <br />30,068 A.F. <br />- 8,634 A.F. <br />8,709 A.F. <br />6,274 A.F. <br />-13,616. A.F. <br />23,855: A.F. <br />3,976 A.F. <br /> <br />A month ly summary and exp 1 anat ion of the computat i on procedure are contai ned <br />in Appendi x 11. <br /> <br />The above fi gures reasonab ly represent the increase in water supply to the <br />District accomplished through these water rights administrationpracti~es. <br />Further analysis is required to determine the impact that these practices <br />had on the inflow to John Martin Reservoir. <br /> <br />F 0 11 owi ng di scuss i on with the States of Kansas and Colorado and the <br />Purgatoi re Water Conservancy Di stri ct, the methodology emp loyed in the 1961 <br />and 1964 operation studies was used to determine the impacts on the inflow <br />to John Martin Reservoir. A computer model was first developed to <br />reconstruct the 1961 study. The results of the computer model were com- <br />pared to the original 1961 study to verify the validity of the model. The <br />resu lts compared favorably and the mod.e 1 was judged to be sat i sf actory (see <br />Appendix III). . <br /> <br />The computer model and input data were. then modified to fit the parameters of <br />the 1964 study. The original 1964 study modified the 1961 study by changing <br />distribution of the water within the District and determining the bypasses on a <br />daily basis rather then a monthly basis. While the original 1964 study deve- <br />loped most of the information presented in the 1961 study, it did not determine <br />the effects on the inflow to John Martin Reservoir. However, the computer model <br />does calculate the impacts to the infloW to John Martin Reservoir using the cri- <br />teria contained in the 1961 study. Tt)is computer-based reconstruction of the <br />1964 study is hereafter referred to as! the baseline study. More detailed in- <br />formation on the computer program and calibration is contained in Appendix III. <br /> <br />The impact on the inflow to John Martin Reservoir during the 1979-84 review <br />period as a resu 1 t of the transfers out of the Model ri ght and the wi nter <br />storage under the direct flow rights was computed for three different sets of <br />assumptions, hereafter referred to as Case 1, Case 2 and Case 3. Under both <br />Case 1 and Case 2, the computation shows the difference in the actual inflow as <br />compared to what would have occurred ha~ the full 19,717 acres under the project <br /> <br />12 <br /> <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />
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