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<br />-' <br /> <br />1~4 ruE 15:55 <br /> <br />P.16 <br /> <br /> <br />OU1238 <br /> <br />~ <br /> <br />vide the user with the capability to eotimate consumptive use for multiple years or single <br />e consumptive use model will operate using an ASClllnput file, <br /> <br />Subtask 2, Develop and test DMI software to link the consumptive use model with the databases. <br />Tbil subtnsk includes the portions of tbe DMI needed to support the prototype system f()r the <br />Gunnison River basin an4.identifies requirements for interaction with Tasks 1.06. 1.07. 1.08, and <br />1.10. Tbe DMldesign wih be based on the slJlndm:ds developed in Task 1.05. The OMI will be <br />designed to retrieve from the databases the consumptive use input requiremenlS that wore developed <br />in Phase I (see Task MellJ.ora.udum 1.l4-2), as well as any additional inputs identified in Phase IIa. <br />The data that are retrieved using the DMI will be written to an ASCII "flat file" that will be the input <br />to the consumptive use model. <br /> <br />Subtask 3, Design and develop the GUI for the consumptive use component, This subtask includes <br />the development of software to allow the user to nm the model interactively as well as display results <br />of the model. The model intcIface will be form- and menu-based to allow the user to view and <br />modifY...!!!!Linput data and make selections regarding options such as: time period, type of <br />consumptive use eauation, or location, <br /> <br />I~ ck/'n) <br />:. /r~;:'h.."- <br />V--O(' . 'j v~ "On <br /> <br />(P#M''''''~ . ,\ <br />/I'1o..h~1- ?/ <br /> <br />Subtssk 4. Develop a. Users' Manual for the consumptive use model. Development of this document <br />will be coordinated with Task 1.17 to be cousistent with other documentation efforts. J . L I (/. w <br />a, S CV'I!U-f:( ,0< U I- <br />~, "'d.ll~u;') <br />Subtask 5. Revise and enhance a model for the calculation of .gricultul'8l C<Jnsu ve use uSIDg a <br />monthly time step. The J:eCommendation based On the evaluation of the dilTere models (see Task <br />Memoranda L.l4-4 and 1.14-.5 for a description of the models excluded and Odels included in the <br />short list) i. to use the XCON2 model the USBR bas developed for the SCS' Blaney-Criddle method <br />and inC<Jrporate 0 I f the changes proposed to the USBR methods manual. 1- . _ -"'i!rt. <br />, <br />~arts of S will be incorporated into the CRDSS. Based OR ilie recommendations to the <br />USB see Appendu C) the following actions wDl be taken: <br /> <br />1 <br /> <br />. Compute the amOlmt and type of irrigated acreage using the spatial database <br />coveragcs for the Gunnison River ba.~in, This will provide an improved irrigated <br />acreage estimate to be used in the calculations. <br /> <br />/ <br />. Compute the amount of irrigated acreage for which the total irrigation <br />requirementa are not applied, this acreage is an important component in <br />calculating the amount of irrigation and is critical to estimate the amount of <br />irrigation water requirements, Four to seven diversion structures will be <br />identified, and the dlverslon record will be studied to evaluate the actual time <br />when the crops are not receiving a full supply of water, The purpose of this <br />evaluation is to dctermine if the USBR cutoff dales for the delivery of water to <br />the crops that do not receive the total irrigation requirement are appropriate or if <br />recommendations for new cutoff dates are necessary. No field WOlf< is expected <br />to be conducted as part of this effort, Where necessary. lITigation efficiency and / ) I <br />ClIDal loss volues generated from pxevious studies or numbers based on {7T>' <br />engineering judgment will be used as part 01 the anarysis. This task will dcpend <br /> <br />A215 05./4.94 <br /> <br />2-47 <br />