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<br />". <br /> <br />0025)8 <br /> <br />MROPD-P <br />Mr. Dan Merr:iman <br /> <br />10 September 1981 <br /> <br />We feel that an :important, relatively easy-to-use tool has been overlooked in <br />this study. Our Review Report for t)-,e Metropolitan Denver and South Platte <br />River and Tributaries Study, ,,!hich is referenced in your inter:im report, <br />presents an input-output model that may be very useful. It could be used to <br />place values on the multiple-use quantities for the monetary calculations. <br />Evaluation of the input-output matrices presented as plates 8-1 through 8-7 <br />in Volume IIIB of our report could provide insight on the potential for <br />undeveloped flow at various locations in the basin. For example, Ullder the <br />conditions assumed to develop the matrix, plate 8-3 indicates that 98,950 <br />acre-feet would have been available from the South Platte River at Chatfield, <br />6,450 acre-feet from Cherry Creek, and 19,230 acre-feet from Bear Creek in <br />1980 under drough.t cond:Lti ons . lJnrler ;:nl8rage caridi tiO~3 (plCttc 8...2) the <br />values would have been 131,360, 20,480, and 44,880 acre-feet, respectively. <br />Incidentally, the 6,450 acre-feet for Cherry Creek under drought conditions <br />supports our contention that Cherry Creek Reservoir does not have a dependable <br />yield of 15,000 acre-feet, as is stated on page 63 of your report. If you <br />would like to investigate the potential for the use of the input-output model <br />in your study we suggest you contact Dr. David Hendricks at Colorado State <br />University in Fort Collins (303-491-8273). The person on our staff who worked <br />with Dr. Hendricks to develop the model, Dr. Charles Turner, is now on the <br />staff at CSU, <br /> <br />You are also advised that development of any water resource projects will <br />likely require a Corps 404. penni t. If' any such project would have significant <br />environmental :impacts or be very controversial, then we would have to prepare. <br />an Environmental Impact Statement. Projects which hav," significant effects <br />on fish and wildlife resources would have to have mitigation features which <br />would satisfy state and Federal wildlife management agencies. <br /> <br />Please feel free to call w~. Roy McAllister of my staff (402-221-4632) if <br />you have any questions on our corrments. <br /> <br />)7er..e~;g:/. ' <br />{.(i;~f;{I.. " <br />.~ Xii/filL. O!.VJSEN <br />Chief, Planning Division <br /> <br />--~----~.'.---"- <br /> <br />2 <br />