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Show Central Utah Water Conservancy District 355 WEST 1300 SOUTH OREM, UTAH 84058- 7303 TELEPHONE ( 801) 226- 7100 November 7, 1997 Mr. Keith Denos, P. E., Superintendent Provo River Water Users Association 1788 North State Street Orem, UT 84057 Reference: Response to PRWUA Comments on Draft Report on the Hydrologic Model Analysis of the Provo River Basin. Dear Mr. Denos: The Central Utah Water Conservancy District ( CUWCD) has received your comments dated May 21, 1997, on the above referenced report and respectfully offers the following response. The Provo River Water Users Association ( PRWUA) offered both general and specific comments on the report concluding that the PROSIM model was " woefully deficient" because of inaccuracies and failure to include key operating agreements, endangered species demands, and using monthly " average values" at each timestep. Your general concerns are addressed below in the following paragraphs. Your specific comments are also addressed in order. Where indicated, changed have been made in the final report. The first general comment concerns what PRWUA believes to be an apparent failure on the part of CUWCD and its consultant to include the provisions of the 1994 Deer Creek / Jordanelle Operating Agreement ( DC/ JOA) into the PROSIM model. All significant provisions of the DC/ JOA were included in the PROSIM model code and/ or data files to the extent that they are applicable to a monthly time- step, and we agree its inclusion in the model code and/ or data files was " absolutely essential to the integrity and usefulness thereof'. We acknowledge that indeed no explicit reference to the DC/ JOA was made in the Draft Report. However, the provisions of the DC/ JOA were integral to several of the items listed in section 2.4.3; namely, " diversion and conversion of system storage", " Deer Creek Reservoir Accounting", and " Jordanelle Reservoir Accounting". Although the report does not attempt to list all of the agreements, the model has incorporated, we agree that the DC/ JOA should specifically be mentioned. The final report will be modified to include specific reference to the DC/ JOA. We J:\ ENG\ CORT\ WPFILES\ PROSIM\ PRWUARES. WPD File Code: 1. B. 15.062. C0.640 |