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r:-' II I , , , , , I I . I joint-use pool in the studies run over the 1925 through 1957 period instead of the 39,000 acre-foot joint-use pool actually constructed. Kansas also questioned showing bypasses for Ninemile and Highland Ditch Companies when no such bypasses had actually been made. In response to Kansas concerns, additional analyses were done for the 1979-84 revievJ period. Also, studies of the 1925-57 period were made with a 39,000 acre-foot joint-use pool and with no bypass for Ninemile and Highland. Following the April 27, 1988 meeting, both states and the District provided written comments on the second draft report. Copies of the comment letters are included in Appendix V. While extensive comments were again received, this round of comments dealt almost exclusively with the interpretation of the study results, the con- clusions and the recommendations. The methodology, data or other technical aspects of the studies contained in the second draft report were not seriously challenged by either state or the District in either the meetings or the written comments. Duri ng the April 27, 1988 meeting, the Bureau agreed to redraft the chapter on the administration of water rights and provide the redraft to the interested parties prior to issuing the final report. The redraft was mailed on October 28, 1988. In preparing the final report, the Bureau of Reclamation has carefully con- sidered all comments received since the review was initiated. The interpreta- tion of the study results, the conclusions and the recommendations include our consideration of the comments. A. Basic Data Basic data used in this report were compiled from many sources. Streamflow records of Purgatoire River flow at Madrid, below Trinidad Lake, at Trinidad and at Thatcher Gauges were obtained from U.S. Geological Survey published records or Division 2 Engineer records. These records were judged good except for winter periods. Trinidad Reservoir daily operation data summarized on a monthly basis were obtai ned from the Corps of Engi neers. These data i nc 1 ude reservoi r water sur- face elevation, storage content, computed evaporation, release, and computed inflow. It was noted at the February 5, 1987 meeting in Denver that the records prior to July 1981 did not reflect the most recent area/capacity tables and were in need of modification. As agreed, the Bureau reconstructed the reservoir storage con- tent, surface area, evaporation and inflow for the October 1979 thru June 1981 period to provide a consistent record based on the current area/capacity table. The reconstructed values are shown in Appendix II. Data after June 1981 were used as reported and considered to be of good quality. Certified copies of Trinidad Reservoir daily water accounting and diversion records for ditches under the District's administration were received from the Colorado State Engineer's Office. The reservoir water accounting records prior 8 -...-. ~