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I I I I il II I I I I I I I I I I I I I . . . ~r. Steven J. Witte August 8, 1997 Page 2 ,--.. , c~ November .......................................... 9.9% (:"\ December ......................................... 8.1% N January ......................................... 8.7% CO February 12.6% c....' ......................................... --J. March ......................................... 21.3% April .......................................... 29.1% May .......................................... 34.8% June ......................................... 42.0% July ......................................... 45.3% August .......................................60 38.7% September ......................................... 29.4% October ......................................... 20,1% I modified our computer program used for the JUly 10 submittal to mimic the H-I model's calculations of lateral sEle?age and secondary evaporation. The deep percolation and net seepage were routed back to the river by a response function developed using Glover techniques which is consistent with the procedure used by Kansas to develop response functions for the Colorado ditches. The results of our analyses are summarized in Table 1 which is similar in format to the summary presented In our July 10 submittal. On an annual basis, the stream depletions amount to about 64.6 percent of the river diversion, and the monthly values range from 0.9 percent in February to 82.8 percent in August The monthly values are very similar to the depletion rates presented in our July 10 submittal. In December and January, the retum flow exceeds the diversion, i.e., net gain in streamflow. These monthly volumes represent 4.5 percent of the sum of the stream depletions in the other 10 months. In our July 10 submittal, the December through February river gain averaged 5.0 percent of the stream depletions in the other 9 months. Also shown is the amount of consumptive use, attributable to on-tarm uses as a percent of the farm delivery. The consumptive use includes crop consumptive use, secondary evaporation associated with on-farm laterals and tail water, and change in soil moisture storage. The annual value averages 69.0 percent of the farm delivery, and the monthly values range from 63.7 percent In November to 70,0 percent in July. Until such time that a river gage is installed at the Highland Canal diversion dam, LAWMA's water will be delivered to the Purgatoire River through Wasterway No.3. Accordingly, these percentages would represent the consumptive use when delivering water through this wasteway. The values presented above and In Table 1 are not substantially clilferent from the values presented in our July 10 submittal, LAWMA has obtained owner&hip of 2,682 shares (about 71 percent of the outstanding shares) and anticipates putdtaslng 887 shares before next spring. At that time, LAWMA will own 3,569 shares out of 3.800 shares outstanding. The owner&, which have sold their shares . to LAWMA. have cflSCOntinued lITigation of the fields at the time of the closing, The purchase contracts have provisions for revegetation and dry-up, EJ~"^,~~ (~J)