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<br />i. <br /> <br />6. In Table 111-12, are rates given in $ per 1,000 gallons? <br /> <br />7. In Chapter IV, are there any conclusions to be drawn from the water rights <br />information presented? <br /> <br />8. On pages IV -19 and IV -20, a schematic diagram or map would be helpful in <br />understanding the relative locations of the gaging stations and other facilities <br />described. <br /> <br />9. Under Method I basin yield estimates on pages IV-19 through IV-21: <br /> <br />a. How closely does the period of record at SWGS-OI (1982 to 1993) correspond <br />to the average runoff for this part of the Colorado River Basin? Are these <br />above average years? <br /> <br />b. How was the data for those years on Plateau Creek obtained? I was unable to <br />locate Plateau Creek records in the USGS Water Supply Data for Colorado. <br /> <br />c. Why was a statistical correlation between SWGS-OI and the other gaging <br />station records not done? <br /> <br />10. Under the Method 2 basin yield estimate on pages IV-21 and IV-22, a little more <br />explanation of the information in the Leonard Rice tables and figures and of the Rice <br />methodology would be helpful. How many years of record were included in the <br />analysis? <br /> <br />II. There are apparently a number of errors as well as some questionable conclusions in <br />the comparisons of basin yield on pages IV-22 through IV-24: <br /> <br />a. The next to the last paragraph on page IV -22 indicates that Method I results in <br />an estimated (average-year?) yield of 1,921 acre-feet per year for the upper <br />basin using a factor of 73 percent. Applying the 73 percent factor to 3,410 <br />acre-feet does not give 1,921 acre-feet. <br /> <br />b. On pages IV-22 and IV-23, is the Rice dry-year to average-year ratio = 0.73 or <br />0.80? Both are given. <br /> <br />c. The dry-year to average-year ratio on page IV -23 appears to be incorrect (if it <br />is the average of 0.80 and 0.39) and, in my opinion, is an arguable combination <br />of two different methodologies. <br /> <br />d. The second paragraph on page IV -23 states that "Method I will provide the <br />more accurate estimate of average year yield". This may not be true if the <br />period of record for Method 1 was a series of exceptionally wet years. <br /> <br />-2- <br />