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<br />,~. <br /> <br />~!I" <br /> <br />Had adjusted rainfall amounts from the Springbrook storm been closer to or exceeded other <br />adjusted rainfall amounts, a detailed evaluation of the storm characteristics would have been <br />completed to determine ifthis storm that occurred 550 miles north of the Cherry Creek drainage <br />basin was indeed transpositionable to the Cherry Creek location. The HMR 55A discussion on <br />page 26 indicates that there was a "sparsity of measurements" that resulted in a very circular <br />shape to the isohyetal pattern. Potentially this analysis could produce rainfall values over <br />various area sizes that are too large. A reanalysis of the isohyetal pattern may be desirable. <br /> <br />27. Appendix G, Response to Schreiner Additional comment 1. Has the response been <br />prepared? <br /> <br />A W A response to Ouestion 27. <br /> <br />The following statement was included in the Final Report PowerPoint presentation: <br /> <br />Mr. Schreiner states that barrier moisture depletion adjustments were applied in the HMR 55A <br />analysis and therefore should not be applied again to adjust the NWS PMP values. <br />If appropriate barrier adjustments were incorporated into HMR 55A, then an additional <br />adjustment should not be made. <br /> <br />In the A W A response to Mr Schreiner Review Comment in Appendix G ofthe Report, the <br />following statement is made: <br /> <br />"Mr. Schreiner states that barrier moisture depletion adjustments were applied in the HMR 55A <br />analysis and therefore should not be applied again to adjust the NWS PMP values. The explicit <br />barrier adjustments incorporated in the HMR 55A are not discussed in HMR 55A nor were they <br />explicitly discussed in the NWS FO! material. " <br /> <br />There is nowhere in HMR 55A that provides information on what barrier adjustments were <br />made for the Cherry Creek basin location. Using the inflow wind direction for the Cherry <br />Creek basin location shown in Figure 3,3, page 67, in HMR 55A and in Figure 3.17, page 30, of <br />the Final Report, the inflow wind direction can be from the northeast clockwise to southeast, <br />basically easterly, Figure 3.4 in HMR 55A shows the smoothed barrier elevation map used in <br />HMR 55A. An easterly inflow wind into the Cherry Creek drainage basin does not cross any <br />barriers using this smoothed map. Figure 2.2 provides elevations for important storms and adds <br />a "B" beside the elevation to indicate barrier elevation, Neither the Cherry Creek 1935 storm <br />nor the Plum Creek 1965 storm (the closest historic storms to the Cherry Creek drainage basin) <br />have a "B" annotation beside the elevation. Hence, is appears that no barrier adjustments were <br />applied to the Cherry Creek drainage basin location. <br /> <br />28, appendix G, Response to Doeskens Comment 6. Where is that data for the Big Elk <br />Meadows and Big Thompson storms? <br /> <br />A W A response to Ouestion 28. <br />