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<br />File: PMPtopics799summary2.doc July 22, 1999 <br /> <br />orographic" values to sea leveL Was this map also used for its intended purpose, i.e. <br />moisture depletion? (Tomlinson) <br /> <br />The group agreed this question was answered. HMR 55A PMP values included moisture <br />barrier depletion. <br /> <br />11. The BOSS software package has demonstrated errors in its calculation of within storm <br />isohyetal values (personal communication, Ellen Faulkner, Mead and Hunt Engineering, <br />June, 1999). The software sometimes produces rainfall volumes larger than the PMP for <br />areas smaller that the PMS. Were tests conducted to demonstrate that this error did not <br />occur? (Tomlinson) <br /> <br />No longer applicable according to Dr. Tomlinson. <br /> <br />12. The chronology for the temporal variations were based on hourly percentage <br />contributions from PRHMR 52. Were these variations derivedfrom the same 29 storms used <br />to derive the within/without storm curves in HMR 52? How do they compare to the largest <br />storms which are transpositionable to the Cherry Creek drainage basin? Explicitly, what <br />other chronologies can be used, how would they be derived, and what criteria is used to <br />determine that they are permissible? (Tomlinson) <br /> <br />The group agreed this does not impact the hydrologic modeling of the Probable <br />Maximum Flood (PMF). <br /> <br />13. Paragraph 2 of the introduction states that" This study also supplements, to a limited <br />extent, NOAA Technical Memorandum, NWS Hydro 45..." What is meant by "limited <br />extent"? (Tomlinson) <br /> <br />The antecedent study applied some of the methodology from Hydro 45 and extended the <br />area. The group agreed this was a satisfactory answer. <br /> <br />14. The last sentence in the same paragraph state that "Most of the statistical relationships <br />developed for HYDRO 45 were not investigated in the present study due to time constraints': <br />What were the time constraints and what additional statistical relationships would have been <br />performed had the time constraints not been present? (Tomlinson) <br /> <br />This referred to items done in Hydro 45 that were not needed for the (Cherry Creek) <br />antecedent study. The time constraints did not affect the quality of the study. The group <br />agreed this was a satisfactory answer. <br /> <br />15. The region within which storms should have meteorologically homogeneous <br />characteristics with storms that could occur over the Cherry Creek drainage basin is defined <br />on p2 of the study. The eastern most boundary of the region is 105.9 degrees West longitude. <br />In comparing this eastern limit with the 29 storms in deriving the withinlwithout storm <br />curves in HMR 52, there is no overlap. This appears to be stating that any storms east of <br /> <br />3 <br /> <br />Topics and summary of 21 July 1999 Technical Meeting <br />