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<br />Dr. John Liou <br />FEMA LMMP Studies - November 30,1992 Meeting Mirlutes <br />P~ge 2 <br /> <br />. Love & Associates, Inc. will obtain a copy of trll~ most recent USGS Open File Report to <br />check the regional aaalysis equations. <br /> <br />. The SOD-year discharge will be determined using a log-normal curve, not a Gumbel <br />frequency analysis. <br /> <br />. Th~ HKM HEC-2 model will be used for the hydraulic aaalysis. Love & Associates, <br />Inc. will prepare a letter to the low-bid surveyor requesting that cross sections be <br />surveyed up and downstream of the HKM study limits within the City of Billings aad to <br />spot check a couple of the HKM cross sections. We will also prepare a letter to the <br />cOllnty requesting them to survey cross sections outside the city limits. If more money is <br />nee:ded for the survey within the city limits, John Liou will aUlhorize the additional funds. <br /> <br />E; verdalle. Utah: <br /> <br />Love & Associates, Inc. will prepare a letter for survey bids. Only the chaarle1 portion of <br />the cross sections will be surveyed. The oVI~rbank elevation will be taken from aa <br />existing HEC-2 model. <br /> <br />. Th,: letter to the surveyors will state that the datum to be used should match that of the <br />Flcod Insuraace Study. <br /> <br />. Jobn Liou will supply a copy of the FIRM and FBFM maps for the City of Riverdale <br />(City) to us. <br /> <br />. We are silll waiting for written approval of the additional $2,000.00 contribution from the <br />City for field survey of the Weber River. <br /> <br />. John Liou wi.ll supply us with documentation regarding new FEMA flood zone <br />designations for areas behind levees. <br /> <br />. We will check the hydrology (Q100 = 7,000 cfs) for reasonableness. <br /> <br />[/loner Sloueh: <br /> <br />. We are currently waiting for aa up-to-date working SWMM model for the Cooper Slough <br />basin. <br /> <br />. UpDn receipt of that model we will continue our hydrologic analysis of combining our <br />generated hydl'Ographs to the Cooper Slough SWMM model. The Cooper Slough model <br />will be chaaged to a I-hour storm. <br /> <br />. For the hydraulic analysis we will tie the Cooper Slough floodplain to the Boxelder <br />floodplain (through 1-25) in the study reach. We will not, however, continue the <br />floodplain upstream of Vine Street unless we rel~eive additional funding from the County <br />or the State. <br />