Stormwater Management Master Plan - MSD

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Stormwater Management Master PlanWide valleys, broad rolling uplands, and highlands with deep, steep-sided valleys and narrowridge crests are common. Stream beds are of fairly uniform slope and side slopes are in aconstant state of change as lateral erosion increases.Elevations in Jefferson County vary from about 382 feet above sea level, which is the pool stageof the Ohio River below the McAlpine Lock and Dam, to in excess of 900 feet along thesouthern boundary. Selected elevations in Louisville are shown in Table 1.2.Table 1.2Elevations in LouisvilleLocationElevation(ft)Courthouse 462Iroquois Park 761Louisville International Airport 475Anchorage 720Coral Ridge 490Fern Creek 715Jeffersontown 711Kosmosdale 449Middletown 721Prospect 460Valley Station 4521.2.4 TopographyFour distinct topographic regions exist inJefferson County as listed below and shown inFigure 1.3.Flood PlainKnobsCentral BasinEastern UplandsThe “Flood Plain” is a strip of land borderingone-half to five miles wide along the OhioRiver. The Flood Plain extends from the SaltRiver in the southwest, north to downtownLousiville, and continues northeast to theOldham County line. The lowest elevations in theFlood Plain Region as seen from Iroquois ParkAugust 2010 Planning Methodology Page 6
FIGURE 1.3Topographic RegionsGeologic Cross Sectionof Jefferson CountyNO SCALE65CLARKSVILLEJEFFERSONVILLE716422NEW ALBANYST. MATTHEWS264LOUISVILLE60FLOODPLAINEASTERN UPLANDS64SHIVELY31WKNOBSCENTRAL BASINHIGHVIEW265OKOLONAVALLEYSTATIONFAIRDALE6531ETOPOGRAPIC REGIONSCopyright (c) 2009, LOUISVILLE AND JEFFERSONCOUNTY METROPOLITAN SEWER DISTRICT (MSD),LOUISVILLE WATER COMPANY (LWC),LOUISVILLE METRO GOVERNMENT, andJEFFERSON COUNTY PROPERTY VALUATIONADMINISTRATOR (PVA).All Rights Reserved.This is a product of MSD GIS Services and Records.J:\gis_records\project_mxd\WatershedMasterPlan\topographic.mxd
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Project DRI Phase 1Project List by
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