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City of Santa Ana Emergency Operations Plan <br />Part I Basic Plan <br />Figure 12 City Location and Borders within Orange County <br />° ' " <br />N ` <br />Orange County <br />g�E'`" <br />"°"" _ <br />Cities 2018 <br />-lALE1t1OM <br />YOgE.At <br />MEEi1lN <br />UP.4Mi <br />BJEW <br />` <br />MFR <br />M1VB1 <br />ETFEBG <br />�„U <br />im <br />Eowrow <br />P� <br />PoYersckCwmfy <br />,�wrtes <br />awwGE <br />' <br />�Y <br />GWCEV GTNE <br />:. . NFHti181Hi <br />BE1EX <br />. <br />SWL, AW <br />lUBTM <br />.WN..G3PoHAiEJ <br />POWLW <br />LLLLIEY <br />11JNT�IGIGX <br />� WgI.A <br />� <br />EI4� <br />UME <br />Ptl1EHf <br />MRYPGRfEIpI <br />'�.YUlA <br />UGVIN V654M MW3 <br />wOCGS NFIJ <br />H180 UWIN <br />YEJG NWS <br />LAGIIIN <br />BFAGI <br />UGI <br />IUG116' <br />WIIWN <br />UPBIPNp <br />— <br />GW� <br />PoM <br />6lN <br />CLEMEME <br />Sandbyp <br />rOO�f <br />I.mCb[a�gt RmN <br />lafYtlE 9!l IINv W. FLLffirt <br />.beJIDIB <br />The City is almost completely developed and any new development will largely consist of redevelopment and <br />infill development on remaining vacant and underutilized parcels. Streets are laid out in a north -south and east - <br />west grid pattern. Santa Ana Police Department divides the City into quadrants with the intersection of I" Street <br />and Flower Street as the center -point. East and West 1" Street divides the northern and southern halves of the <br />City, and Flower Street divides the eastern and western halves, creating the Northeast, Southeast, South Coast <br />(southwest) and West End (northwest) districts (see Figure 21 below). <br />Topographically, the City consists of a flat, low-lying plain approximately 135 feet above sea level with little <br />elevation change throughout the City. The Santa Ana River, a 96-mile long waterway and the largest river in <br />Southern California, runs through the City and serves as the major drainage channel. The Santa Ana River is non - <br />navigable and mostly channelized (concrete -lined) and is usually dry or very low flowing, except during rainfall, <br />due to the construction of the Prado and Seven Oaks Dams to the northeast of Orange County. Nevertheless, <br />much of the City lies within the historic floodplain of the River and flooding is still possible during storm events <br />or dam failure. Santiago Creek, a major tributary, runs through the Cities of Tustin, Orange and Santa Ana and <br />provides water resources and drainage to the region. Santiago Creek is also low flowing except during rainfall, <br />but is not channelized and is susceptible to flooding or creek bed erosion during storm events. A number of 100- <br />year and 500-year flood plains are located in the City.' <br />' GP Land Use Element; Ped Bike Master Plan <br />12 <br />