20240814 21294300 1.0 FALSE BOPRC_Greater_Utuhina_Catchment_1_AEP_2130_FB_MaxDepth_banded 95.647 1879582.911000 1884856.911000 5771297.374800 5775931.374800 1 002 Projected GCS_NZGD_2000 Linear Unit: Meter (1.000000) NZGD_2000_New_Zealand_Transverse_Mercator <ProjectedCoordinateSystem xsi:type='typens:ProjectedCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/10.8'><WKT>PROJCS["NZGD_2000_New_Zealand_Transverse_Mercator",GEOGCS["GCS_NZGD_2000",DATUM["D_NZGD_2000",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",1600000.0],PARAMETER["False_Northing",10000000.0],PARAMETER["Central_Meridian",173.0],PARAMETER["Scale_Factor",0.9996],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0],AUTHORITY["EPSG",2193]]</WKT><XOrigin>-4020900</XOrigin><YOrigin>1900</YOrigin><XYScale>10000</XYScale><ZOrigin>0</ZOrigin><ZScale>1</ZScale><MOrigin>0</MOrigin><MScale>1</MScale><XYTolerance>0.001</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><WKID>2193</WKID><LatestWKID>2193</LatestWKID></ProjectedCoordinateSystem> 20240627 13581500 20240627 13581500 ISO 19139 Metadata Implementation Specification GML3.2 50000 5000 ISO19139 BOPRC_Greater_Utuhina_Catchment_1_AEP_2130_FB_MaxDepth_banded Feature Class 0 OBJECTID OBJECTID OID 4 10 0 Internal feature number. Esri Sequential unique whole numbers that are automatically generated. Shape Shape Geometry 4 0 0 Feature geometry. Esri Coordinates defining the features. DepthBand DepthBand String 50 0 0 Shape.STArea() Shape.STArea() Double 0 0 0 Shape.STLength() Shape.STLength() Double 0 0 0 SDP89185 Greater Utuhina Catchment Model (GUCM), 2022 Coordinate system  New Zealand Transverse Mercator 2000 Vertical datum  Moturiki Vertical Datum 1953 This map layer represents data from the Greater Utuhina Catchment flood study (a Bay of Plenty Regional Council contracted analysis) and shows a set of spatial data that indicate areas of land at risk of flooding from the Utuhina Stream, Mangakakahi Stream and Otamatea Stream. The GUCM deliverables depict and quantify the flood susceptibility from fluvial (riverine) flooding for the study area, e.g. the river channels are no longer able to hold the volume of water and breach the banks. All spatial data for this project provided in terms of NZGD2000 New Zealand Transverse Mercator 2000, horizontal datum. The vertical datum for maximum water levels is Moturiki Vertical Datum–1953. WARNING - this dataset will be referred to as the following for all Rotorua Lakes Council internal applications (in particular GeyserView) Source location: 89185_Greater_Utuhina_Catchment_Flood_Modelling_Ratified Dataset name BOPRC_Greater_Utuhina_Catchment_1_AEP_2130_FB_maxwl_Poly Proposed RDC name BOPRC_Greater_Utuhina_Catchment_1_AEP_2130_FB_maxwl G6 name Greater_Utuhina_Catchment 1% AEP 2130 FB Max Water Level (BOPRC) Dataset name BOPRC_Greater_Utuhina_Catchment_1_AEP_2130_FB_maxdepth_Poly Proposed RDC name BOPRC_Greater_Utuhina_Catchment_1_AEP_2130_FB_maxdepth G6 name Greater_Utuhina_Catchment 1% AEP 2130 FB Max Depth (BOPRC) https://www.rotorualakescouncil.nz/our-services/planningservices/districtplan/proposed-district-plan-research <DIV STYLE="text-align:Left;"><DIV><DIV>Regional Council has engaged Blue Duck Consultants and DHI Water and Environment Ltd to prepare a hydrological and hydraulic model, which combined we refer to as the Greater Utuhina Catchment Model (GUCM).The hydrological model (a Non-Linear Reservoir model) is intended for flood forecasting purposes and support design investigations within the catchment. The hydrological model calculates runoff from rainfall at 122 separate sub-catchments within the wider Utuhina Stream catchment. Stream flows from runoff are tracked through a network of routing branches to Lake Rotorua. DHI extended the existing 2014 hydraulic model of the lower Utuhina reach to include the Utuhina Stream and its tributaries (Mangakakahi Stream and Otamatea Stream) upstream of the urban environment. The hydraulic model does not explicitly include the Rotorua Lakes Council's stormwater pipe network. Inflow hydrographs, each representing the flow contribution from a sub-catchment, were derived from the hydrological model and applied as a point or distributed inflows to the hydraulic model. These two models were built and calibrated in unison for current land use and current climate change scenarios, following which climate change prediction were made to the year 2130.For further information refer to DHI “Utuhina - Phases 2 and 3 Numerical Modelling”, August 2021 and DHI “Utuhina – Additional Modelling and Mapping(Addendum Report)”, August 2022.Purpose of ModelThe GUCM has primarily been built to undertake a capacity review of the lower Utuhina Stream flood protection scheme and to assess the relative impacts of any potential flood mitigation measures on a catchment-wide scale. Its secondary purpose is to provide information on areas susceptible to fluvial (riverine) flooding for emergency planning, provide flood level advice in the vicinity of the streams, and provide boundary conditions for the stormwater network assessments.Limitation of dataThe data layers are generated from catchment level modelling based on the datasets, requirements and technology available at the time of model build.There are multiple sources of uncertainty in deriving these maps including:<UL STYLE="margin:0 0 0 0;padding:0 0 0 0;"><LI>The accuracy of gauging data and rating curves and associated estimated flood discharge for the chosen design events.</LI><LI>Hydrologic assumptions, including antecedent rainfall</LI><LI>The definition of floodplain topography and channel cross-sections.</LI><LI>The choice of effective hydraulic roughness coefficients.</LI><LI>The choice of the hydraulic and hydrologic models and their representation of the physics.</LI><LI>The treatment of floodplain infrastructure.</LI><LI>The consideration of the performance of flood defences.</LI><LI>The potential for non-stationarity processes arising from both catchment change (land-use and/or land management changes) and climate variability and/or change.</LI></UL>No detailed uncertainty analysis has been carried out. However, a freeboard margin (factor of safety) has been applied to the design flood levels to account for uncertainties. Areas of greater uncertainties received a greater freeboard margin for the design levels, such as the lower portion of the catchment.The flood maps shownarefluvial (riverine)flooding maps only, e.g. flooding from the streams but do not explicitly show flooding from direct localised rainfall or from pipe surcharges. Urban flooding from direct localised rainfall and from pipe surcharges are beyond this study and would need to be established by a suitable rain-on-grid model.As such, the design flood levels cannot solemnly relied upon for finished floor level determination within the urbanised subcatchment area as these areas may have other contributing (localised) factors that are not considered.</DIV></DIV></DIV> Bay of Plenty Regional Council Flood Model Greater Utuhina Catchment Greater_Utuhina_Catchment_BOPRC_1%AEP_2130_FB_maxdepth SDP89185 <DIV STYLE="text-align:Left;"><DIV><DIV>Before using this data, please note the use limitation:Bay of Plenty Regional Council (Regional Council) provides the data as a public resource of general information for use “as is” without warranty of any kind. Regional Council provides this information with the understanding that it is not guaranteed to be accurate, correct or complete and any conclusions drawn from such information are the sole responsibility of the user. Further, the Regional Council makes no warranty, representation or guaranty as to the content, sequence, accuracy, timeliness or completeness of any of the spatial or database information provided herein. While every effort has been made to ensure the content, sequence, accuracy, timeliness or completeness of materials presented within this dataset, the Regional Council assumes no responsibility for errors or omissions, and explicitly disclaims any representations and warranties, including, without limitation, the implied warranties of merchantability and fitness for a particular purpose. Regional Council recommends that you independently verify the accuracy, currency and reliability of any information upon which you intend to rely.The GIS data made available by Regional Council may be amended and updated by the Council without notification. The Regional Council shall assume no liability for: 1 Any errors, omissions, or inaccuracies in the information provided, regardless of how caused; or 2. Any decision made or action taken or not taken by user in reliance upon any information or data furnished hereunder. Use Restrictions: The included datasets shall NOT be redistributed, in any form, to any other parties, or used in any other projects, current or future, without prior consent of the Regional Council.</DIV></DIV></DIV> Version 6.2 (Build 9200) ; Esri ArcGIS 10.8.0.12790 BOPRC_Greater_Utuhina_Catchment_1_AEP_2130_FB_MaxDepth_banded 1 176.189274 176.251199 -38.119549 -38.162897 0 Feature Class dataset EPSG 7.9.4(9.0.0) Simple FALSE 0 TRUE FALSE 20240627 /9j/4AAQSkZJRgABAQEAAQABAAD/2wBDAAgGBgcGBQgHBwcJCQgKDBQNDAsLDBkSEw8UHRofHh0a HBwgJC4nICIsIxwcKDcpLDAxNDQ0Hyc5PTgyPC4zNDL/2wBDAQkJCQwLDBgNDRgyIRwhMjIyMjIy MjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjL/wAARCACFAMgDASIA AhEBAxEB/8QAHwAAAQUBAQEBAQEAAAAAAAAAAAECAwQFBgcICQoL/8QAtRAAAgEDAwIEAwUFBAQA AAF9AQIDAAQRBRIhMUEGE1FhByJxFDKBkaEII0KxwRVS0fAkM2JyggkKFhcYGRolJicoKSo0NTY3 ODk6Q0RFRkdISUpTVFVWV1hZWmNkZWZnaGlqc3R1dnd4eXqDhIWGh4iJipKTlJWWl5iZmqKjpKWm p6ipqrKztLW2t7i5usLDxMXGx8jJytLT1NXW19jZ2uHi4+Tl5ufo6erx8vP09fb3+Pn6/8QAHwEA AwEBAQEBAQEBAQAAAAAAAAECAwQFBgcICQoL/8QAtREAAgECBAQDBAcFBAQAAQJ3AAECAxEEBSEx BhJBUQdhcRMiMoEIFEKRobHBCSMzUvAVYnLRChYkNOEl8RcYGRomJygpKjU2Nzg5OkNERUZHSElK U1RVVldYWVpjZGVmZ2hpanN0dXZ3eHl6goOEhYaHiImKkpOUlZaXmJmaoqOkpaanqKmqsrO0tba3 uLm6wsPExcbHyMnK0tPU1dbX2Nna4uPk5ebn6Onq8vP09fb3+Pn6/9oADAMBAAIRAxEAPwD3+iii gAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKhu7qGytZbmdtsUa7mNADLrULSxeBLmdYmn fZHu/ib0qzXjWu+Kb7X0SOdY44o3LqkefoM88kc8+9dv4K8T/wBqW40+8f8A0yFflZjzKo7/AFHf 16+tAHXUUUUAFFFFABRRRQAUUUUAFFFFABRRRQAUUUUAFFFFABRRRQAUUUUAFFFFABXG/Ea5uItF hhjQGCaTErnqCOVH48/lXYSOscbSMcKoJJ9hXk3iXxSuu2kMH2d0aNywcS4BBJ4KdM9Oc/zoA5mp be4mtLiO4gkaOWM7lZeoNIC0qgMyhV7kdPbj+X196nsLf7VewQR27zu8gXaH2hs9unH1oA9d8N+I Idf04SjCXMeFmjHY+o9jWzXleg6ZrOmavdTQRt9qtEzLbnnzASPlyODlSSPcV6jE5khRyjIWUEo3 VfY+9AD6KKKACiiigAooooAKKKKACiiigAooooAKKKineSOIvGu8ryU7sO4HvQBLRUcU6T26Twnz I3UOhH8QPI61iW8+sR6skEdnO9k53SPdsmYwc8Kysc844I4x1wcgA36K43X/ABD4j0aVJX061Fnu G6RGaQH2zxj8qsP8QdEUHabhiI94/d8Fv7v1/T3oA6qmu6RozyMqIoyzMcAD3rjtW+INrbeUmmRC 8d13MzEqE4yBjHJ9fTFcxJ40vrh2eeNLjjKRy/6tG452jGcdtxPagDZ1/wAV2l3FqdkSDgIbOQx5 DH+L8D29QeeK4KR/NlZ9qruOdqjAH0Haprm4nN5cSNOHklLeY6Hh89fwzUCLvcDOB3PoKALFrbXF 88dpaRNLM+W2L1OB/QA/nXqfg7RP7J0tvOjU3DyFt5i2uBgDac89c/nXldtfz2V+LyzfyJVYlNvO 3PbnqPrXp3g3xO+twPbXjJ9siAORgeavrj1HfHqKAOqooooAKKKKACiiigAooooAKDnHHWiigApq urYxnnpkYzTqKAGLLGwJWRCAcHB6HOMfnTiwUZJAHvWdcaDpl1JJLNZxmaR95lUbXBxgEMOR0FRS 6DHft/xNJnu40wI4iSirj+IgHlvU9PagCyda0tW2tqFqp3FRulABIwSAT16j86gn8R6VBNDG19bs sjFDIsqlUYDOG54zzV4WVqLdbcW0PkL92PYNo/Cuc1nwLYanLJPDLJbTMBgKAYxgY+7+A70AVotU 0i6v5F0rxBLYvI5YoyAxMx6kBxwST+faoL3xje+H7v7Fd/ZtSYAnzYn2MQfu7gBgH2H/AOu7c/D/ AElrCSO3R0udnySmQkbvcdMGs3Q/h6EnkfWdsiLjy44pDhuOcng8UAcy3i3XpIJ4zfSFJiASByvs p7VNYeFrma2/tLVJPsenjLSSPnzCPZcZ5Nei2fhPRbG6W4gs1Dqdy7mLAH8c1T8XwG7fSLV3Bt57 1Eki2/eHJPzdRx6etAHPWaeCJJY44J7mC4XCpM2/5m9ehA/EAV1g01dG0OSSNRdXVpbuYmdO4ywA UcDnHTmp20zSNNSS4js7O3bYRvKBe3TP4dq4eTxNrGsxGxtocyXD5kCE/MCoBQDqoHUnOOeevIBy 2oSfab2e680yLK5beRtLE8niquSWG0cnj1JzXT6h4H1yCFJVhimUL/q4HLMgHOMEDJ69M80eHPBl 3qs5kvopra0XqzDazH2BHT3oA5l4pIywdGUqdrAjGD6GrmjaldaTqUdzZqrz/cCMpIbPGMCuk8ca ZFp9npSR28cciRmORokIU9NvOOTwc85/OuRtraW8uY7eBC8sh2qo7mgD3e1lae0hleNo3eNWZGGC pIzgjsalqjo1tLZ6LZW0xzJHCqtxjBx0/DpV6gAooooAKKKKACiiigAooooAKKKKADAznHPrRRRQ AUUUUAFMlkEMLyMCVRSxAGTxWZfXepuyw6daKBKSouZXwIxzltuOe2PX0xWHF4ZN/dXRur6eS7t7 zbJPuI82FkVimAcDhscUAIJ9X8ZQqbXOmacsm9bjO55Cp4wAR3H/AOvFT6N4e1WPXTfazeC6WBWW 3O7PJ74xxxn/ACK2dGjjtVvLGKLy47e4YIvbawD8e2WP5Vp0AeZ/EGZn16KJ5SYo4VYRMxxkk8gD 8Pfit3wY1hZaPBO+EvL5yHYAncdzbRxwOD7f1rK8cXc76/Z2Mf2d0LI6/INyvnGGOeexxx1rrrHQ be3+zTXBNxeQlm85mPLN1OOnTp6UAa1FFFAGD4p8PtrtiBFO8dxECYxuwjZ6gj+tZul+ALOzaG4n nnadQrfI+3a45OCO1dhRQAUUUUAFFFFABRRRQAUUUUAFFFFABRRRQAUUUUAFIqhVCqAFAwAO1LRQ AVWhtmivrmYFTHMFOOchgMfljH61ZooAQKoJIABPU460vSiorm5is7WW5ncJFEpZmPYCgDg/HNkd 9nrNnhon2lXjPO88q2O+cD8vek0DxJcax4lilu9T+zRn5Usxna52464xyeeefTtXKarrdzqrFHZl tUdjDADwmTx9cDj2rrvBPhVGSHWbxgxzut40PAwTy3vnoKAO/ooooAKKKKACiiigAooooAKKKKAC iiigAooooAKKKKACiiigAooooAKKKKACmyRpLG0ciK6OCrKwyCPQ06s3X7qay0G8ubeRY5o48ozA HB/GgDyPXrFNK8QXdoi/u4pMopOflIBA/IitLwdqd5ZatHHA7yW55mg3YByQuVHdhkHjng1hXl3c Xt1LdXDlpZzlj6//AFuP0rq/CPha31mGPUpLuVfJmIkiCfeIwRhs+47UAenUUUUAFFFFABRRRQAU UUUAFFFFABRRRQAUUUUAFFFFABTHljjdEd1VnOEBPLHrxT6guLO3unjeaMM0edjZIK5xnGPXH5cU AT0xpY0bazqpxnBOP89DSJCiBwOjkk9uv0+poWCJY1jCAovIB5xQA5JEkUNG6up7qciooLy2upJU gnjkeJtsiowJU+h/I1UlW9tJ554YYpIWZAsUUYDlQMHJLAZ/oOlcwthrun6tc6jYWEQgih2BGOHm x944X7zFsnnrxigDqtavptO0qa5t4hLONqxoehZmCjPI4ya5N9X1jXUfQ7/RfIkuV4lYMqpjkMQQ e49avRHWfEeoXG55LHSFZCivCFkcjBxzyPr7D3rraAOdm8FaLPPFK1tt2bt6IdqyEjGT3GOoxjmt fTtMtNJtBbWUIiizuIySSfUk9+Kt0UAFFFFABRRRQAUUUUAFFFFABRRRQAUUUUAFFFFABRRRQAUU UUAFFFFABRRRQAUUUUAFFFFABRRRQAUUUUAFFFFABRRRQAUUUUAf/9k=