Literature review of Porirua Harbour and catchmentAppendix 2: Annotated Bibliographydischarge with an increase in overall volume of discharge and an increase in thefrequency of s<strong>to</strong>rm events.MCConchie, I. (2000). From floods <strong>to</strong> forescasts: the hydrology of <strong>Welling<strong>to</strong>n</strong>. Pp 35-74 inMCConchie, I. , Winchester, D. and R. Willis (eds) Dynamic Welling10n. ' a conieniporu, ysynthesis und explanuiion of Welling<strong>to</strong>ll. Institute of Geography, Vic<strong>to</strong>ria University of<strong>Welling<strong>to</strong>n</strong>Synthesis of hydrology and flood management in <strong>Welling<strong>to</strong>n</strong> City, Hutt Valley and partsof POTirua City. Includes discussion of flooding issues in Porirua Stream and catchmentHis<strong>to</strong>ry of flooding and flood control. Management response limited because of theexisting land use and tenure along the valley floor and stream edges, so mainlyengineering solutions used. Draws on analysis of <strong>Welling<strong>to</strong>n</strong> Regional Council(1989c)NIWA. (2009). Pauatahanui at Gorge unvalidated data. Environmental Data Explorer NewZealand 10nlinel Retrieved: 10/2/2009, from hit ://edenz. niwa. conz/inaIPIot?name=Pauatahanui+at+Gorge+(River+Flow).Website showing data from river gauge at Pauatahanui Stream. River now (in'/s) andriver stage (min) data available from April 2007 <strong>to</strong> present date. Statistics on minimum,maximum and mean now rate and minimum and maximum stage level. Archived dataavailable for downloadRoper-Lindsay, I. (1990). Ponyuo Siredni - ecological repori. Boffa Miskell Partners Ltd,Unpublished report, held at GWRCOutlines important fac<strong>to</strong>rs that must be considered in floodworks design for a healthyecological environment. Including stream geomorphology, tributary access, and banktrees. Lists streams and flora and fauna flanking the streams. Discussion predates floodworksTCB (1965). Rayon oit. /100d controliit Ihe Ponyuo SII'eoni calchme, 11. <strong>Welling<strong>to</strong>n</strong>, New Zealand,Truebridge, Canender, Beach and Co , Unpublished report, held at GWRC library.Report detailing the breakdown of various smaller catchments and runoff and channelcapacities for POTirua Stream. Calculates levels for the 100, 50 and 25 year floods.Outlines a proposed flood protection scheme (many of which are currently in place suchas the retention basins). Gives cost estimates and design specificationsTCB (1970). Second yepori o11 flood coltirol in Ihe Portri!a Basin. Well^^gion. Truebridge,Canender, Beach and Co, for the POTirua Basin Catchment CommitteeOutline of flood controls for POTirua Stream with description along each reach.Economic analyses including cost of potential flood damage at each area and cost offlood protection work. Includes plan of flooding limits at city centre and technical plansfor flood works.Watts, L. and M. GOTdon (2008). Annwu!/Iydro!ogy 1110ni!onrig yep0, '110r 1/1e Welling10n region,2007/08, Environmental Moni<strong>to</strong>ring and Investigations Department, <strong>Greater</strong> <strong>Welling<strong>to</strong>n</strong> RegionalCouncil, Report N'GW/EMI-G-08/159.Hydrology report covering July 2007 <strong>to</strong> June 2008. Describes overalltrends in rainfall,river flows and lake levels as well as notable hydrological events. Deals with surfacewater only. Moni<strong>to</strong>rs Forirua Stream at <strong>to</strong>wn centre, HOTokiri at SnOdgrass, Taupo atFlax Swamp. Average flows for these streams was 4.8, 15 and 35 in Is, respectively.Drought conditions prevailed in Nov 2007 with particularly low rainfall resulting inlower river flows, especially in December.Reportfor Porirua City Council & <strong>Welling<strong>to</strong>n</strong> City CouncilBlaschke and Rutherford Environmental ConsultantsFebruary 201014
.Literature review of Porirua Harbour and catchmentAppendix 2: Annotated BibliographyWRC (1989c). Porirutt Sirennt food millguiioii PI'oposals. Review of Environnienml InIPuc!Assessii?eni. <strong>Welling<strong>to</strong>n</strong> Regional Council, Report N" 89.Covers the recommendations suggested in EIA and adopted by <strong>Welling<strong>to</strong>n</strong> RegionalCouncil for flood mitigation, including a flood water detention area in Belmont Gully andSe<strong>to</strong>n Nossiter Park. Includes maps and technical drawingsWRC (1998a). Ponyua flood Inni^ajioit scheiiie. Findluy SII'eel 1/1vesiigoiion. Flood protection(strategy and assets), Landcare Division, <strong>Welling<strong>to</strong>n</strong> Regional Council, Report N" WRC/FPSA-T-98114Report considering options for houses on Finchay St, Tawa. Houses purchased bycouncil for significant channel upgrade and house relocation which never eventualedReport considers councils options for these properties. Contains technical drawings oflocationWRC (2001). Ponyun Sired171 city cenire redc/I gravel analysis 1996 <strong>to</strong> 2000. <strong>Welling<strong>to</strong>n</strong>Regional CouncilAssesses quantity of gravel aggradation and the potential effects of aggradation(considering context of his<strong>to</strong>rical channel work and extraction). From 1996 <strong>to</strong> 2000,2000m of gravel has accumulated. Provides cross sectional survey streams and maps.Annual water quality surveyreportsBerry, A. (1995). Baseline worer quality of I'ivers und siredIris ill 1/1e Well^}^8101i Region1994/1995. Consents and Investigations Department, Hydrological Studies Group, <strong>Welling<strong>to</strong>n</strong>Regional Council, Publication N' WRC/Cl-T-95150Annual baseline water quality survey results of streams and rivers in the <strong>Welling<strong>to</strong>n</strong>Region initiated by Cameron (1988); similar <strong>to</strong> Cameron (1994). In Horokiri Stream 2downstream sites drop <strong>to</strong> 'doubtful' (classification as per Cameron (1988); 2 upstreamsites remain 'suitable'. Pauatahanui Stream 3 sites 'doubtful', I 'suitable'. All POTiruaStream sites 'doubtful'. POTirua Stream still has high concentrations of nutrients, as doPauatahanui Stream <strong>to</strong> a lesser extentBerry, A. (1996a). Buseliiie warer quality of rivers und SII'erriiis tit the WeSIer, I Welling10nRegion. 1995/96. Resource Investigations Department, <strong>Welling<strong>to</strong>n</strong> Regional Council, PublicationN' WRC/RINV-T-96132Baseline water quality survey results of streams and rivers in the <strong>Welling<strong>to</strong>n</strong> Regioninitiated with Cameron (1988) and is similar <strong>to</strong> Berry (1995) except data is also comparedwith the Australian and New Zealand Environment and Conservation Council(ANZECC1994) Water Quality Standards. In addition, measurements of nitrate, dissolved inorganicnitrogen and ammonia were collected. HOTokiri Stream all4 sites 'suitable'. PauatahanuiStream 3 sites doubtful', I 'suitable'. POTirua Stream all sites doubtful'Berry, A. (1997b). Annual freshwuier quu!11y I'epoi'I. ' WeSIe, ', I Welling10/1 Region. ' 1996/97Resource Investigations Department, <strong>Welling<strong>to</strong>n</strong> Regional Council, Publication N' WRC/RINV-G-97143Annual water quality survey results of streams and rivers in the <strong>Welling<strong>to</strong>n</strong> Region asinitiated in Cameron (1988). Similar <strong>to</strong> Berry (1996a). Horokiri Stream all 2 sites'suitable', 2 sites dropped 10 'doubtful'. Pauatahanui Stream 2 downstream sites 'doubtful',Reportfor Porirua City Council & <strong>Welling<strong>to</strong>n</strong> City CouncilBlaschke and Rutherford Environmental ConsultantsFebruary 201015
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