Grange Planning Brain

title: Ballarat Flood Overlays and Flood Modelling Program council: ballarat state: vic category: constraint classification: MAJOR status: exhibited last_compiled: 2026-05-31 source_docs:

  • ballarat-11-waterways-flood-modelling-summary-report.pdf
  • ballarat-11-waterways-flood-modelling-summary-report.txt
  • ballarat-municipal-flood-emergency-planning-mfep-november-11th-2019-v1-1-.txt
  • ballarat-municipal-flood-emergency-planning-mfep-november-11th-2019-v1-1.txt
  • local-flood-guide-2025-ballarat-city.txt
  • local-flood-guide-2025-golden-point-canadian-eureka-and-ballarat-east.txt
  • local-flood-guide-2025-miners-rest.txt
  • web-research-L1-flood-amendment-c217ball-council-news.txt
  • web-research-L1-flood-amendment-c217ball-explanatory-report.txt
  • web-research-L1-flood-amendment-c217ball-fo2-schedule.txt
  • web-research-L1-flood-amendment-c217ball-lsio2-schedule.txt
  • web-research-L1-flood-amendment-c217ball-sbo1-schedule.txt
  • web-research-L1-flood-ballarat-11-waterways-mysay.txt
  • web-research-L1-flood-ballarat-11-waterways-summary-mysay.txt
  • web-research-L1-flood-community-engagement-mysay.txt
  • web-research-L1-flood-investigation-ghcma.txt
  • web-research-L1-flood-investigation-mysay.txt
  • web-research-L1-flood-mitigation-2025-progress-council.txt
  • web-research-L1-flood-modelling-mysay.txt
  • web-research-L1-flood-study-page-mysay.txt
  • web-research-L1-flood-summary-2025-mysay.txt

Ballarat Flood Overlays and Flood Modelling Program

Ballarat’s flood overlay program converts updated catchment-scale modelling into statutory controls for land use, buildings and works across the Yarrowee River catchment, with Amendment C217ball proposing FO2, LSIO2 and SBO1 controls over 4,260 affected properties. (Source: web-research-L1-flood-amendment-c217ball-explanatory-report.txt) The practical planning effect is not a prohibition on development; it is a permit, design-level and referral framework requiring flood levels, safe access, flood storage, conveyance and climate change impacts to be assessed before affected land is further developed. (Source: web-research-L1-flood-amendment-c217ball-fo2-schedule.txt; Source: web-research-L1-flood-amendment-c217ball-lsio2-schedule.txt; Source: web-research-L1-flood-amendment-c217ball-sbo1-schedule.txt)

Background

The technical base is the Ballarat 11 Waterways Flood Study, prepared by Water Technology for the City of Ballarat and dated 29 July 2025. (Source: ballarat-11-waterways-flood-modelling-summary-report.pdf, p.1) The study updates hydrologic and hydraulic models originally developed between 2017 and 2019 for 11 waterways, using 2019 LiDAR, updated development assumptions, updated pit and pipe information, TUFLOW 2023-03-AB HPC modelling and climate change modelling to 2100. (Source: ballarat-11-waterways-flood-modelling-summary-report.pdf, pp.3, 6, 49)

The waterways covered by the 2025 program are Yarrowee River and Gnarr Creek, Canadian Creek and Tributaries, Bonshaw Creek, Kensington Creek, Redan Creek, The Chase, Warrenheip Creek and Ryan’s Drain, and Little Bendigo Creek and Hit or Miss Gully. (Source: ballarat-11-waterways-flood-modelling-summary-report.pdf, p.6) Several waterways were expressly outside the 2025 project scope, including Winter Creek, Ross Creek, Dog Trap Creek, Union Jack Creek and Lake Wendouree except for lake outflow within the Gnarr Creek and CBD study area. (Source: ballarat-11-waterways-flood-modelling-summary-report.pdf, p.9)

Amendment C217ball implements the flood study by inserting Schedule 2 to the Floodway Overlay, Schedule 2 to the Land Subject to Inundation Overlay and Schedule 1 to the Special Building Overlay. (Source: web-research-L1-flood-amendment-c217ball-explanatory-report.txt) The amendment was on public exhibition from 29 April 2026 to 29 May 2026 after authorisation by the Minister for Planning, with a directions hearing scheduled for 3 August 2026 and a panel hearing scheduled for 31 August 2026. (Source: web-research-L1-flood-amendment-c217ball-council-news.txt; Source: web-research-L1-flood-amendment-c217ball-explanatory-report.txt)

Analysis

Statutory mechanism: three overlays for three flood behaviours

The amendment separates flood-prone land into three mechanisms: FO2 for waterways, main flood paths, drainage depressions and high-hazard areas; LSIO2 for flood storage, flood fringe and lower-hazard inundation; and SBO1 for urban stormwater flooding where drainage-system capacity controls flooding. (Source: ballarat-11-waterways-flood-modelling-summary-report.pdf, pp.45-47; Source: web-research-L1-flood-amendment-c217ball-explanatory-report.txt) This matters because the same storm event is translated into different planning consequences depending on whether land is needed to carry floodwater, store floodwater, or manage local overland stormwater flows. (Source: ballarat-11-waterways-flood-modelling-summary-report.pdf, pp.46-47)

FO2 is the strongest of the three proposed controls because it applies to high-hazard areas where the 1% AEP RCP8.5 depth is at least 0.3 metres, velocity is at least 2.0 metres per second, or velocity-depth product is at least 0.3 square metres per second. (Source: ballarat-11-waterways-flood-modelling-summary-report.pdf, p.46) In simple terms, FO2 is the part of the floodplain where development can block or worsen the movement of floodwater, so the schedule focuses on preserving conveyance and storage and avoiding increases in flood depth or velocity on nearby land. (Source: web-research-L1-flood-amendment-c217ball-fo2-schedule.txt)

LSIO2 applies to land liable to inundation by overland flow, flood storage or flood fringe flooding, using the 1% AEP flood under the 2100 RCP8.5 climate scenario. (Source: ballarat-11-waterways-flood-modelling-summary-report.pdf, p.46) Its mechanism is to keep development compatible with flood hazard and local drainage conditions while maintaining temporary storage and free passage of floodwaters. (Source: web-research-L1-flood-amendment-c217ball-lsio2-schedule.txt)

SBO1 applies to urban stormwater flooding rather than riverine flooding, including localised or widespread flooding when rainfall intensity exceeds drainage-system capacity. (Source: web-research-L1-flood-amendment-c217ball-sbo1-schedule.txt) The 2025 study filtered SBO extents to remove shallow depths of 5 centimetres or less and used velocity vectors to distinguish overland stormwater flooding from riverine flooding, particularly in the Redan Creek and Chase Waterway areas. (Source: ballarat-11-waterways-flood-modelling-summary-report.pdf, p.47)

Spatial scale and affected land

Amendment C217ball affects 4,260 properties in total, including 1,747 properties within FO2, 2,676 properties within LSIO2 and 1,078 properties within SBO1, noting that some properties are affected by more than one overlay. (Source: web-research-L1-flood-amendment-c217ball-explanatory-report.txt) The affected suburbs include established central, residential, industrial, rural and growth-area locations, including Ballarat Central, Bakery Hill, Soldiers Hill, Alfredton, Lucas, Winter Valley, Sebastopol, Delacombe, Warrenheip, Bonshaw, Smythes Creek and Cambrian Hill. (Source: web-research-L1-flood-amendment-c217ball-explanatory-report.txt)

The SBO1 is narrower in geography than the riverine overlays and is proposed for urban areas in Alfredton, Ballarat Central, Ballarat North, Delacombe, Invermay Park, Newington, Redan and Sebastopol. (Source: web-research-L1-flood-amendment-c217ball-explanatory-report.txt) The explanatory report says this stormwater overlay is generally in residential upper reaches of Bonshaw, Gnarr, Kensington and Redan Creeks and The Chase Waterway, except for industrial and mixed-use areas in Delacombe and Alfredton affected by upper-reach overland flows in the Redan and Bonshaw Creek catchments. (Source: web-research-L1-flood-amendment-c217ball-explanatory-report.txt)

The amendment does not remove the existing FO1 and LSIO1 mapping for the Burrumbeet catchment in the northern portion of the municipality; those extents remain unchanged while new FO2 and LSIO2 Yarrowee catchment extents are added to relevant LSIO-FO maps. (Source: web-research-L1-flood-amendment-c217ball-explanatory-report.txt) This creates a two-catchment statutory structure for flood planning in Ballarat: the Yarrowee catchment is addressed through C217ball and the Burrumbeet Creek catchment remains governed by the existing FO1/LSIO1 framework. (Source: web-research-L1-flood-amendment-c217ball-explanatory-report.txt; Source: web-research-L1-flood-investigation-ghcma.txt)

Modelling method and technical defensibility

The 2025 flood study used RORB for hydrology and TUFLOW for hydraulics, meaning rainfall-runoff was first converted into design flow hydrographs and then translated into flood levels, depths, velocities and extents. (Source: ballarat-11-waterways-flood-modelling-summary-report.pdf, p.9) Design events modelled were 20%, 10%, 5%, 2%, 1% and 0.5% AEP events, with 1% AEP climate change scenarios for 2100 under RCP4.5, RCP6 and RCP8.5. (Source: ballarat-11-waterways-flood-modelling-summary-report.pdf, pp.6, 26)

The Yarrowee River and Gnarr Creek model was the only RORB model with sufficient streamflow data for calibration, using the Leigh River at Mount Mercer streamflow gauge. (Source: ballarat-11-waterways-flood-modelling-summary-report.pdf, pp.11, 14) The Mount Mercer gauge had flow and water-level records from 1956 to 2018 available for the original flood frequency analysis, giving 63 complete annual records for verification. (Source: ballarat-11-waterways-flood-modelling-summary-report.pdf, p.19)

The flood frequency analysis estimated a 1% AEP peak flow of 477 cubic metres per second at Mount Mercer, while the adopted RORB design flow was 473 cubic metres per second, a difference of minus 4 cubic metres per second or minus 1%. (Source: ballarat-11-waterways-flood-modelling-summary-report.pdf, p.20) That close match is important because it shows the design-loss assumptions used for the calibrated catchment were aligned with observed long-term flood behaviour, rather than only with regional default values. (Source: ballarat-11-waterways-flood-modelling-summary-report.pdf, pp.20, 24-25)

For ungauged catchments, the study adopted a 24 millimetre initial loss and 2 millimetres per hour continuing loss, using the calibrated Yarrowee/Gnarr behaviour in preference to unmodified ARR Data Hub regional losses. (Source: ballarat-11-waterways-flood-modelling-summary-report.pdf, pp.24-25) This is a material judgement because regional ARR Data Hub continuing losses for the study area were higher, and higher losses would generally reduce modelled runoff and potentially understate flood extents. (Source: ballarat-11-waterways-flood-modelling-summary-report.pdf, pp.22-25)

The study had multiple reviews, including a DEECA/DELWP technical review in 2017, Neil M. Craigie review in 2018, Tony Ladson review of Yarrowee hydrological calibration and losses in 2019, and Stantec peer review in 2024. (Source: ballarat-11-waterways-flood-modelling-summary-report.pdf, pp.9-10) Stantec preferred a different representation of rainfall losses, but sensitivity testing on Bonshaw Creek found only marginal changes in the number of inundated properties, so the earlier adopted approach was maintained. (Source: ballarat-11-waterways-flood-modelling-summary-report.pdf, pp.10, 49-50)

Climate change as the statutory design basis

The proposed overlays are based on the 1% AEP flood event incorporating the 2100 RCP8.5 climate change scenario. (Source: ballarat-11-waterways-flood-modelling-summary-report.pdf, pp.35, 46-49; Source: web-research-L1-flood-amendment-c217ball-explanatory-report.txt) The study modelled rainfall intensity increases for Bonshaw Creek of 7.8% under RCP4.5, 10.8% under RCP6 and 18.4% under RCP8.5 by 2100. (Source: ballarat-11-waterways-flood-modelling-summary-report.pdf, p.26)

The planning implication is that the mapped control is not only a record of current flood behaviour; it is a future-risk control that assumes a higher-emissions climate scenario to 2100. (Source: web-research-L1-flood-amendment-c217ball-explanatory-report.txt) This makes the overlays more conservative than a current-climate 1% AEP map and may bring additional land into permit-trigger areas where future rainfall intensity increases modelled flood depth or extent. (Source: ballarat-11-waterways-flood-modelling-summary-report.pdf, pp.25-26, 35, 46-48)

Development control effects

The FO2, LSIO2 and SBO1 schedules all use the 1% AEP flood level plus 300 millimetres as a central design threshold for exempted or acceptable buildings and works. (Source: web-research-L1-flood-amendment-c217ball-fo2-schedule.txt; Source: web-research-L1-flood-amendment-c217ball-lsio2-schedule.txt; Source: web-research-L1-flood-amendment-c217ball-sbo1-schedule.txt) The 300 millimetre freeboard also aligns with the flood study’s statement that Victorian Building Regulations specify floor levels should be at least 300 millimetres above a nominated flood level. (Source: ballarat-11-waterways-flood-modelling-summary-report.pdf, p.45)

A permit application under FO2 or LSIO2 must include a flood risk report that considers the most recent flood mapping and flood advice from the relevant Floodplain Management Authority, demonstrates safe access and egress during the applicable 1% AEP event, and assesses flood levels including future climate scenarios. (Source: web-research-L1-flood-amendment-c217ball-fo2-schedule.txt; Source: web-research-L1-flood-amendment-c217ball-lsio2-schedule.txt) A permit application under SBO1 must similarly consider the most recent City of Ballarat flood mapping, demonstrate safe access and egress, and assess flood levels using the applicable 1% AEP event including future climate scenarios. (Source: web-research-L1-flood-amendment-c217ball-sbo1-schedule.txt)

The schedules preserve transition pathways for existing approvals, current planning permit applications, issued building permits and cases where a building surveyor was appointed before approval of the schedule and substantial design progress can be certified. (Source: web-research-L1-flood-amendment-c217ball-fo2-schedule.txt; Source: web-research-L1-flood-amendment-c217ball-lsio2-schedule.txt; Source: web-research-L1-flood-amendment-c217ball-sbo1-schedule.txt) This reduces immediate disruption to advanced applications but still ties those pathways to natural ground levels, finished floor levels and the 300 millimetre freeboard threshold. (Source: web-research-L1-flood-amendment-c217ball-fo2-schedule.txt; Source: web-research-L1-flood-amendment-c217ball-lsio2-schedule.txt; Source: web-research-L1-flood-amendment-c217ball-sbo1-schedule.txt)

Emergency management and lived flood consequences

The Municipal Flood Emergency Plan identifies Ballarat as subject to flash flooding when large storm events exceed urban drainage and watercourse capacity, affecting urban properties, local and larger roads, and rural areas along watercourses. (Source: ballarat-municipal-flood-emergency-planning-mfep-november-11th-2019-v1-1.txt, p.15) Flood-prone areas listed in the MFEP include Ballarat Central, Ballarat North, Mount Pleasant, Sebastopol, Eureka, Ballarat East, Canadian, Redan, Lucas and Miners Rest. (Source: ballarat-municipal-flood-emergency-planning-mfep-november-11th-2019-v1-1.txt, p.15)

The Ballarat City Local Flood Guide says Ballarat City had four significant flood events between 1988 and 2011 and that the most severe flood in living memory was in 1991, when 76 millimetres of rain fell in two hours. (Source: local-flood-guide-2025-ballarat-city.txt, p.3) The guide explains that Gnarr Creek can rise quickly near Doveton Street, with floodwater flowing down Market, Mair and Grenville Streets before reaching Bridge Mall, and that Gnarr Creek can take as little as two hours to reach highest levels during major storms. (Source: local-flood-guide-2025-ballarat-city.txt, p.3)

The Ballarat City Local Flood Guide links a 76 millimetre two-hour rainfall event to the 1991 flood, significant building impacts around Lydiard Street and Bridge Mall, and possible access cuts on Main Road, Bridge Mall, Lydiard Street and Doveton Street where water exceeds 0.5 metres. (Source: local-flood-guide-2025-ballarat-city.txt, p.5) The same guide links a 148 millimetre 48-hour rainfall event to the 1933 Yarrowee River flood and destruction of the White Horse Bridge across the Yarrowee River. (Source: local-flood-guide-2025-ballarat-city.txt, p.5)

Miners Rest sits outside the C217ball Yarrowee statutory update but remains a major flood-risk comparison point because the Burrumbeet Flood Investigation found a 1% AEP design peak flow of 118 cubic metres per second at Miners Rest and 155 cubic metres per second at the Burrumbeet Creek gauge. (Source: web-research-L1-flood-investigation-ghcma.txt) The Miners Rest Local Flood Guide says seven significant flood events occurred between 1981 and 2011, the largest flood on record was in 2011, and flooding can occur within 3 to 6 hours after heavy rainfall. (Source: local-flood-guide-2025-miners-rest.txt, p.3)

For Miners Rest, the 2013 Burrumbeet investigation estimated average annual damages of approximately $270,661 under current floodplain conditions and predicted 36 buildings flooded above floor and 142 properties flooded below floor in the 1% AEP event. (Source: web-research-L1-flood-investigation-ghcma.txt) The 2025 Miners Rest guide translates this into a community-facing scenario, stating that 140 millimetres in 24 hours could potentially affect 178 properties, including 36 above-floor and 142 below-floor impacts. (Source: local-flood-guide-2025-miners-rest.txt, p.5)

Engagement and amendment pathway

The 2024 engagement phase sent letters to 5,460 owners and occupiers identified as being in potential flood-prone areas, held a community information session on 11 July 2024 with 87 registrations and 71 participants, and received 56 written community submissions plus one petition. (Source: web-research-L1-flood-community-engagement-mysay.txt) The reported result of that engagement was that the Redan and Canadian Creek models and tributaries were updated to reflect recent mitigation works raised through submissions. (Source: web-research-L1-flood-community-engagement-mysay.txt)

The 2026 statutory exhibition is narrower and more formal than the 2024 engagement because it concerns the proposed planning scheme amendment itself. (Source: web-research-L1-flood-amendment-c217ball-council-news.txt; Source: web-research-L1-flood-amendment-c217ball-explanatory-report.txt) Submissions to Amendment C217ball were required by 29 May 2026, and panel dates were pre-set under Ministerial Direction No.15. (Source: web-research-L1-flood-amendment-c217ball-explanatory-report.txt)

The amendment was prepared by Ballarat City Council as planning authority, at the request of Ballarat City Council and Corangamite CMA. (Source: web-research-L1-flood-amendment-c217ball-explanatory-report.txt) The explanatory report says the Corangamite CMA endorses application of FO, LSIO and SBO and is the relevant floodplain management authority and recommending referral authority under Clause 66.03. (Source: web-research-L1-flood-amendment-c217ball-explanatory-report.txt)

Current Status

As at 31 May 2026, Amendment C217ball has completed its public exhibition period, which ran from 29 April 2026 to 29 May 2026. (Source: web-research-L1-flood-amendment-c217ball-council-news.txt; Source: web-research-L1-flood-amendment-c217ball-explanatory-report.txt) The next scheduled statutory steps are a directions hearing on 3 August 2026 and a panel hearing on 31 August 2026. (Source: web-research-L1-flood-amendment-c217ball-explanatory-report.txt)

The flood study itself recommends that City of Ballarat endorse the flood mapping update, undertake a planning scheme amendment for LSIO, FO and SBO mapping, include climate change design modelling in flood-risk assessment, discuss additional gauges with the Bureau of Meteorology and Corangamite CMA, update MFEP flood intelligence products, maintain critical drainage-network elements, and identify future stormwater flood mapping opportunities. (Source: ballarat-11-waterways-flood-modelling-summary-report.pdf, p.50) The study also recommends review of each waterway at least every two years and full study updates every five years, or earlier if Australian Rainfall and Runoff guidance changes materially or better information becomes available. (Source: ballarat-11-waterways-flood-modelling-summary-report.pdf, p.50)

Dependencies

  • Blocks: Development that cannot demonstrate acceptable flood safety, safe access and egress, no unacceptable off-site flood impacts, and compliance with relevant 1% AEP plus climate-change flood levels may be delayed, redesigned or refused under FO2, LSIO2 or SBO1. (Source: web-research-L1-flood-amendment-c217ball-fo2-schedule.txt; Source: web-research-L1-flood-amendment-c217ball-lsio2-schedule.txt; Source: web-research-L1-flood-amendment-c217ball-sbo1-schedule.txt)
  • Blocked by: Final statutory effect depends on the post-exhibition amendment process, including consideration of submissions, the scheduled Panel process and ultimate approval of Amendment C217ball. (Source: web-research-L1-flood-amendment-c217ball-explanatory-report.txt)
  • Informed by: The amendment is informed by the Ballarat 11 Waterways Flood Study, community engagement, Corangamite CMA input, Water Technology modelling, DEECA/DELWP and external reviews, and City of Ballarat mapping work. (Source: ballarat-11-waterways-flood-modelling-summary-report.pdf, pp.9-10; Source: web-research-L1-flood-community-engagement-mysay.txt; Source: web-research-L1-flood-amendment-c217ball-explanatory-report.txt)
  • Implements: The amendment implements Planning Policy Framework directions on settlement safety, river and riparian corridors, natural hazards and climate change, floodplain management and integrated water management. (Source: web-research-L1-flood-amendment-c217ball-explanatory-report.txt)
  • Conflicts with: The corpus does not provide adopted submission analysis for C217ball, so any conflicts between landowner submissions, floodplain management objectives and housing delivery cannot yet be quantified. (Source: web-research-L1-flood-amendment-c217ball-explanatory-report.txt)

The Yarrowee River catchment is described as a major sub-catchment of the upper Barwon River system, originating north of Ballarat and flowing south through Ballarat Central, Sebastopol and Delacombe before joining the Leigh River. (Source: web-research-L1-flood-amendment-c217ball-explanatory-report.txt) The technical calibration uses the Leigh River at Mount Mercer streamflow gauge, meaning Ballarat’s urban flood model is partly anchored to catchment behaviour downstream of the municipal urban area. (Source: ballarat-11-waterways-flood-modelling-summary-report.pdf, pp.14, 19-20)

The program involves Corangamite CMA for the Yarrowee catchment and Glenelg Hopkins CMA for the Burrumbeet/Miners Rest flood context. (Source: web-research-L1-flood-amendment-c217ball-explanatory-report.txt; Source: web-research-L1-flood-investigation-ghcma.txt; Source: local-flood-guide-2025-miners-rest.txt, p.7) The 2025 study recommends that Corangamite CMA upload mapping to FloodZoom and the Victorian Digital Twin database and identify opportunities to increase flood warning products across the catchment. (Source: ballarat-11-waterways-flood-modelling-summary-report.pdf, p.50)

Gaps in This Analysis

The corpus includes the 2025 summary report but not the individual Hydrology and Hydraulics Reports for each waterway, even though the MySay page lists separate reports for Bonshaw Creek, Canadian Creek and Tributaries and other catchments. (Source: web-research-L1-flood-study-page-mysay.txt; Source: ballarat-11-waterways-flood-modelling-summary-report.pdf, p.51) This limits parcel-scale analysis because the summary report provides overlay criteria and model method but not detailed per-waterway tables of flood depths, velocities, structure controls, design durations, affected lots or mitigation sensitivities. (Source: ballarat-11-waterways-flood-modelling-summary-report.pdf, pp.35, 51)

The corpus does not include the GIS overlay layers, property-level flood reports, Digital Twin/FloodZoom layers or final planning scheme maps in spatial form. (Source: ballarat-11-waterways-flood-modelling-summary-report.pdf, p.51; Source: local-flood-guide-2025-ballarat-city.txt, p.6; Source: local-flood-guide-2025-miners-rest.txt, p.7) This prevents measurement of how much of each property, growth area, road corridor or activity-centre parcel is affected by FO2, LSIO2 or SBO1. (Source: web-research-L1-flood-amendment-c217ball-explanatory-report.txt)

The corpus does not include submissions to the 2026 exhibition because the amendment submission deadline was 29 May 2026 and no post-exhibition submissions report is present. (Source: web-research-L1-flood-amendment-c217ball-explanatory-report.txt) This means contested issues cannot yet be counted by theme, submitter type, requested change or likely Panel consequence. (Source: web-research-L1-flood-amendment-c217ball-explanatory-report.txt)

The Golden Point, Canadian, Eureka and Ballarat East Local Flood Guide extraction contains only form-feed characters and no readable content. (Source: local-flood-guide-2025-golden-point-canadian-eureka-and-ballarat-east.txt) This is a source-quality gap because those suburbs are within the amendment geography and the missing guide may contain community-scale flood consequences not available in the broader Ballarat City guide. (Source: web-research-L1-flood-amendment-c217ball-explanatory-report.txt; Source: local-flood-guide-2025-golden-point-canadian-eureka-and-ballarat-east.txt)

The 2019 MFEP is present in two extracted forms, but the 2025 flood study recommends updating flood intelligence products and the MFEP using the latest catchment information. (Source: ballarat-municipal-flood-emergency-planning-mfep-november-11th-2019-v1-1.txt; Source: ballarat-municipal-flood-emergency-planning-mfep-november-11th-2019-v1-1-.txt; Source: ballarat-11-waterways-flood-modelling-summary-report.pdf, p.50) Until the updated MFEP is available, emergency-management dependencies in this page rely on pre-C217ball emergency intelligence rather than the final statutory overlay dataset. (Source: ballarat-11-waterways-flood-modelling-summary-report.pdf, p.50)

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