Dataset
The Hills Shire Council
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North Parramatta Precinct
NSW Flood Data Portal

The flood study was undertaken in two stages. The aims of each stage of the flood study are:

Stage 1 - Hydrological Analysis

  • Collate all the relevant data on Council's existing stormwater drainage system;
  • Develop a hydrological model to investigate the drainage system performance for the 5, 10, 20, 100, 200 year ARI storms and the PMF;
  • Identify the flooding problem areas for existing development conditions within the study area;
  • Identify the flooding problem areas for ultimate development conditions (represented by all of the study area utilising OSD).

Stage 2 - Hydraulic Analysis

  • Estimate the extent of flooding and flood levels for the PMF, 20 and 100 year ARI floods for existing development conditions, and
  • Estimate the 20 and 100 year ARI flood levels and extent of flooding for ultimate development conditions.

Study Scope

The scope of the Stage 1 flood study was to use a hydrological model to estimate peak pipe and overland flows throughout the North Parramatta Precinct. The peak overland flows were used in the hydraulic modelling in Stage 2 to estimate peak flood levels and flood extents.

Design Rainfall Intensities used for the estimation of peak flows were obtained from Baulkham Hills Shire Council "Design Guidelines for Subdivisions / Developments." Storm durations from 5 minutes to 4.5 hours were used to produce rainfall patterns from which the D NS model estimates peak pipe and overland flows.

The results presented in this report are the worst case peak flow for each set of storm durations for a particular ARI storm. Where flood levels are noted, all levels refer to Australian Height Datum (m, AHD)

Dataset Source Details

This dataset is connected from the NSW Flood Data Portal

Source dataset project North Parramatta Precinct
Source dataset link North Parramatta Precinct

Data and Resources

Metadata Summary What is metadata?

Field Value
Language English
Edition 26/06/2017
Purpose Land and Resource Management
Frequency of change As needed
Date of Asset Publication 2004-08-01
License 3rd party licence
Geospatial Topic Disaster
NSW Place Name Northmead
Extent

Dataset extent
River Basin 212 - Hawkesbury
Spatial Data Capture Method Exported from Model
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