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Salt River Hydrological Study

Colin Whittemore, Bryan Nicholson and Nadia Nitsche (2004)
Ninham Shand Consulting Services; City of Cape Town
DOI: https://doi.org/10.14796/JWMM.R220-27
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Abstract

The Salt River Canal discharges storm runoff from a 214 km2 catchment into Table Bay just north of Cape Town’s city centre. The catchment includes a number of the northern and central suburbs of Cape Town as well as the eastern slopes of Table Mountain.

Concerns about the effects of urbanisation within the catchment in terms of increased stormwater runoff and decreased water quality led the city’s Catchment, Stormwater and River Management Branch to appoint engineering and environmental consultants to assist in formulating a Catchment Management Plan for the Salt River Catchment. During the course of Phase 1 of the Management Plan formulation, the need for undertaking several specialist studies was identified (Sigma Beta, 2000). One of these was a detailed hydrological study that was necessary to evaluate the extent and risk of flooding of residential, commercial and industrial areas located in close proximity to the rivers of the catchment.

This chapter concentrates on Phase II of the hydrological study which included evaluation of storm runoff from the various sub-catchments forming the greater Salt River Catchment and the determination of 1:50 and 1:100 y floodlines for certain of the watercourses within the catchment. The chapter outlines the methodology used, presents the results of the study and includes comments on some of the difficulties experienced and lessons learned during the course of the project.

A requirement of the study was that the hydrological modeling be undertaken using the Visual SWMM analysis software

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PAPER INFO

Identification

CHI ref #: R220-27 935
Volume: 12
DOI: https://doi.org/10.14796/JWMM.R220-27
Cite as: CHI JWMM 2004;R220-27

Publication History

Received: N/A
Accepted: N/A
Published: February 15, 2004

Status

# reviewers: 2
Version: Final published

Copyright

© 2004 CHI. Some rights reserved.

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Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.

The Journal of Water Management Modeling is an open-access (OA) publication. Open access means that articles and papers are available without barriers to all who could benefit from them. Practically speaking, all published works will be available to a worldwide audience, free, immediately on publication. As such, JWMM can be considered a Diamond, Gratis OA journal.

All papers published in the JWMM are licensed under a Creative Commons Attribution 4.0 International License (CC BY).

JWMM content can be downloaded, printed, copied, distributed, and linked-to, when providing full attribution to both the author/s and JWMM.


AUTHORS

Colin Whittemore

Ninham Shand Consulting Services, Cape Town, South Africa
ORCiD:

Bryan Nicholson

City of Cape Town, Vlaeberg, South Africa
ORCiD:

Nadia Nitsche

Ninham Shand Consulting Services, Cape Town, South Africa
ORCiD:


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