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Headquarters Road Dam - Environmental Flows Assessment


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Davies, PE ORCID: 0000-0003-2651-4061 2004 , Headquarters Road Dam - Environmental Flows Assessment.

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The following document details an environmental flows analysis conducted for the
proposed Headquarters Road dam in the upper Great Forester River catchment. The
location of the dam and key sites is shown in Figure 1. The construction and operation of
the proposed dam, coupled with the delivery of irrigation demand via the river channel,
will affect the flow regime in the lower reaches of a tributary adjacent to Headquarters
Road ('Headquarters Rd Creek') and the upper Great Forester River downstream of

The environmental flows (EFlows) analysis presented here was conducted using the
approach developed by Freshwater Systems and DPIWE over the last 10 years, with both
a set of monthly minimum flows and a minimum set of high/flood flow events (e.g. see
Davies and Warfe 2002, Davies et al. 2002). This EFlow regime was developed in a
manner consistent with the newly proposed framework in the draft Water Management
Amendment Bill (2004) for assessment of environmental water requirements (EWR's),
such that:
1. Environmental values are identified for the upper Great Forester;
2. Environmental objectives can be identified;
3. An EFlow regime is identified which can maintain the relevant values.

Item Type: Report (Project Report)
Authors/Creators:Davies, PE
Keywords: freshwater, environmental flows, Tasmania, dam proposal
Publisher: DPIWE
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