Title: Environmental assessment of Denver MRF : impact of freshwater flow on water quality of the Great Ouse estuary : draft working paper 3
Author: National Rivers Authority Anglian Region
Document Type: Monograph
Annotation: EA additional title info: draft working paper 3 - environmental assessment of denver mrf impact of freshwater flow on water quality of the great ouse estuary
Abstract:
The water quality data collected by NRA in the Great Ouse estuary, including its
tributaries and effluent sources, have been reviewed to assess the current water
quality of the estuary. The data have been used to set up boundary conditions for the
Great Ouse estuary water quality model which predicts water quality conditions that
are broadly in agreement with the observed conditions.
The model is used to predict water quality in the estuary as a result of changes to the
Ely Ouse flow at Denver. The results demonstrate that the estuary water quality
declines as total freshwater flows reduce, provided tributary and effluent quality
remains constant. The results indicate that it does not make much difference
whether the fresh water in the estuary comes from the Ely Ouse or the Bedford
Ouse. Changing the Ely Ouse discharge from the Tail Sluice to Denver Sluice has
a negligible effect on estuary water quality.
The model predictions may be used to indicate the order of deterioration in water
quality associated with a reduction in freshwater flow. In autumn water quality seems
more sensitive to freshwater flow than during the remainder of the year.
Publisher: National Rivers Authority
Publication Date: 1993
Publication Place: Peterborough
Subject Keywords: Rivers; Estuaries; Water quality; Discharge (hydrology); Models; Forecasting; Effluents
Geographic Keywords: Cam and Ely Ouse catchment; Great Ouse; Upper and Bedford Ouse catchment
Extent: 20
Permalink: http://www.environmentdata.org/archive/ealit:4179
Total file downloads: 324
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