Urban water resources

McPherson, M. B.

doi:10.1029/eo057i011p00798

Cited by 3 publications

(1 citation statement)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For example, studies of the impact of abstraction at Axford on the River Kennet in Wiltshire, UK, focused on limiting abstraction such that physical habitat would not be reduced by more than 10% from that present if flows were natural (McPherson, 1997). However, physical habitat assessment requires surveys of channel geometry and, ideally, repeated surveys of water levels and velocities; such data are not widely available in the UK-only around 80 physical habitat modelling studies have been undertaken (Booker & Acreman, 2007)-and use of this approach does not meet the criterion of applicability without a site visit.…”

Section: Identification Of Physical Parametersmentioning

confidence: 99%

Developing environmental standards for abstractions from UK rivers to implement the EU Water Framework Directive / Développement de standards environnementaux sur les prélèvements d'eau en rivière au Royaume Uni pour la mise en œuvre de la directive cadre sur l'eau de l'Union Européenne

Acreman

Dunbar

Hannaford

et al. 2008

Hydrological Sciences Journal

View full text Add to dashboard Cite

Under the European Union Water Framework Directive, Member States must put in place a river basin planning framework to determine what measures are necessary to maintain and improve the ecological status for all surface water bodies. The governmental organisations legally responsible for implementing the Directive in the UK have recognised that an appropriate river flow regime is fundamental to maintain a healthy river and, as a result, they need to regulate abstractions and effluent discharges and ensure sufficient water is released from impoundments. This paper reports on the process of producing environmental standards that define the maximum abstraction allowable from UK rivers, to leave sufficient flow to maintain a healthy river ecosystem. As there are currently insufficient data available to determine the relationships between river flow and ecological status empirically, expert knowledge was captured through a series of workshops at which leading UK freshwater scientists defined maximum levels of river flow regime alteration that would achieve ecological objectives for different river water body types. For the least ecologically sensitive rivers, maximum abstractions in the range 15-35% of the natural flow were proposed, depending on the flow magnitude and time of year. For the most sensitive rivers, the maximum abstraction proposed was in the range 7.5-25%. The knowledge was used by the responsible UK authorities to develop environmental standards. The authorities subsequently used the environmental standards to determine regulatory standards that could be implemented within practical constraints and current licensing policies.Key words Water Framework Directive; environmental standards; abstraction management; rivers; expert panel; environmental flows; ecohydrology; hydro-ecology Développement de standards environnementaux sur les prélèvements d'eau en rivière au Royaume Uni pour la mise en oeuvre de la directive cadre sur l'eau de l'Union Européenne Résumé La directive cadre sur l'eau de l'Union Européenne impose aux Etats membres de mettre en place un cadre de gestion des bassins versants afin de déterminer les mesures nécessaires au maintien et à l'amélioration de l'état écologique des eaux de surface. Les organismes gouvernementaux légalement responsables de la mise en oeuvre de la directive au Royaume Uni ont reconnu qu'un régime hydrologique approprié est fondamental pour la bonne santé d'une rivière et que, en conséquence, ils doivent réglementer les prélèvements et les rejets et assurer un débit suffisant en sortie des retenues. Cet article porte sur le processus de production de standards environnementaux définissant les prélèvements maximaux possibles dans les rivières britanniques en vue du maintien de la bonne santé des écosystèmes de cours d'eau. Etant donnée l'insuffisance des données disponibles pour déterminer empiriquement une relation entre débit de rivière et état écologique, la connaissance experte a été capturée à travers une série d'ateliers lors desquels les principaux s...

show abstract

Section: Identification Of Physical Parametersmentioning

confidence: 99%

Developing environmental standards for abstractions from UK rivers to implement the EU Water Framework Directive / Développement de standards environnementaux sur les prélèvements d'eau en rivière au Royaume Uni pour la mise en œuvre de la directive cadre sur l'eau de l'Union Européenne

Acreman

Dunbar

Hannaford

et al. 2008

Hydrological Sciences Journal

View full text Add to dashboard Cite

show abstract

Urban hydrology

McPherson¹

1979

Reviews of Geophysics

View full text Add to dashboard Cite

Because the complex interactions of human activity in concentrated settlements with air, water and land must be taken into account, urban hydrology is a distinctive branch of the broad field of hydrology. As opposed to conventional hydrology, because urban development everywhere has been in continuous states of expansion and flux, urban hydrology contends with the dimension of dynamic change. Also, urban water management utilizes the social and biological sciences as well as the physical sciences. The fact that the term urban hydrology gained currency less than two decades ago reflects the lag in the recognition that America became an urban nation over half a century ago.

show abstract

SOIL CONSERVATION SERVICE RUNOFF CURVE NUMBER ESTIMATES FROM LANDSAT DATA¹

Slack

Welch

1980

J American Water Resour Assoc

View full text Add to dashboard Cite

A widely used method of calculating storm runoff developed by the Soil Conservation Service (SCS) uses storm rainfal and a curve number. A curve number is a quantitative descriptor of the land cover/soil complex and is commonly assigned based on information acquired from field surveys and interpretations of aerial photographs. Since these techniques are prohibitively expensive and time consuming for large watersheds, digital data from the Landsat‐1 satellite was used to estimate curve numbers for the Little River watershed near Tifton, Georgia, an area of about 125 square miles. A classification map of this area with four hydrologically important classes (agricultural vegetation, forest, wetland, and bare ground) was generated from the Landsat data. Since the soils data necessary for curve numbers were available for only about half the watershed, the missing soils data were interpolated from the vegetation patterns of the classification map. A modification of the SCS curve number table was developed and used to assign each pixel to a category. The average curve number for‘each of six subwatersheds and for the entire watershed was then computed and compared with SCS values for the same areas. Agreement was to within two curve number units.

show abstract

Urban water resources

Cited by 3 publications

References 3 publications

Developing environmental standards for abstractions from UK rivers to implement the EU Water Framework Directive / Développement de standards environnementaux sur les prélèvements d'eau en rivière au Royaume Uni pour la mise en œuvre de la directive cadre sur l'eau de l'Union Européenne

Developing environmental standards for abstractions from UK rivers to implement the EU Water Framework Directive / Développement de standards environnementaux sur les prélèvements d'eau en rivière au Royaume Uni pour la mise en œuvre de la directive cadre sur l'eau de l'Union Européenne

Urban hydrology

SOIL CONSERVATION SERVICE RUNOFF CURVE NUMBER ESTIMATES FROM LANDSAT DATA¹

Contact Info

Product

Resources

About

Urban water resources

Cited by 3 publications

References 3 publications

Developing environmental standards for abstractions from UK rivers to implement the EU Water Framework Directive / Développement de standards environnementaux sur les prélèvements d'eau en rivière au Royaume Uni pour la mise en œuvre de la directive cadre sur l'eau de l'Union Européenne

Developing environmental standards for abstractions from UK rivers to implement the EU Water Framework Directive / Développement de standards environnementaux sur les prélèvements d'eau en rivière au Royaume Uni pour la mise en œuvre de la directive cadre sur l'eau de l'Union Européenne

Urban hydrology

SOIL CONSERVATION SERVICE RUNOFF CURVE NUMBER ESTIMATES FROM LANDSAT DATA1

Contact Info

Product

Resources

About

SOIL CONSERVATION SERVICE RUNOFF CURVE NUMBER ESTIMATES FROM LANDSAT DATA¹