Inferring changes in dynamic groundwater storage from recession curve analysis of discharge data

• Authors: Urszula Somorowska

Abstracts

EN

Groundwater storage is an important element of terrestrial water storage. It influences the baseflow component of the river discharge which constitutes the majority of the outflow of Polish rivers. An evaluation of changes in the dynamic groundwater storage from point measurements of groundwater levels is usually a difficult task as groundwater data are scarce in time and space. Alternative approach involves recession curve analysis of discharge data. This study describes an approach to estimate the long-term changes in dynamic groundwater storage from daily discharges on a basin scale. Recession curve analysis is applied for identification of groundwater system functioning through derivation of master recession curve. The Master Recession Curve Tool developed by Lamb is used for automate analysis. Then results are coupled with a concept of nonlinear reservoir expressing discharge-storage relationship. As a result the volume of the groundwater storage and its temporal changes are derived on a yearly base, as a difference between highest values of storage during spring season and lowest values appearing in late summer or early autumn. The results show high annual variability of dynamic groundwater storage. The approach is presented on the example of lowland basin situated in central Poland, on the Mazovian Lowland (N 52°14' - N 52°14' and E 11°10' - E 11°10').

Keywords

EN

baseflow; master recession curve; dynamic groundwater storage

• Publisher: Wydział Geografii i Studiów Regionalnych Uniwersytetu Warszawskiego
• Journal: Miscellanea Geographica. Regional Studies on Development
• Year: 2004
• Volume: 11
• Pages: 161-168

Dates

published

2004

Contributors

author

Urszula Somorowska

References

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• J o k i e l P., 1994, Zastosowanie wzorcowej krzywej wysychania do oceny zasobów wód podziemnych i ich odnawialności [Application of standard groundwater recession curve for appraisal of underground water resources and their renewal], Wiadomości IMGW, T. XVII, 1, 31 - 54.
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• To m a s z e w s k i E., 2001, Sezonowe zmiany odpływu podziemnego w Polsce w latach 1971 - 1990 [Seasonal changes of groundwater flow in Poland in the period 1971 - 1990], Acta Geographica Lodziensia, No 78. Łódzkie Towarzystwo Naukowe, Łódź.
• W i t t e n b e r g H., 1999, Baseflow recession and recharge as nonlinear storage process, Hydrological Processes, 13, 715 - 726.
• W i t t e n b e r g H., S i v a p a l a n M., 1999, Watershed groundwater balance estimation using streamflow recession analysis and baseflow separation, J. of Hydrology, 219, 20 - 33.

Identifiers

Biblioteka Nauki

2029387