Seepage losses in the Coleambally Irrigation Area – loss estimates from channel automation data

Autor: Rod Smith, Malcolm Gillies, A. Moavenshahidi
Rok vydání: 2016
Předmět:
Zdroj: Australian Journal of Water Resources. 20:78-88
ISSN: 2204-227X
1324-1583
Popis: Seepage from open channels is a major source of water loss across all irrigation districts in Australia. Pondage tests are acknowledged as the best direct method for seepage measurement, and the recorded water-level data from automated systems during periods of gate closure can be treated as pondage test data. A computer model that applies pondage test methodology to automated channel control data during periods of shut down in order to estimate seepage rates in different channel reaches was developed recently by the authors. They also applied the model to the total channel control (TCC) data for the entire Coleambally Irrigation Area (CIA) during 2009–2012, and seepage rates for each depth gauge, pondage and pool were estimated. In this paper, the estimated seepage rates from the channel automation data are used to (i) estimate likely seepage rates under operational conditions and (ii) estimate total annual volumes of seepage loss. Comparison with seepage estimates from previous seepage studies i...
Databáze: OpenAIRE
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