Daily water balance modeling for investigating effectiveness of stormwater harvesting for golf course - Swinburne Research Bank : Open Access Repository

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Title: Daily water balance modeling for investigating effectiveness of stormwater harvesting for golf course
Author(s): Imteaz, Monzur Alam; Shanableh, Abdallah
Abstract: As an alternative water source, feasibility of collection and reuse of stormwater has been investigated for golf course irrigation in Western Sydney area. In order to visualize effectiveness of proposed stormwater harvesting, a numerical modelling and investigation was carried out using a daily water balance model. From historical data for the area, three calendar years were chosen as a dry year (1st decile), average year (5th decile) and wet year (9th decile). Mathematical model considered actual rainfall and contributing catchment area. Evaporation from water surface, evapo-transpiration and infiltration are considered as losses. Calculated runoff was routed through an existing pond/storage. Once pond became full, subsequent runoffs from the upstream catchments were lost from water storages through overflow. Water demand was calculated throughout the year, considering water requirements for existing grass types as well as number of rainy days. Through model simulation, cumulative water demands, available water volumes and water supply deficits were calculated for three different climatic conditions (ie. dry, average and wet) under different storage volumes and contributing catchment areas. It was found that none of the modeled scenarios were able to achieve a secure supply for golf course watering. If water is taken only from harvested storage, even in wet year there will be water supply deficit. However, if the pond storage volume is increased, stored stormwater would be able to meet some portion of irrigation water demand in average years and wet years. However, there would be virtually no demand met in a dry year. If storage volume is increased continually, at one stage increased storage volume will not provide any extra benefit due to lack of inflow from catchment. If catchment area is increased, although available water for irrigation will be increased, however water supply deficit will also increase due to increased area of golf course, which has to be irrigated also. With increased catchment area, in wet year available water is decreasing. This is because with the increased catchment area water demand increased, however stored water was not enough due to limited storage volume.
Publication Type: Conference paper
Research Centre: Swinburne University of Technology. Faculty of Engineering and Industrial Sciences
Source: Proceedings of the Australia's National Water Conference and Exhibition: From Challenges to Solutions (OzWater '09), Melbourne, Victoria, Australia, 16-18 March 2009
Publication Year: 2009
FOR Code(s): 090702 Environmental Engineering Modelling
Keyword(s): Catchment areas; Golf courses; Irrigation; Stormwater harvesting; Water storage
Publisher: Australian Water Association
Publisher URL: http://www.ozwater09.com.au/
Publisher URL: http://www.awa.asn.au/
Peer Reviewed