COMPARISON OF THE WATER-BALANCE FOR AN UNDEVELOPED AND A SUBURBAN CATCHMENT

被引：18

作者：

STEPHENSON, D

机构：

[1] Water Systems Research Group, University of the Witwatersrand, Johannesburg

来源：

HYDROLOGICAL SCIENCES JOURNAL-JOURNAL DES SCIENCES HYDROLOGIQUES | 1994年 / 39卷 / 04期

关键词：

D O I：

10.1080/02626669409492751

中图分类号：

TV21 [水资源调查与水利规划];

学科分类号：

081501 ;

摘要：

Two topographically similar adjacent catchments near Johannesburg, South Africa, one suburban, the other natural grassland, were monitored over a five year period to detect differences in runoff and hydrological balance. A network of raingauges, boreholes, flow gauges and water meters was installed. Evapotranspiration was modelled using observed weather data. Groundwater was estimated from tracer and other borehole tests. Surface runoff from the undeveloped and suburban catchments was 4 % and 15 % of rainfall respectively. Evapotranspiration was 63 % of rainfall for both catchments. Sewage outflow was 83 % of water consumption for the suburban catchment. Little change in water table level occurred in the suburban catchment, and garden watering probably balanced the high evaporation. Piped water supply was 16 % of the precipitation on the catchment.

引用

页码：295 / 307

页数：13

共 14 条

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