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| Content Provider | Springer Nature Link |
|---|---|
| Author | Oel, Pieter R. Mulatu, Dawit W. Odongo, Vincent O. Meins, Frank M. Hogeboom, Rick J. Becht, Robert Stein, Alfred Onyando, Japheth O. Veen, Anne |
| Copyright Year | 2013 |
| Abstract | This study discusses the effects of water abstractions from two alternative sources on the available water volume around Lake Naivasha, Kenya: the lake itself and a connected aquifer. An estimation of the water abstraction pattern for the period 1999–2010 is made and its effect on the available water volume in Lake Naivasha and its connected aquifer is evaluated using a simple water balance modeling approach. This study shows that accurate estimates of annual volume changes of Lake Naivasha can be made using a simple monthly water balance approach that takes into account the exchange of water between the lake and its connected aquifer. The amount of water that is used for irrigation in the area around Lake Naivasha has a substantial adverse effect on the availability of water. Simulation results of our simple water balance model suggests that abstractions from groundwater affect the lake volume less than direct abstractions from the lake. Groundwater volumes, in contrast, are much more affected by groundwater abstractions and therefore lead to much lower groundwater levels. Moreover, when groundwater is used instead of surface water, evaporation losses from the lake are potentially higher due to a larger lake surface area. If that would be the case then the overall water availability in the area is more strongly affected by the abstraction of groundwater than by the abstraction of surface water. Therefore water managers should be cautious when using lake levels as the only indicator of water availability for restricting water abstractions. |
| Starting Page | 3477 |
| Ending Page | 3492 |
| Page Count | 16 |
| File Format | |
| ISSN | 09204741 |
| Journal | Water Resources Management |
| Volume Number | 27 |
| Issue Number | 9 |
| e-ISSN | 15731650 |
| Language | English |
| Publisher | Springer Netherlands |
| Publisher Date | 2013-04-28 |
| Publisher Institution | European Water Resources Association (EWRA) |
| Publisher Place | Dordrecht |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Lake Naivasha Water balance model Water use Irrigation Groundwater Hydrogeology Geotechnical Engineering & Applied Earth Sciences Atmospheric Sciences Civil Engineering Environment |
| Content Type | Text |
| Resource Type | Article |
| Subject | Water Science and Technology Civil and Structural Engineering |
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