en:projects:swakop:start
Unterschiede
Hier werden die Unterschiede zwischen zwei Versionen der Seite angezeigt.
| Beide Seiten, vorherige ÜberarbeitungVorherige ÜberarbeitungNächste Überarbeitung | Vorherige Überarbeitung | ||
| en:projects:swakop:start [2016/10/03 21:50] – ckuells | en:projects:swakop:start [2024/04/10 10:03] (aktuell) – Externe Bearbeitung 127.0.0.1 | ||
|---|---|---|---|
| Zeile 6: | Zeile 6: | ||
| The current and planned activities in the Swakop Basin will have strong impacts on the availability and quality of water resources. In order to minimize negative impacts and to develop environmentally sound strategies for social and economic development it is of paramount importance to understand the distribution and quality of water resources, sources of undesirable substances and the processes affecting them. A Strategic Environmental Assessment (SEA) has been initiated that assesses all the sector development scenarios in the Swakop Basin, where further water quality assessment has to be integrated. One part of this SEA is a Water Quality Balance Study for the River Catchments which aims at providing information on the water quality balance, groundwater availability from the alluvial aquifers and surface water resources and their contents, and to make future recommendations for remediation and abstraction constraints so that ecosystems and future water usage are not negatively impacted. This Water Quality Balance Study for the Swakop River Basin aims at providing information to the SEA (and SEMP) on the water quality balance for surface- and groundwater availability, | The current and planned activities in the Swakop Basin will have strong impacts on the availability and quality of water resources. In order to minimize negative impacts and to develop environmentally sound strategies for social and economic development it is of paramount importance to understand the distribution and quality of water resources, sources of undesirable substances and the processes affecting them. A Strategic Environmental Assessment (SEA) has been initiated that assesses all the sector development scenarios in the Swakop Basin, where further water quality assessment has to be integrated. One part of this SEA is a Water Quality Balance Study for the River Catchments which aims at providing information on the water quality balance, groundwater availability from the alluvial aquifers and surface water resources and their contents, and to make future recommendations for remediation and abstraction constraints so that ecosystems and future water usage are not negatively impacted. This Water Quality Balance Study for the Swakop River Basin aims at providing information to the SEA (and SEMP) on the water quality balance for surface- and groundwater availability, | ||
| + | |||
| + | ===== Background ===== | ||
| Namibia is one of the most arid countries in the world with more than 80% of the country being desert or semi-desert (Lahnsteiner et al. 2007a). Only five rivers, situated along its northern and southern borders, are perennial. Within the country the numerous rivers are all ephemeral and only flow after intense rainfall. With its total length of about 460 km the Swakop River is one of the biggest ephemeral rivers of Namibia, rising at the Khomas Highland and draining westwards into the Atlantic Ocean, south of Swakopmund. The Swakop drains a catchment area of 30,100 km² extending from the mouth into the Atlantic Ocean at Swakopmund over Otjimbingwe and in the east to about 50 km from Okahandja, and in the south to Khomas Highlands outside Windhoek. The highest point of the watershed is located at 2480 m. Annual rainfall varies from 0 mm in the lower reaches up to 475 mm in the eastern Khomas Highlands. 39% of the catchment area experiences rainfall that exceeds 300 mm per year, and up to 80% of the catchment experiences annual rainfall above 100 mm. The Swakop Basin has the most developed infrastructure in Namibia (CSIR 1997). Along many mines and farms it also comprises numerous towns including the capital of Namibia, Windhoek. | Namibia is one of the most arid countries in the world with more than 80% of the country being desert or semi-desert (Lahnsteiner et al. 2007a). Only five rivers, situated along its northern and southern borders, are perennial. Within the country the numerous rivers are all ephemeral and only flow after intense rainfall. With its total length of about 460 km the Swakop River is one of the biggest ephemeral rivers of Namibia, rising at the Khomas Highland and draining westwards into the Atlantic Ocean, south of Swakopmund. The Swakop drains a catchment area of 30,100 km² extending from the mouth into the Atlantic Ocean at Swakopmund over Otjimbingwe and in the east to about 50 km from Okahandja, and in the south to Khomas Highlands outside Windhoek. The highest point of the watershed is located at 2480 m. Annual rainfall varies from 0 mm in the lower reaches up to 475 mm in the eastern Khomas Highlands. 39% of the catchment area experiences rainfall that exceeds 300 mm per year, and up to 80% of the catchment experiences annual rainfall above 100 mm. The Swakop Basin has the most developed infrastructure in Namibia (CSIR 1997). Along many mines and farms it also comprises numerous towns including the capital of Namibia, Windhoek. | ||
/usr/www/users/uhydro/doku/data/attic/en/projects/swakop/start.1475524209.txt.gz · Zuletzt geändert: 2024/04/10 10:18 (Externe Bearbeitung)