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Freshwater requirements of Knysna Estuary
The hydrology of the 335 km 2 catchment of the Knysna River is described using several standard techniques, including those described in Hydrological Research Unit Reports Nos 2/76, 1/72 and 2/78. The mean annual . 6 -1 run-off at the farm Charles ford is about 61 x 10 m3 an. . Salinity measurements...
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| Format: | Thesis |
| Language: | English |
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Department of Environmental and Geographical Science
2023
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| _version_ | 1867613230420983808 |
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| access_status_str | Open Access |
| author | Haw, Peter Macauly |
| author_browse | Haw, Peter Macauly |
| author_facet | Haw, Peter Macauly |
| author_sort | Haw, Peter Macauly |
| collection | Thesis |
| description | The hydrology of the 335 km 2 catchment of the Knysna River is described using several standard techniques, including those described in Hydrological Research Unit Reports Nos 2/76, 1/72 and 2/78. The mean annual . 6 -1 run-off at the farm Charles ford is about 61 x 10 m3 an. . Salinity measurements were made at various stations between January and June 1984. These data were used to calibrate and verify a 1-dimensiona~ mathematical model of the Knysna Estuary. The model showed that the salinity would rise to 36 parts per thousand at the Old Drift if the · river flow was stopped altogether. The model also shows that salinities drop to 1 or 2 parts per thousand at the National Road Bridge for three successive tides following a one-in-two-year flood -1 ( 40 m 3 s ) • The response of the biota to changing salinities is described using available literature. It appears that there will be a gradual decline in primary and secondary productivity if the river flow is reduced. Other management approaches to this problem as well as the ethical problem of reducing the freshwater inflow into an estuary are explored. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/38954 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:32:50.328Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2023 |
| publishDateRange | 2023 |
| publishDateSort | 2023 |
| publisher | Department of Environmental and Geographical Science |
| publisherStr | Department of Environmental and Geographical Science |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/38954 Freshwater requirements of Knysna Estuary Haw, Peter Macauly Hydrology The hydrology of the 335 km 2 catchment of the Knysna River is described using several standard techniques, including those described in Hydrological Research Unit Reports Nos 2/76, 1/72 and 2/78. The mean annual . 6 -1 run-off at the farm Charles ford is about 61 x 10 m3 an. . Salinity measurements were made at various stations between January and June 1984. These data were used to calibrate and verify a 1-dimensiona~ mathematical model of the Knysna Estuary. The model showed that the salinity would rise to 36 parts per thousand at the Old Drift if the · river flow was stopped altogether. The model also shows that salinities drop to 1 or 2 parts per thousand at the National Road Bridge for three successive tides following a one-in-two-year flood -1 ( 40 m 3 s ) • The response of the biota to changing salinities is described using available literature. It appears that there will be a gradual decline in primary and secondary productivity if the river flow is reduced. Other management approaches to this problem as well as the ethical problem of reducing the freshwater inflow into an estuary are explored. 2023-09-29T08:58:08Z 2023-09-29T08:58:08Z 1984 2023-09-29T07:48:07Z Master Thesis Masters MSc http://hdl.handle.net/11427/38954 eng application/pdf Department of Environmental and Geographical Science Faculty of Science |
| spellingShingle | Hydrology Haw, Peter Macauly Freshwater requirements of Knysna Estuary |
| thesis_degree_str | Master's |
| title | Freshwater requirements of Knysna Estuary |
| title_full | Freshwater requirements of Knysna Estuary |
| title_fullStr | Freshwater requirements of Knysna Estuary |
| title_full_unstemmed | Freshwater requirements of Knysna Estuary |
| title_short | Freshwater requirements of Knysna Estuary |
| title_sort | freshwater requirements of knysna estuary |
| topic | Hydrology |
| url | http://hdl.handle.net/11427/38954 |
| work_keys_str_mv | AT hawpetermacauly freshwaterrequirementsofknysnaestuary |