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Surface water in Witzenberg
In 2025, Witzenberg had 49.0 km² of open water on average, 33.2 km² of it nearly all year. The wettest year since 1984 was 2024 (63.7 km²); the driest 2004 (21.4 km²).
Open water seen on the ground from space: dams, lakes, rivers wide enough to see, pans, wetlands with open water and flooded fields. Each year, the Landsat satellites look at every 30 m spot many times; where the sky is clear, each look says water or not. The average water area counts each spot for the share of its clear looks that were wet. Permanent water was wet in more than 80% of the clear looks; seasonal water was wet at least once but less often than that.
What it isn’t: not how full a dam is (that is the Department of Water and Sanitation’s weekly level, by volume), not groundwater, not rain, and not water in pipes or tanks. Narrow rivers, water under trees or bridges and anything smaller than about 30 m are missed. A year with few clear looks (cloud, or the early years when fewer satellites flew) is less sure, and 1988 is missing everywhere because Digital Earth Africa does not have it: a missing year is left out, never counted as dry.
2025
- 49.0 km²Water on average0.46% of the land; 115% of the 1991 to 2020 average (42.6 km²)
- 33.2 km²PermanentWater in more than 80% of the clear looks
- 236 km²SeasonalWet at least once, but not most of the year
- 75%Of the place seenThe share with at least one clear look
The wettest and driest years
- 2024Wettest, 63.7 km²536 km² wet at some point
- 2004Driest, 21.4 km²9.82 km² permanent
Among the 40 years in which at least 90% as much of the place was seen as in its best year (1 less well seen year is left out), so a cloudy year cannot pass for a dry one.
Every year since 1984
Show the numbers
| When or what | Figure |
|---|---|
| 1984 | 63.0 km² on average, 48.5 km² permanent |
| 1985 | 36.1 km² on average, 36.1 km² permanent |
| 1986 | 40.3 km² on average, 32.6 km² permanent |
| 1987 | 25.5 km² on average, 18.4 km² permanent |
| 1988 | not held |
| 1989 | 36.5 km² on average, 14.4 km² permanent |
| 1990 | 53.8 km² on average, 21.4 km² permanent |
| 1991 | 52.6 km² on average, 18.6 km² permanent |
| 1992 | 54.6 km² on average, 27.4 km² permanent |
| 1993 | 54.9 km² on average, 25.6 km² permanent |
| 1994 | 41.6 km² on average, 14.9 km² permanent |
| 1995 | 38.5 km² on average, 15.9 km² permanent |
| 1996 | 53.0 km² on average, 21.2 km² permanent |
| 1997 | 55.2 km² on average, 21.7 km² permanent |
| 1998 | 40.4 km² on average, 24.0 km² permanent |
| 1999 | 34.7 km² on average, 16.2 km² permanent |
| 2000 | 38.2 km² on average, 19.3 km² permanent |
| 2001 | 38.5 km² on average, 10.7 km² permanent |
| 2002 | 43.1 km² on average, 27.5 km² permanent |
| 2003 | 32.4 km² on average, 19.0 km² permanent |
| 2004 | 21.4 km² on average, 9.82 km² permanent |
| 2005 | 35.6 km² on average, 7.71 km² permanent |
| 2006 | 41.9 km² on average, 15.5 km² permanent |
| 2007 | 42.6 km² on average, 19.4 km² permanent |
| 2008 | 60.2 km² on average, 37.6 km² permanent |
| 2009 | 61.5 km² on average, 36.8 km² permanent |
| 2010 | 42.5 km² on average, 29.1 km² permanent |
| 2011 | 41.5 km² on average, 19.5 km² permanent |
| 2012 | 42.8 km² on average, 22.7 km² permanent |
| 2013 | 53.9 km² on average, 29.0 km² permanent |
| 2014 | 56.7 km² on average, 38.0 km² permanent |
| 2015 | 40.0 km² on average, 24.3 km² permanent |
| 2016 | 35.5 km² on average, 13.5 km² permanent |
| 2017 | 25.4 km² on average, 13.0 km² permanent |
| 2018 | 33.3 km² on average, 9.47 km² permanent |
| 2019 | 30.8 km² on average, 16.7 km² permanent |
| 2020 | 36.0 km² on average, 13.9 km² permanent |
| 2021 | 44.6 km² on average, 21.1 km² permanent |
| 2022 | 41.2 km² on average, 24.4 km² permanent |
| 2023 | 62.5 km² on average, 28.0 km² permanent |
| 2024 | 63.7 km² on average, 34.6 km² permanent |
| 2025 | 49.0 km² on average, 33.2 km² permanent |
| Year | Water on average | Permanent | Seasonal | Wet at some point | Seen |
|---|---|---|---|---|---|
| 2025 | 49.0 km² | 33.2 km² | 236 km² | 269 km² | 75% |
| 2024 | 63.7 km² | 34.6 km² | 502 km² | 536 km² | 75% |
| 2023 | 62.5 km² | 28.0 km² | 702 km² | 730 km² | 75% |
| 2022 | 41.2 km² | 24.4 km² | 446 km² | 470 km² | 76% |
| 2021 | 44.6 km² | 21.1 km² | 436 km² | 457 km² | 76% |
| 2020 | 36.0 km² | 13.9 km² | 265 km² | 279 km² | 75% |
| 2019 | 30.8 km² | 16.7 km² | 177 km² | 194 km² | 75% |
| 2018 | 33.3 km² | 9.47 km² | 313 km² | 323 km² | 75% |
| 2017 | 25.4 km² | 13.0 km² | 246 km² | 259 km² | 76% |
| 2016 | 35.5 km² | 13.5 km² | 239 km² | 252 km² | 75% |
| 2015 | 40.0 km² | 24.3 km² | 185 km² | 209 km² | 75% |
| 2014 | 56.7 km² | 38.0 km² | 223 km² | 261 km² | 75% |
| 2013 | 53.9 km² | 29.0 km² | 174 km² | 203 km² | 75% |
| 2012 | 42.8 km² | 22.7 km² | 94.4 km² | 117 km² | 75% |
| 2011 | 41.5 km² | 19.5 km² | 122 km² | 141 km² | 75% |
| 2010 | 42.5 km² | 29.1 km² | 60.7 km² | 89.8 km² | 75% |
| 2009 | 61.5 km² | 36.8 km² | 117 km² | 154 km² | 75% |
| 2008 | 60.2 km² | 37.6 km² | 99.2 km² | 137 km² | 75% |
| 2007 | 42.6 km² | 19.4 km² | 120 km² | 140 km² | 75% |
| 2006 | 41.9 km² | 15.5 km² | 162 km² | 177 km² | 75% |
| 2005 | 35.6 km² | 7.71 km² | 249 km² | 257 km² | 75% |
| 2004 | 21.4 km² | 9.82 km² | 65.6 km² | 75.5 km² | 75% |
| 2003 | 32.4 km² | 19.0 km² | 62.3 km² | 81.3 km² | 75% |
| 2002 | 43.1 km² | 27.5 km² | 73.0 km² | 101 km² | 75% |
| 2001 | 38.5 km² | 10.7 km² | 113 km² | 124 km² | 75% |
| 2000 | 38.2 km² | 19.3 km² | 109 km² | 128 km² | 75% |
| 1999 | 34.7 km² | 16.2 km² | 84.4 km² | 101 km² | 75% |
| 1998 | 40.4 km² | 24.0 km² | 67.1 km² | 91.1 km² | 75% |
| 1997 | 55.2 km² | 21.7 km² | 165 km² | 187 km² | 75% |
| 1996 | 53.0 km² | 21.2 km² | 237 km² | 258 km² | 75% |
| 1995 | 38.5 km² | 15.9 km² | 139 km² | 154 km² | 75% |
| 1994 | 41.6 km² | 14.9 km² | 98.6 km² | 113 km² | 75% |
| 1993 | 54.9 km² | 25.6 km² | 258 km² | 284 km² | 75% |
| 1992 | 54.6 km² | 27.4 km² | 199 km² | 226 km² | 75% |
| 1991 | 52.6 km² | 18.6 km² | 246 km² | 265 km² | 75% |
| 1990 | 53.8 km² | 21.4 km² | 204 km² | 225 km² | 75% |
| 1989 | 36.5 km² | 14.4 km² | 178 km² | 193 km² | 75% |
| 1987 | 25.5 km² | 18.4 km² | 14.0 km² | 32.4 km² | 75% |
| 1986 | 40.3 km² | 32.6 km² | 16.3 km² | 48.9 km² | 75% |
| 1985 | 36.1 km² | 36.1 km² | none | 36.1 km² | 61% |
| 1984 | 63.0 km² | 48.5 km² | 42.0 km² | 90.5 km² | 75% |
A year missing from the table is one Digital Earth Africa does not have for this place (1988 everywhere, 1985 in some places).
Each ward
- Ward 1 (Nduli)
- Ward 2 (Breërivier, Montana)
- Ward 3 (Ceres)
- Ward 4 (Prince Alfred Hamlet)
- Ward 5 (Botha, Ceres)
- Ward 6 (Bella Vista)
- Ward 7 (Tulbaghweg, Wolseley)
- Ward 8 (Op die Berg, Remhoogte)
- Ward 9
- Ward 10 (Prince Alfred Hamlet)
- Ward 11 (Tulbagh, Chris Hani Informal Settlement)
- Ward 12 (Tankwa Town, Off Centre Camp)
Places in each ward: © OpenStreetMap contributors.
Every municipality, ranked · Everything we hold for Witzenberg · On the explore map
Source
Measured from space by the American Landsat satellites: not a survey on the ground.
Credits and how we worked this out
Water Observations from Space, Digital Earth Africa (CC BY 4.0), modified: we counted each 30 m pixel over every 2026 ward and added the wards up into municipalities, districts and provinces. Under CC BY 4.0, from the AWS Registry of Open Data.
Landsat imagery courtesy of the U.S. Geological Survey.
Mueller, N. and others (2016): Water observations from space: mapping surface water from 25 years of Landsat imagery across Australia, Remote Sensing of Environment 174, 341 to 352.
Dataset: surface water by ward, release of 12 November 2026.