watersearch

Corriemoor Reservoir

A reservoir. What Johannesburg Water (JW) reported about it, from March 2025.

Latest JW report

JW reported supplying adequately on 29 September 2026 at 20:40. The board read “Supplying adequately.” JW put it on its website 1 October 2026 at 13:40. JW's page for this board ↗ · JW's image of the board ↗

Live updates during the day: Johannesburg Water ↗ and OurPower ↗. This page keeps the history.

Suburbs it supplies

JW links 6 suburbs to Corriemoor Reservoir. Most also draw on other supplies.

Berario, Blackheath, Fairland, Northcliff, Quellerina, Valeriedene.

Up the supply chain

On 16 September 2026, JW reported Corriemoor Reservoir critically low

Where the water comes from, top to bottom, and what JW reported for each part on 16 September 2026. A suburb draws on every supply listed at once; JW does not say which street each one reaches.

Showing 16 September 2026. Other days: 16 September 2026, 25 August 2026, 18 July 2026, or the last day.

Bulk supply

Unknown

Corriemoor Reservoir: no public JW source names its system or the Rand Water station that feeds it

System

Unknown

No public JW source names the system for these supplies.

Supply

Corriemoor Reservoir

JW reported critically low at 09:40, then supplying fairly at 15:00.

As printed: “09:40 Critically low.”; “15:00 Supplying fairly.”

JW's reported status of the reservoir or tower, not measured water at taps. Boards from March 2025.

Source: Johannesburg Water's System Update boards and notices, read by us. How this record is made.

Cite this figure

watersearch (2026). “On 16 September 2026, JW reported Corriemoor Reservoir critically low”. Data release 2026-09-29-318d9dca. https://watersearch.co.za/reservoir/corriemoor-reservoir#fig-chain

The data as a table
PartWhat it isFeedsHow we knowOn 16 September 2026
UnknownChain stopsthe systemCorriemoor Reservoir: no public JW source names its system or the Rand Water station that feeds itNo JW status for it
Corriemoor ReservoirReservoirJW's page or noticecritically low

Corriemoor Reservoir over time

In 2026 so far, JW reported Corriemoor Reservoir short of water on 3 days

What JW reported each day, 3 March 2025 to 29 September 2026, one row a month; the number at the right is the month's days short of water. Based on 246 days with a JW report. A day counts as short of water when JW's worst report for it that day was “poor pressure to no water” or “critically low”. Gaps: Corriemoor Reservoir: no report from 25 July 2025 to 13 March 2026.

2025
Mar3 Mar: supplying adequately4 Mar: no report5 Mar: supplying adequately6 Mar: supplying adequately7 Mar: supplying adequately8 Mar: supplying adequately9 Mar: supplying adequately10 Mar: no report11 Mar: supplying adequately12 Mar: supplying adequately13 Mar: supplying adequately14 Mar: supplying adequately15 Mar: no report16 Mar: no report17 Mar: supplying adequately18 Mar: supplying adequately19 Mar: supplying adequately20 Mar: supplying adequately21 Mar: no report22 Mar: no report23 Mar: no report24 Mar: supplying adequately25 Mar: supplying adequately26 Mar: supplying adequately27 Mar: supplying adequately28 Mar: no report29 Mar: no report30 Mar: no report31 Mar: no report0
Apr1 Apr: supplying adequately2 Apr: supplying adequately3 Apr: supplying adequately4 Apr: supplying adequately5 Apr: no report6 Apr: no report7 Apr: supplying adequately8 Apr: no report9 Apr: supplying adequately10 Apr: supplying adequately11 Apr: supplying adequately12 Apr: no report13 Apr: no report14 Apr: no report15 Apr: no report16 Apr: no report17 Apr: supplying adequately18 Apr: supplying adequately19 Apr: supplying adequately20 Apr: supplying adequately21 Apr: supplying adequately22 Apr: supplying adequately23 Apr: supplying adequately24 Apr: supplying adequately25 Apr: supplying adequately26 Apr: supplying adequately27 Apr: supplying adequately28 Apr: supplying adequately29 Apr: supplying adequately30 Apr: supplying adequately0
May1 May: supplying adequately2 May: supplying adequately3 May: supplying adequately4 May: no report5 May: supplying adequately6 May: supplying adequately7 May: no report8 May: no report9 May: supplying adequately10 May: supplying adequately11 May: supplying adequately12 May: supplying adequately13 May: supplying adequately14 May: supplying adequately15 May: supplying adequately16 May: no report17 May: no report18 May: no report19 May: no report20 May: no report21 May: overnight closure22 May: no report23 May: supplying adequately24 May: no report25 May: no report26 May: supplying adequately27 May: no report28 May: no report29 May: no report30 May: no report31 May: no report0
Jun1 Jun: no report2 Jun: no report3 Jun: no report4 Jun: no report5 Jun: no report6 Jun: supplying fairly7 Jun: supplying fairly8 Jun: supplying fairly9 Jun: supplying fairly10 Jun: supplying fairly11 Jun: supplying fairly12 Jun: supplying fairly13 Jun: supplying fairly14 Jun: supplying fairly15 Jun: supplying fairly16 Jun: supplying adequately17 Jun: supplying adequately18 Jun: supplying adequately19 Jun: supplying adequately20 Jun: supplying adequately21 Jun: supplying adequately22 Jun: supplying adequately23 Jun: supplying adequately24 Jun: supplying adequately25 Jun: supplying fairly26 Jun: supplying fairly27 Jun: no report28 Jun: no report29 Jun: no report30 Jun: no report0
Jul1 Jul: no report2 Jul: no report3 Jul: no report4 Jul: no report5 Jul: no report6 Jul: no report7 Jul: no report8 Jul: no report9 Jul: no report10 Jul: no report11 Jul: supplying adequately12 Jul: supplying adequately13 Jul: supplying adequately14 Jul: supplying adequately15 Jul: no report16 Jul: no report17 Jul: no report18 Jul: no report19 Jul: overnight closure20 Jul: supplying adequately21 Jul: supplying adequately22 Jul: no report23 Jul: no report24 Jul: overnight closure25 Jul: no report26 Jul: no report27 Jul: no report28 Jul: no report29 Jul: no report30 Jul: no report31 Jul: no report0
AugNo JW boards, Aug 2025 to Feb 2026
2026
Mar1 Mar: no report2 Mar: no report3 Mar: no report4 Mar: no report5 Mar: no report6 Mar: no report7 Mar: no report8 Mar: no report9 Mar: no report10 Mar: no report11 Mar: no report12 Mar: no report13 Mar: no report14 Mar: supplying fairly15 Mar: no report16 Mar: supplying adequately17 Mar: no report18 Mar: no report19 Mar: no report20 Mar: no report21 Mar: no report22 Mar: no report23 Mar: no report24 Mar: no report25 Mar: no report26 Mar: no report27 Mar: no report28 Mar: no report29 Mar: no report30 Mar: supplying fairly31 Mar: supplying fairly0
Apr1 Apr: supplying adequately2 Apr: no report3 Apr: supplying adequately4 Apr: no report5 Apr: no report6 Apr: supplying fairly7 Apr: no report8 Apr: supplying adequately9 Apr: supplying adequately10 Apr: supplying adequately11 Apr: supplying adequately12 Apr: supplying adequately13 Apr: supplying adequately14 Apr: supplying adequately15 Apr: supplying adequately16 Apr: supplying adequately17 Apr: supplying adequately18 Apr: supplying adequately19 Apr: supplying adequately20 Apr: supplying adequately21 Apr: supplying adequately22 Apr: supplying adequately23 Apr: supplying adequately24 Apr: supplying adequately25 Apr: supplying adequately26 Apr: supplying adequately27 Apr: supplying adequately28 Apr: supplying adequately29 Apr: supplying adequately30 Apr: supplying adequately0
May1 May: supplying adequately2 May: supplying adequately3 May: supplying adequately4 May: supplying adequately5 May: supplying adequately6 May: supplying adequately7 May: supplying adequately8 May: supplying adequately9 May: supplying adequately10 May: supplying adequately11 May: overnight closure12 May: supplying adequately13 May: supplying adequately14 May: supplying adequately15 May: supplying adequately16 May: supplying adequately17 May: supplying adequately18 May: supplying adequately19 May: supplying adequately20 May: supplying adequately21 May: supplying adequately22 May: supplying adequately23 May: supplying adequately24 May: supplying adequately25 May: overnight closure26 May: supplying adequately27 May: supplying adequately28 May: supplying adequately29 May: supplying adequately30 May: supplying fairly31 May: supplying fairly0
Jun1 Jun: supplying fairly2 Jun: supplying fairly3 Jun: supplying fairly4 Jun: supplying fairly5 Jun: supplying fairly6 Jun: supplying fairly7 Jun: supplying adequately8 Jun: supplying adequately9 Jun: supplying adequately10 Jun: supplying adequately11 Jun: supplying adequately12 Jun: supplying adequately13 Jun: supplying adequately14 Jun: supplying adequately15 Jun: supplying adequately16 Jun: supplying adequately17 Jun: supplying adequately18 Jun: supplying adequately19 Jun: supplying adequately20 Jun: supplying adequately21 Jun: supplying adequately22 Jun: supplying adequately23 Jun: supplying adequately24 Jun: supplying adequately25 Jun: supplying adequately26 Jun: supplying adequately27 Jun: supplying adequately28 Jun: supplying adequately29 Jun: supplying adequately30 Jun: supplying adequately0
Jul1 Jul: supplying adequately2 Jul: no report3 Jul: supplying adequately4 Jul: supplying adequately5 Jul: supplying adequately6 Jul: supplying adequately7 Jul: supplying adequately8 Jul: supplying adequately9 Jul: supplying adequately10 Jul: supplying adequately11 Jul: supplying adequately12 Jul: supplying adequately13 Jul: supplying adequately14 Jul: supplying adequately15 Jul: supplying adequately16 Jul: low17 Jul: low18 Jul: critically low19 Jul: low20 Jul: supplying fairly21 Jul: supplying adequately22 Jul: supplying adequately23 Jul: supplying adequately24 Jul: supplying adequately25 Jul: supplying adequately26 Jul: supplying adequately27 Jul: supplying adequately28 Jul: supplying adequately29 Jul: supplying adequately30 Jul: supplying adequately31 Jul: supplying adequately1
Aug1 Aug: no report2 Aug: no report3 Aug: supplying adequately4 Aug: supplying adequately5 Aug: supplying adequately6 Aug: supplying adequately7 Aug: supplying adequately8 Aug: supplying adequately9 Aug: no report10 Aug: no report11 Aug: supplying adequately12 Aug: supplying adequately13 Aug: supplying adequately14 Aug: supplying adequately15 Aug: no report16 Aug: no report17 Aug: supplying adequately18 Aug: supplying adequately19 Aug: supplying adequately20 Aug: supplying adequately21 Aug: supplying adequately22 Aug: no report23 Aug: no report24 Aug: supplying adequately25 Aug: critically low26 Aug: supplying fairly27 Aug: supplying fairly28 Aug: supplying fairly29 Aug: no report30 Aug: no report31 Aug: supplying adequately1
Sep1 Sep: supplying adequately2 Sep: supplying adequately3 Sep: supplying adequately4 Sep: supplying adequately5 Sep: no report6 Sep: no report7 Sep: supplying adequately8 Sep: supplying adequately9 Sep: supplying adequately10 Sep: supplying adequately11 Sep: supplying adequately12 Sep: no report13 Sep: no report14 Sep: supplying adequately15 Sep: supplying fairly16 Sep: critically low17 Sep: supplying fairly18 Sep: supplying fairly19 Sep: no report20 Sep: no report21 Sep: supplying fairly22 Sep: supplying adequately23 Sep: supplying adequately24 Sep: no report25 Sep: supplying adequately26 Sep: no report27 Sep: no report28 Sep: supplying adequately29 Sep: supplying adequately1
  • water as normal
  • supplying fairly
  • JW warned
  • low, or weak in places
  • short of water
  • critically low
  • shut for the night
  • no JW report
  • still filling in

JW's reported status of the reservoir or tower, not measured water at taps. Boards from March 2025.

Source: Johannesburg Water's System Update boards and notices, read by us. How this record is made.

Cite this figure

watersearch (2026). “In 2026 so far, JW reported Corriemoor Reservoir short of water on 3 days”. Data release 2026-09-29-318d9dca. https://watersearch.co.za/reservoir/corriemoor-reservoir#fig-year

The data as a table
MonthDays reportedDays in recordAdequate or fairPoor pressure in places, or lowWarning: no water may occurPoor pressure to no waterCritically lowOvernight closure
March 202518291800000
April 202522302200000
May 202515311400001
June 202521302100000
July 2025831600002
August 2025031000000
September 2025030000000
October 2025031000000
November 2025030000000
December 2025031000000
January 2026031000000
February 2026028000000
March 2026431400000
April 202626302600000
May 202631312900002
June 202630303000000
July 202630312630010
August 202621312000010
September 202620291900010

From April to September 2026 (six months), JW reported Corriemoor Reservoir short of water on 3 of 158 reported days

Days per month short of water, stacked: critically low at the base. The tick is the median supply in the city that month. The strip under each bar is the share of days with a JW report; a month with none says gap. 3 March 2025 to 29 September 2026.

In 2026 so far: 3 days short of water for Corriemoor Reservoir, from 162 days with a report. The median supply in the city: 4 days.

102030Mar 2025: 0 days short of water, 0 critically low; reported 18 of 29 days2025MApr 2025: 0 days short of water, 0 critically low; reported 22 of 30 daysAMay 2025: 0 days short of water, 0 critically low; reported 15 of 31 daysMJun 2025: 0 days short of water, 0 critically low; reported 21 of 30 daysJJul 2025: 0 days short of water, 0 critically low; reported 8 of 31 daysJAug 2025: 0 days short of water, 0 critically low; reported 0 of 31 daysgapASep 2025: 0 days short of water, 0 critically low; reported 0 of 30 daysgapSOct 2025: 0 days short of water, 0 critically low; reported 0 of 31 daysgapONov 2025: 0 days short of water, 0 critically low; reported 0 of 30 daysgapNDec 2025: 0 days short of water, 0 critically low; reported 0 of 31 daysgapDJan 2026: 0 days short of water, 0 critically low; reported 0 of 31 daysgap2026JFeb 2026: 0 days short of water, 0 critically low; reported 0 of 28 daysgapFMar 2026: 0 days short of water, 0 critically low; reported 4 of 31 daysMApr 2026: 0 days short of water, 0 critically low; reported 26 of 30 daysAMay 2026: 0 days short of water, 0 critically low; reported 31 of 31 daysMJun 2026: 0 days short of water, 0 critically low; reported 30 of 30 daysJJul 2026: 1 day short of water, 1 critically low; reported 30 of 31 daysJAug 2026: 1 day short of water, 1 critically low; reported 21 of 31 daysASep 2026: 1 day short of water, 1 critically low; reported 20 of 29 daysScity median 0city median 0city median 0city median 0city median 0city median 0city median 0city median 0city median 0city median 1city median 0city median 0

JW's reported status of the reservoir or tower, not measured water at taps. Boards from March 2025.

Source: Johannesburg Water's System Update boards and notices, read by us. How this record is made.

Cite this figure

watersearch (2026). “From April to September 2026 (six months), JW reported Corriemoor Reservoir short of water on 3 of 158 reported days”. Data release 2026-09-29-318d9dca. https://watersearch.co.za/reservoir/corriemoor-reservoir#fig-days

The data as a table
MonthDays short of waterDays reportedDays in recordCity median
March 2025018290
April 2025022300
May 2025015310
June 2025021300
July 202508310
August 2025gap031
September 2025gap030
October 2025gap031
November 2025gap030
December 2025gap031
January 2026gap031
February 2026gap0280
March 202604310
April 2026026300
May 2026031310
June 2026030300
July 2026130311
August 2026121310
September 2026120290

On Corriemoor Reservoir, half of its last 3 outages were over within 19 hours

This is not a forecast. It is how long past outages lasted. Each dot is one past outage, placed by its length: the last 3 outages on Corriemoor Reservoir. A hollow dot with an arrow had no reported end: JW's reports stopped before it ended, or it was still going at JW's last report. Either way it lasted at least that long (0 of 3).

012daysFrom 16 September 2026: 5 hoursFrom 25 August 2026: 19 hoursFrom 18 July 2026: 25 hourslongest 25 hourshalf within 19 hoursHalf of its last 3 outages were over within 19 hours

JW's reported status of the reservoir or tower, not measured water at taps. Boards from March 2025.

Source: Johannesburg Water's System Update boards and notices, read by us. How this record is made.

Cite this figure

watersearch (2026). “On Corriemoor Reservoir, half of its last 3 outages were over within 19 hours”. Data release 2026-09-29-318d9dca. https://watersearch.co.za/reservoir/corriemoor-reservoir#fig-base-rate

The data as a table
StartedLengthEnded
16 September 20265 hours16 September 2026
25 August 202619 hours26 August 2026
18 July 202625 hours19 July 2026

JW's notices gave 1 end time for Corriemoor Reservoir. By the stated time, JW's boards showed the water back on none of the 1 that have passed

The water came back after the stated time 1 time; half of those times it was back within 106 days of it. Each row is one end time a JW notice stated for one supply, in date order (hollow dot), against the first board on which JW reported the supply supplying fairly or better and off bypass (filled dot). This asks more than the end of an outage, which comes at JW's first report better than “poor pressure to no water” or “critically low”. An arrow: no such board yet. From 1 notice.

Jan 2026Jul 2026last board 29 Sep 2026Stated end 28 Nov 2025 08:00; recovered 14 Mar 2026 09:30Stated end 28 Nov 2025: 106 days late

JW's reported status of the reservoir or tower, not measured water at taps. Boards from March 2025.

Source: Johannesburg Water's System Update boards and notices, read by us. How this record is made.

Cite this figure

watersearch (2026). “JW's notices gave 1 end time for Corriemoor Reservoir. By the stated time, JW's boards showed the water back on none of the 1 that have passed”. Data release 2026-09-29-318d9dca. https://watersearch.co.za/reservoir/corriemoor-reservoir#fig-stated

The data as a table
NoticeSupplyReason JW gaveStated endFirst board showing recoveryAgainst the stated time
27 November 2025Corriemoor Reservoir28 November 2025 08:0014 March 2026 09:30106 days 1 hour after the stated time

In words

2026 so far: JW reported it at “poor pressure to no water” or “critically low” on 3 days. JW published a report for it on 162 of the 272 days in the record; the other 110 days have no report, and we do not count them as normal. The median supply in the city had 4 such days.

2025: JW reported it at “poor pressure to no water” or “critically low” on 0 days. JW published a report for it on 84 of the 304 days in the record; the other 220 days have no report, and we do not count them as normal. The median supply in the city had 1 such day.

The last 3 outages JW reported on this supply lasted a median of 19 hours; the longest 25 hours. This is a record of the past, not a forecast.

JW's boards first named Corriemoor Reservoir on 3 March 2025 and last on 29 September 2026: 382 statuses on 382 boards, over 246 days. 24 of those statuses announced a scheduled overnight closure, which we count apart, never as an outage.

Month by month

Days JW reported Corriemoor Reservoir at “poor pressure to no water” or “critically low”, out of the days it reported it at all. A month with few reported days says little.

MonthDays short of waterDays with a reportSame month a year earlier
March 2025018
April 2025022
May 2025015
June 2025021
July 202508
August 2025No JW report this month
September 2025No JW report this month
October 2025No JW report this month
November 2025No JW report this month
December 2025No JW report this month
January 2026No JW report this month
February 2026No JW report this month
March 202604Too few reports to compare
April 20260260 of 22 days
May 20260310 of 15 days
June 20260300 of 21 days
July 2026130Too few reports to compare
August 2026121Too few reports to compare
September 2026120Too few reports to compare

Recent JW reports

The last 20 statuses JW printed for Corriemoor Reservoir, newest first.

JW reported supplying adequately on 29 September 2026 at 20:40. The board read “Supplying adequately.” JW put it on its website 1 October 2026 at 13:40. JW's page for this board ↗ · JW's image of the board ↗

JW reported supplying adequately on 29 September 2026 at 13:18. The board read “Supplying adequately.” JW put it on its website 1 October 2026 at 13:41. JW's page for this board ↗ · JW's image of the board ↗

JW reported supplying adequately on 28 September 2026 at 13:59. The board read “Supplying adequately.” JW put it on its website 1 October 2026 at 13:42. JW's page for this board ↗ · JW's image of the board ↗

No JW report since 25 September 2026. JW reported supplying adequately on 25 September 2026 at 19:25. The board read “Supplying adequately.” JW put it on its website 28 September 2026 at 10:32. JW's page for this board ↗ · JW's image of the board ↗

No JW report since 25 September 2026. JW reported supplying adequately on 25 September 2026 at 13:35. The board read “Supplying adequately.” JW put it on its website 28 September 2026 at 10:31. JW's page for this board ↗ · JW's image of the board ↗

No JW report since 23 September 2026. JW reported supplying adequately on 23 September 2026 at 18:50. The board read “Supplying adequately”. JW put it on its website 25 September 2026 at 10:40. JW's post ↗ · JW's image of the board ↗

No JW report since 23 September 2026. JW reported supplying adequately on 23 September 2026 at 11:30. The board read “Supplying adequately.” JW put it on its website 25 September 2026 at 10:40. JW's post ↗ · JW's image of the board ↗

No JW report since 22 September 2026. JW reported supplying adequately on 22 September 2026 at 10:55. The board read “Supplying adequately.” JW put it on its website 22 September 2026 at 15:41. JW's post ↗ · JW's image of the board ↗

No JW report since 21 September 2026. JW reported supplying adequately on 21 September 2026 at 18:36. The board read “Supplying adequately.” JW put it on its website 22 September 2026 at 14:09. JW's post ↗ · JW's image of the board ↗

No JW report since 21 September 2026. JW reported supplying fairly on 21 September 2026 at 13:50. The board read “Supplying fairly.” JW put it on its website 22 September 2026 at 14:08. JW's post ↗ · JW's image of the board ↗

No JW report since 18 September 2026. JW reported supplying fairly on 18 September 2026 at 16:15. The board read “Supplying fairly.” JW put it on its website 21 September 2026 at 09:06. JW's post ↗ · JW's image of the board ↗

No JW report since 18 September 2026. JW reported supplying fairly on 18 September 2026 at 10:20. The board read “Supplying fairly.” JW put it on its website 21 September 2026 at 09:04. JW's post ↗ · JW's image of the board ↗

No JW report since 17 September 2026. JW reported supplying fairly on 17 September 2026 at 15:25. The board read “Supplying fairly.” JW put it on its website 18 September 2026 at 10:41. JW's post ↗ · JW's image of the board ↗

No JW report since 17 September 2026. JW reported supplying fairly on 17 September 2026 at 09:25. The board read “Supplying fairly.” JW put it on its website 18 September 2026 at 10:40. JW's post ↗ · JW's image of the board ↗

No JW report since 16 September 2026. JW reported supplying fairly on 16 September 2026 at 15:00. The board read “Supplying fairly.” JW put it on its website 16 September 2026 at 15:56. JW's post ↗ · JW's image of the board ↗

No JW report since 16 September 2026. JW reported critically low on 16 September 2026 at 09:40. The board read “Critically low.” JW put it on its website 16 September 2026 at 15:52. JW's post ↗ · JW's image of the board ↗

No JW report since 15 September 2026. JW reported supplying fairly on 15 September 2026 at 16:45. The board read “Supplying fairly.” JW put it on its website 16 September 2026 at 10:17. JW's post ↗ · JW's image of the board ↗

No JW report since 15 September 2026. JW reported supplying fairly on 15 September 2026 at 10:25. The board read “Supplying fairly.” JW put it on its website 16 September 2026 at 10:11. JW's post ↗ · JW's image of the board ↗

No JW report since 14 September 2026. JW reported supplying adequately on 14 September 2026 at 10:35. The board read “Supplying adequately.” JW put it on its website 15 September 2026 at 11:24. JW's post ↗ · JW's image of the board ↗

No JW report since 11 September 2026. JW reported supplying adequately on 11 September 2026 at 11:14. The board read “Supplying adequately.” JW put it on its website 15 September 2026 at 10:58. JW's post ↗ · JW's image of the board ↗

Past outages

Each row is one outage: a stretch of time JW reported Corriemoor Reservoir at “poor pressure to no water” or “critically low”, newest first. An outage has no reported end when JW's reports stopped before it ended, or when it was still going at JW's last report; its length is then a minimum.

StartEndLength
16 Sep 2026, 09:4016 Sep 2026, 15:005 hours
25 Aug 2026, 14:4026 Aug 2026, 09:4619 hours
18 Jul 2026, 10:4519 Jul 2026, 11:3025 hours

What JW's boards cannot tell you

Source: JW's System Update boards and notices, read by us. The full list, and how this record is made.