Thames: groundwater situation

Thames: groundwater situation: 9 April 2024

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This document provides information on the groundwater situation for:

• West Berkshire
• North East Wiltshire
• Surrey
• Windsor
• Maidenhead
• North East Hampshire
• Buckinghamshire
• Vale of White Horse

Flooding from groundwater can happen when the level of water within the rock or soil that makes up the land surface (known as the water table) rises.

The level of the water table changes with the seasons due to variations in long term rainfall and water abstraction. When the water table rises and reaches ground level, water starts to emerge on the surface and flooding can happen.

Lead local flood authorities (the unitary authority or County Council) are responsible for managing the risk of flooding from groundwater. They set out how they plan to do this in their local flood risk management strategies.

The Environment Agency has a strategic overview for all sources of flooding including groundwater. This means they will provide support to other risk management authorities.

They supply information in the form of monitored groundwater levels. In some areas that have historically experienced groundwater flooding, the Environment Agency provide a groundwater alert or warning service.

1. 9 April 2024

   Updated the groundwater situation as of 9 April 2024.

2. 2 April 2024

   Updated the groundwater situation as of 2 April 2024.

3. 26 March 2024

   Updated the groundwater situation for 26 March 2024.

4. 19 March 2024

   Updated the groundwater situation as of 19 March 2024.

5. 12 March 2024

   Groundwater situation updated for 12 March.

6. 7 March 2024

   Updated the groundwater situation as of 5 March 2024.

7. 1 March 2024

   Updated the groundwater situation as of 1 March 2024.

8. 27 February 2024

   Updated the groundwater situation as of 27 February 2024.

9. 20 February 2024

   Updated with briefing dated 20 February 2024.

10. 13 February 2024

    Added the latest (13 February 2024) groundwater situation for the Thames area.

11. 6 February 2024

    Added the latest (6 February 2024) groundwater situation for the Thames area.

12. 31 January 2024

    Updated with briefing dated 30 January 2024.

13. 24 January 2024

    Updated with briefing 23 January 2024

14. 16 January 2024

    Updated with briefing dated 16 January 2024.

15. 12 January 2024

    Updated with briefing dated 12 January 2024.

16. 10 January 2024

    Updated with briefing dated 10 January 2024.

17. 5 January 2024

    Updated with briefing dated 5 January 2024.

18. 2 January 2024

    Updated with briefing dated 2 January 2024.

19. 27 December 2023

    Updated with briefing dated 27 December 2023.

20. 19 December 2023

    Updated with briefing dated 19 December 2023

21. 12 December 2023

    Updated with briefing dated 12 December 2023

22. 5 December 2023

    Updated with briefing dated 5 December 2023

23. 28 November 2023

    Updated with briefing dated 28 November 2023

24. 22 November 2023

    Updated with briefing dated 21 November 2023

25. 15 November 2023

    Updated with briefing note 14 November 2023.

26. 8 November 2023

    Updated with latest briefing dated 7 November 2023.

27. 2 November 2023

    Updated with groundwater briefing - dated 01 November 2023.

28. 23 May 2023

    Updated with latest briefing 23 May 2023.

29. 16 May 2023

    Updated with a briefing dated 16 May 2023.

30. 9 May 2023

    Updated with briefing dated 9 May 2023.

31. 2 May 2023

    Updated with briefing dated 2 May 2023.

32. 25 April 2023

    Updated with briefing dated 25 April 2023.

33. 18 April 2023

    Updated with briefing dated 18 April 2023.

34. 17 April 2023

    Updated with briefing dated 11 April 2023.

35. 5 April 2023

    Updated with briefing dated 4 April 2023.

36. 29 March 2023

    Updated with briefing dated 28 March 2023.

37. 21 March 2023

    Updated with briefing dated 21 March 2023.

38. 14 March 2023

    Updated with briefing dated 14 March 2023.

39. 8 March 2023

    Updated with briefing dated 7 March 2023.

40. 28 February 2023

    Updated with briefing dated 28 February 2023.

41. 23 February 2023

    Updated 21 February 2023 with latest briefing.

42. 14 February 2023

    Latest briefing added for 14 February 2023.

43. 7 February 2023

    Updated with briefing dated 7 February 2023.

44. 1 February 2023

    Updated with briefing dated 31 January 2023.

45. 24 January 2023

    Updating with briefing dated 24 January 2023.

46. 20 January 2023

    We have published an updated briefing note.

47. 18 January 2023

    We have published an updated briefing note.

48. 10 January 2023

    Updated groundwater situation 10 January 2023.

49. 4 January 2023

    Updated groundwater situation 4 January 2023.

50. 4 May 2021

    Update 04 May added.

51. 20 April 2021

    20 April update added.

52. 29 March 2021

    Updated groundwater situation 29 March 2021

53. 22 March 2021

    22 March groundwater situation update.

54. 15 March 2021

    Updated groundwater situation 15 March 2021.

55. 8 March 2021

    Updated groundwater situation 8 March 2021

56. 1 March 2021

    Updated groundwater situation 1 March 2021.

57. 22 February 2021

    Update groundwater situation 22 Feb.

58. 15 February 2021

    Updated groundwater situation 15 February 2021.

59. 8 February 2021

    Thames groundwater situation updated 08 Feb 2021.

60. 3 February 2021

    Updated groundwater situation 02 Feb 2021.

61. 25 January 2021

    Thames groundwater briefing note 25 January 2021

62. 21 January 2021

    Updated with briefing note 18 January 2021.

63. 12 January 2021

    Weekly update for 11 Januray 2021

64. 6 January 2021

    Update 6 January 2021 with latest briefing.

65. 30 December 2020

    Briefing note updated on 30 December 2020.

66. 24 December 2020

    New groundwater briefing note added.

67. 2 June 2020

    Update 01 June added - all alerts removed.

68. 27 May 2020

    Added 26 May 2020 update.

69. 18 May 2020

    18 May update added.

70. 12 May 2020

    Updated 11 May 2020.

71. 4 May 2020

    Page updated with the latest briefing. In the Wycombe area including Radnage and the lower Hughenden Valley, the groundwater flood alert will be removed on Monday 4 May 2020.

72. 6 April 2020

    Updated with latest briefing 6 April 2020.

73. 31 March 2020

    Updated with briefing 30 March 2020

74. 25 March 2020

    Updated with latest briefing 23 March 2020.

75. 17 March 2020

    Briefing note added for 16 March 2020

76. 10 March 2020

    Briefing added for 10 March 2020

77. 3 March 2020

    Updated with briefing dated 2 March 2020.

78. 25 February 2020

    Updated with briefing dated 24 February 2020.

79. 18 February 2020

    Updated with latest briefing, 17 February 2020

80. 10 February 2020

    Updated with latest briefing 10 February 2020

81. 3 February 2020

    03 February 2020 update

82. 28 January 2020

    Updated with latest situation and forecast 28 January 2020.

83. 22 January 2020

    Updated 21 January 2020 with current situation and forecast.

84. 13 January 2020

    Updated with briefing dated 13 January 2020.

85. 7 January 2020

    Briefing note dated 6 January 2020 added.

86. 30 December 2019

    Added the latest update (30 December 2019).

87. 23 December 2019

    Briefing note dated 23 December 2019 added.

88. 16 December 2019

    Latest information added - dated 16 Dec 19.

89. 11 December 2019

    Briefing note dated 10 Dec 2019 added

90. 5 December 2019

    4 December update

91. 27 November 2019

    Thames West area groundwater update: 26 November 2019

92. 19 November 2019

    Latest briefing note 19 Nov 2019

93. 14 November 2019

    New report for 13 November added.

94. 7 June 2018

    Latest report added - 7 June 2018.

95. 24 May 2018

    Latest report added.

96. 17 May 2018

    Latest report added.

97. 10 May 2018

    10 May report added.

98. 3 May 2018

    Updated groundwater briefing note.

99. 27 April 2018

    Latest document added.

100. 19 April 2018

     Added updated groundwater report.

101. 13 April 2018

     April 2018 report added.

102. 13 March 2015

     updated the PDF

103. 19 February 2015

     New report added.

104. 21 January 2015

     New report added.

105. 23 December 2014

     New briefing added.

106. 25 November 2014

     New report for November 2014 added.

107. 2 June 2014

     The latest update on monitored groundwater levels in the West Thames area.

108. 22 May 2014

     New briefing added on 22 May 2014.

109. 16 May 2014

     New briefing added for 16 May 2014.

110. 9 May 2014

     New data added for 9 May 2014.

111. 2 May 2014

     New briefing added for 2 May 2014.

112. 25 April 2014

     The latest briefing note for the West Thames area has been updated today - 25/04/2014

113. 17 April 2014

     New briefing for West Thames added 17 April 2014.

114. 11 April 2014

     New briefing for 11 April 2014.

115. 11 April 2014

     New briefing added for 11 April 2014.

116. 4 April 2014

     New PDF added for 4 April 2014.

117. 28 March 2014

     First published.