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Cartlett Brook water levels

1 gauge, at Cartlett Brook River Station. It is not above its typical high. No storm overflow upstream is discharging now. Gauges in Pembrokeshire; levels are checked every 15 minutes.

1gauge
0above normal
0overflows upstream discharging

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Gauges

Monitoring stations, source to mouth

StationTownLevel nowStatusTrend
Cartlett Brook River Station—0.56 m 32m agoWithin its typical range▽

Stations are listed from source to mouth as the water flows, traced on the river map (OS Open Rivers) and the Environment Agency’s own links between its gauges. A distance “by river” is along the river, and is shown only where the map traces the path.

Contains OS data © Crown copyright and database rights 2026.

Gauged tributaries

Streams and rivers with a gauge whose water joins Cartlett Brook above one of its gauges, from the source down. The river map knows where gauges are, not every stream, so a tributary without a gauge is not listed here.

No gauged tributary joins Cartlett Brook above Cartlett Brook River Station on the river map. Streams without a gauge are not counted here.

Where Cartlett Brook goes

No gauge below Cartlett Brook River Station is known on the river map.

Tributaries and where they join are traced on the river map (OS Open Rivers, edition 2026-04) and the Environment Agency’s links between its gauges. The map holds distances between gauges, not the junctions themselves, so a junction is placed between two gauges, and no further up than the tributary’s own lowest gauge. Contains OS data © Crown copyright and database rights 2026.

Storm overflows upstream

1 storm overflow is traced upstream of Cartlett Brook River Station, Cartlett Brook’s lowest gauge on the river map: on Cartlett Brook itself, on its gauged tributaries, and on smaller streams that join above there.

  • 0 report discharging now
  • 1 not discharging
  • 0 offline or silent: 0 monitor offline, 0 status unknown, 0 no live feed

Official figures for 2025, for the overflow traced upstream of Cartlett Brook River Station: 63 spills over 650 hours.

Each overflow is listed in the stretch above the first gauge its water reaches, from the source down, as on the Gauges tab. A stretch of Cartlett Brook includes the smaller streams that join it there.

Above Cartlett Brook River Station, Cartlett Brook’s highest gauge1 overflow
  • Crundale Storm Overflow Not discharging
    Dwr Cymru Welsh Water · into Cartlett Brook · 2.5 km by river above Cartlett Brook River Station · 2025: 63 spills, 650 h

Near these gauges, connection not known

Within 3 km of one of Cartlett Brook’s gauges in a straight line, but the river map cannot say whether their water reaches it.

  • Quay Street Haverfordwest Storm Overflow Not discharging
    Dwr Cymru Welsh Water · into Tidal Waters Of The Western Cleddau · 660 m from Cartlett Brook River Station in a straight line · discharges to the sea, an estuary or tidal water · 2025: 56 spills, 93 h
  • Picton Place Storm Overflow Not discharging
    Dwr Cymru Welsh Water · into Tidal Waters Of The Western Cleddau · 680 m from Cartlett Brook River Station in a straight line · discharges to the sea, an estuary or tidal water · 2025: 106 spills, 1,564 h
  • Union Hill Storm Overflow Not discharging
    Dwr Cymru Welsh Water · into Western Cleddau · 720 m from Cartlett Brook River Station in a straight line · discharges into a tidal reach, where the water moves both ways · 2025: 84 spills, 126 h
  • Perrots Road Island Storm Overflow Not discharging
    Dwr Cymru Welsh Water · into Western Cleddau · 860 m from Cartlett Brook River Station in a straight line · not connected to this gauge on the river map · 2025: 63 spills, 133 h
  • Merlins Bridge WwTW Storm Overflow Not discharging
    Dwr Cymru Welsh Water · into Cleddau River · 1.1 km from Cartlett Brook River Station in a straight line · its recorded watercourse is not the one mapped beside it · 2025: 72 spills, 512 h
  • Portfield Storm Overflow Not discharging
    Dwr Cymru Welsh Water · into Western Cleddau · 1.4 km from Cartlett Brook River Station in a straight line · its watercourse is not on the river map · 2025: 66 spills, 68 h
  • Kensington Gardens Haverfordwest Storm Overflow Not discharging
    Dwr Cymru Welsh Water · into St Martins Brook · 1.5 km from Cartlett Brook River Station in a straight line · its watercourse is not on the river map · 2025: 4 spills, 1.0 h

A status is the water company’s own monitor: it says whether an overflow is discharging, never how much or why, and a spill does not by itself explain a change in a river level. A status older than two hours is shown as unknown. Annual figures are the official returns: 12/24-hour spills for England and Wales, overflow events for Scotland (Scottish Water counts differently, so the two cannot be compared). “No data” means the monitor produced no usable data that year, not zero. Overflows are placed on OS Open Rivers (edition 2026-04), which leaves out many small channels: an overflow the map cannot place may still drain here. Contains OS data © Crown copyright and database rights 2026. Sewage in Britain’s rivers →

Live status: © Dŵr Cymru Welsh Water, from its Storm Overflow Map. Annual figures for Wales: Dŵr Cymru Welsh Water’s return to Natural Resources Wales, as compiled by The Rivers Trust, Open Government Licence.