| Dawlish Water | |
| Subdivision Type1: | Country |
| Subdivision Name1: | England |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Devon |
| Length: | 9.3km |
| Width Min: | 0.02m |
| Width Max: | 13.7m |
| Depth Min: | 0m |
| Depth Max: | 0.5m |
| Source1 Location: | Zigzag Wood, Ashcombe |
| Source1 Elevation: | 200m Above Sea Level |
| Mouth Location: | Dawlish |
| Mouth Coordinates: | 50.5801°N -3.465°W |
| Mouth Elevation: | 0m Above Sea Level |
| Basin Size: | 22.5km² |
| Tributaries Left: | Brown’s Brook |
| Tributaries Right: | Mamhead Stream |
Dawlish Water is a minor coastal stream which flows through Devon, England.[1]
Dawlish Water, also known as “The Brook”, rises on the eastern slopes of Haldon Forest in the Haldon Hills by the A380 road and the B3192, (largely heathland and conifer forest), in the Mamhead Obelisk plantation and then flows southeast through Ashcombe, Dawlish Water (Hamlet) and on to Dawlish town, flowing over a series of weirs, then through the centre of the town, under the A379 road and the London-Penzance railway line, by Dawlish railway station, before terminating in the English Channel. The urban part of Dawlish Water is prone to flooding in certain situations, particularly with winds between south and east, when moisture-laden air is forced up the slopes of Haldon Hill, where it then condenses and precipitates. It is a relatively quick-response watercourse, so is susceptible to intense rainstorms, however river levels tend to fall fairly swiftly afterwards.[2]
Dawlish Water has 15 minor tributaries, coming off Luscombe Hill and the hill by the Langdon Plantation. The only major tributary is Brown’s Brook, which is approximately 3km long and comes from Lidwell Chapel, in turn located on Little Haldon.
Water quality is sometimes affected after heavy rainfall due to upstream farm effluent, and combined sewer outfalls in the river as it passes through the town. This in turn can affect the bathing water quality on the beach immediately next to the river, after heavy rain. Several initiatives have improved the situation recently, with the EA liaising with local farmers and water companies to improve water quality.
The water level of the stream has been measured in Dawlish since 2012, normal levels are between and . The maximum recorded level was in November 2012.[3]
The mouth of the river was redesigned in the 2019-onwards works on the Dawlish Sea Wall. It has now been surrounded by a 2m high concrete wall, designed to concentrate the flow of the river at the discharge point to reduce erosion of the surrounding rock and structures, such as the stone groyne, in place to stop Longshore drift at the site.
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