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River

River Tamar

98 km from source to mouth · United Kingdom.

United KingdomUnited KingdomFlows into Hamoaze

Follow the riverMonth by month

SourceMouthPlymouth
The river and every tributary in its basin, drawn from RiverATLAS (CC BY 4.0).

In numbers

Length

98km

Average flow

50m³/s

Basin

1,000km²

Drop

78m

from 78 m to 0 m

Country

1

The journey

From source to mouth

98 km of river and 20 stops on the way: 9 towns and cities on its banks, dams, bridges and the tributaries that feed it.

78 m0 m
Sourceat 78 m0 km
St Giles on the Heath643 people9 km
St Stephens by Launceston Rural360 people12 km
River Kenseytributary18 km
Lezant756 people22 km
Horse Bridge30 km
Gunnislake4,044 people37 km
Bere Alston2,164 people42 km
Hamoazeat 0 m48 km
01020304048 km
  1. 0 kmSourceat 78 m
  2. 6 kmBoyton Bridge
  3. 9 kmSt Giles on the Heath643 people
  4. 11 kmDruxton Bridge
  5. 11 kmWerrington453 people
  6. 12 kmSt Stephens by Launceston Rural360 people
  7. 12 kmHigher New Bridge
  8. 14 kmPolson Bridge
  9. 16 kmLifton1,180 people
  10. 18 kmRiver Kenseytributary
  11. 20 kmBradstone124 people
  12. 20 kmGreystone Bridge
  13. 22 kmLezant756 people
  14. 30 kmHorse Bridge
  15. 37 kmGunnislake4,044 people
  16. 42 kmBere Alston2,164 people
  17. 45 kmRiver Tavytributary
  18. 48 kmRoyal Albert Bridge
  19. 48 kmD-Day landing craft maintenance site, 170m north of Saltash Pier
  20. 48 kmPlymouth267,918 people
  21. 48 kmTamar Bridge
  22. 48 kmHamoazeat 0 m

Water level along the river (RiverATLAS; the height is exaggerated). Towns: GeoNames and Wikidata; bridges, dams and tributaries: Wikidata.

River in Cornwall and Devon, England

At the mouth it carries 50 m³/s on average: an Olympic pool every 50 seconds. It drops from 78 m to 0 m, 0.8 m per kilometre on average. Its basin covers 1,000 km², about the size of HK.

Read more on Wikipedia

Where to start

Plan the trip

Plan the trip: boat trips, a bed by the river, a car

Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.

Along the river

River Tamar: what you find on the way

  • 3WeirsGunnislake Weir
  • 4LocksWeir Head and 3 more
  • 4Boat rampsSlipway and 3 more

From OpenStreetMap, within 1.2 km of the river. Not mapped is not the same as not there.

Cross-checked with our atlases

River Tamar in our other atlases

What our sister atlases know about the waterfalls on this river, the lakes it flows through, the beaches at its mouth, the mountains where it rises and the islands off its mouth.

  • 24beaches at the mouth and on the banksCoastya
  • 1mountain at the sourcePeakyas
  • 3islands off the mouthIslandyas

Beaches (24)

At the mouth (25 km) and on the banks, by Coastya

  1. Talland Bay24 km away · cove16.8°C
  2. Wadham Rocks Beach24 km away16.8°C
  3. Tregantle Beach13 km away16.8°C
  4. Ivy Cove24 km away · cove16.9°C
  5. Long Cove24 km away · cove16.9°C
  6. Sandy Cove24 km away · cove16.9°C
  7. Row Cove24 km away · cove16.9°C
  8. Church Cove24 km away · cove16.9°C

16 more on CoastyaOpen Coastya ↗

Mountains at the source (1)

Within 15 km of the source, by Peakyas

  1. Saint Catherine's Tor10 km away

Open Peakyas ↗

Islands off the mouth (3)

Within 30 km of the mouth, by Islandyas

  1. Drake's Island14 km away0.0km²
  2. Looe Island22 km away
  3. Great Mew Stone20 km away

Islandyas is coming soonOpen Islandyas ↗

From space

The source and the mouth, seen from orbit

River Tamar: satellite view of the source
The source14 km across
River Tamar: satellite view of the mouth
The mouth10 km across

Sentinel-2 cloudless 2016 by EOX IT Services GmbH (contains modified Copernicus Sentinel data 2016), CC BY 4.0. The glowing line is the river as drawn by RiverATLAS.

Photos

River Tamar in pictures

2024 River Tamar Saltash (2)
Chris06 · CC BY-SA 4.0
Calstock Viaduct
Ben Harris · Public domain
2024 River Tamar Saltash (3)
Chris06 · CC BY-SA 4.0
Footbridge over Lower Tamar Lake spillway
Nilfanion · CC BY-SA 4.0

Tributaries

Where it flows, and what flows into it

Tributaries (5)

Also: River Inny, River Ottery, River Tavy, River Lyd, River Kensey

Where these numbers come from

Name, length, placesWikidata (Q578127) · CC0
Course, profile, basinRiverATLAS v1.0 (HydroATLAS, Linke et al. 2019) · CC BY 4.0 — followed from the source to the mouth given by Wikidata
FlowWaterGAP (RiverATLAS), 1971–2000 · CC BY 4.0
Climate along the riverWorldClim (RiverATLAS), 1970–2000 · CC BY 4.0
Towns, bridges, damsWikidata · CC0; GeoNames · CC BY 4.0
Along the river© OpenStreetMap contributors · ODbL
ImagesEOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons
Our other atlasesCoastya, Peakyas, Islandyas — Wikidata · CC0; © OpenStreetMap contributors · ODbL; GeoNames · CC BY 4.0; HydroLAKES · CC BY 4.0; NOAA OISST

Every source and licence is on the data sources page.

The family

Do you prefer beaches, lakes, mountains, waterfalls, islands, rivers or canyons?

Same idea, other landscapes: field atlases built on open data, month by month, in seven languages.

beachesCoastyaFind your beach: sea temperature, sun and swimming month by month.Visit
lakesLakeyasEvery lake on Earth: water temperature, ice, depth and the shore.Coming soonVisit
mountainsPeakyasEvery summit in 3D: summit weather, the 0 °C line, huts and trails.Visit
waterfallsCascadyasEvery waterfall: height, flow month by month and when it roars.Coming soonVisit
islandsIslandyasEvery island from the sea up: size, sea temperature, ferries and 3D.Coming soonVisit
riversRiveryasEvery river from source to sea: the journey, the flow and the basin in numbers.You are here
canyonsCanyonyasEvery canyon cut to scale: depth to the floor, rim and floor temperatures, trails and viewpoints.Coming soonVisit