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River

Altmühl

227 km from source to mouth · Germany.

GermanyGermanyFlows into Danube

Follow the riverMonth by month

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

In numbers

Length

227km

Average flow

370m³/s

Basin

3,258km²

Drop

88m

from 426 m to 338 m

Country

1

The journey

From source to mouth

227 km of river and 45 stops on the way: 34 towns and cities on its banks, dams, bridges and the tributaries that feed it.

426 m338 m
Burgbernheimat 426 m0 km
Herrieden7,751 people21 km
Altmühlsee3.9 km²51 km
Gunzenhausen16,698 people53 km
Treuchtlingen13,110 people81 km
Pappenheim3,934 people89 km
Hüttenbachtributary118 km
Eichstätt14,066 people123 km
Schwarzachtributary160 km
Sulztributary172 km
Schambachtributary211 km
Danubeat 338 m227 km
050100150200227 km
  1. 0 kmBurgbernheimat 426 m
  2. 0 kmBurghausen (Windelsbach)128 people
  3. 9 kmLeutershausen5,592 people
  4. 21 kmHerrieden7,751 people
  5. 32 kmBrücke
  6. 40 kmAltmühl bridge
  7. 46 kmMuhr am See2,425 people
  8. 51 kmSchlungenhof298 people
  9. 51 kmAltmühlsee3.9 km²
  10. 53 kmAltmühlbrücke Gunzenhausen
  11. 53 kmGunzenhausen16,698 people
  12. 55 kmAha446 people
  13. 59 kmUnterasbach262 people
  14. 61 kmWindsfeld352 people
  15. 64 kmGundelsheim an der Altmühl237 people
  16. 66 kmEhlheim142 people
  17. 68 kmMeinheim840 people
  18. 69 kmTrommetsheim578 people
  19. 70 kmMarkt Berolzheim1,259 people
  20. 73 kmLengenfeld41 people
  21. 76 kmBubenheim290 people
  22. 81 kmTreuchtlingen13,110 people
  23. 84 kmDietfurt in Mittelfranken508 people
  24. 89 kmPappenheim3,934 people
  25. 89 kmNiederpappenheim81 people
  26. 91 kmZimmern179 people
  27. 95 kmSolnhofen1,784 people
  28. 98 kmEßlingen95 people
  29. 100 kmGailachtributary
  30. 118 kmHüttenbachtributary
  31. 122 kmFranz-Göpfert-Steg
  32. 123 kmEichstätt14,066 people
  33. 131 kmAltmühl Bridge Pfünz
  34. 153 kmKipfenberg5,835 people
  35. 160 kmSchwarzachtributary
  36. 172 kmSulztributary
  37. 172 kmBeilngries5,302 people
  38. 174 kmLeising50 people
  39. 176 kmKottingwörth467 people
  40. 184 kmDietfurt6,161 people
  41. 201 kmRiedenburg6,055 people
  42. 211 kmSchambachtributary
  43. 213 kmEssing1,114 people
  44. 221 kmIhrlerstein4,419 people
  45. 222 kmKelheim17,108 people
  46. 227 kmSaal5,626 people
  47. 227 kmDanubeat 338 m

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

River in Bavaria, Germany

At the mouth it carries 372 m³/s on average: an Olympic pool every 6.7 seconds. It drops from 426 m to 338 m, 0.4 m per kilometre on average. Its basin covers 3,258 km², about the size of CV. 3.8 million people live in it. Highest water: from March to May; lowest: from December to February. No large dam holds it back: it is one of the world's free-flowing rivers.

Read more on Wikipedia

Where to start

  • KelheimLargest city on its banks · 17,108 people
  • Munich Airport (MUC)Nearest airport with scheduled flights, 63 km from the cityCar hire at MUC airport (Munich)Discover Cars · Affiliate link
  • On the water59 ferry piers, marinas, boat rentals and boat ramps along the river (OpenStreetMap)
  • Kayak and canoe50 put-ins and rapids mapped (OpenStreetMap)
  • From June to SeptemberThe best months to visit

Altmühl, month by month

Highest water: from March to May

Lowest water: from December to February. Best months to visit: from June to September.

300
-2°50 mmJan
240
0°43 mmFeb
630
4°47 mmMar
630
8°52 mmApr
650
12°75 mmMay
470
16°93 mmJun
490
17°89 mmJul
500
17°84 mmAug
460
14°60 mmSep
430
8°50 mmOct
430
3°52 mmNov
360
0°54 mmDec
Water (estimated flow)Air (average) Rain (mm)Best months

From about 240 m³/s in the lowest month to 650 m³/s in the highest. An estimate: the monthly flow is modelled from the lowest and highest months of WaterGAP (RiverATLAS, 1971–2000) and the rain and snow along the river (WorldClim). Dams change the real rhythm. The chip is the average air temperature; below it, the month's rain.

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.

The basin

Altmühl: the basin in numbers

26,150 km² of land send their water to this river. This is what lives on it.

Free-flowingDams upstream can hold only 1.9% of a year's flow: the river still keeps its natural rhythm.
  • 3.8millionpeople live in the basin
  • 147/km²people per km²
  • 657maverage altitude of the basin
  • 886mmof rain a year (basin average)
  • 7.5°Caverage air temperature
  • 22%protected areas
  • 0.4%covered by lakes
  • 0.2km³held in reservoirs

What covers the basin

  • 38% Forest
  • 30% Cropland
  • 23% Pasture
  • 7% Towns and cities

RiverATLAS (HydroATLAS v1.0, CC BY 4.0): land cover, people, protected areas, glaciers and dams over the whole basin upstream of the mouth.

Along the river

Altmühl: what you find on the way

  • 1Dams
  • 63WeirsWehr Ornbau, Wehr Muhr, Wehr Streudorf and 60 more
  • 17LocksLudwig-Donau-Main-Kanal, Schleuse Dietfurt, Schleuse Riedburg and 14 more
  • 2Waterfalls
  • 5Rapids
  • 45Canoe put-insGunzenhausen, Reitstegwehr, Treuchtlinger Wehr and 42 more
  • 25Boat ramps
  • 18Ferry piersSeezentrum Wald, Seezentrum Muhr am See, Surfzentrum Schlungenhof and 15 more
  • 7MarinasSeezentrum Muhr am See, Seezentrum Wald, Seezentrum Schlungenhof and 4 more
  • 9Boat rentalsBootsverleih Altmühl, Bootsverleih "Zur Zimmerer Mühle", kanuuh and 6 more
  • 7River beachesBadeweiher Colmberg, Altmühlflussbad Ornbau, Flussbad Mörsach and 4 more

From OpenStreetMap, within 2.0 km of the river. Not mapped is not the same as not there.

Cross-checked with our atlases

Altmühl 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.

  • 1lake on its wayLakeyas
  • 103mountains at the sourcePeakyas

Lakes and reservoirs (1)

Lakes it flows through, by Lakeyas

  1. Altmühlseekm 423.9km²

Lakeyas is coming soonOpen Lakeyas ↗

Mountains at the source (103)

Within 15 km of the source, by Peakyas

  1. Büttelberg5.1 km away · prominence 64 m530m
  2. Petersberg5.5 km away504m
  3. Deutscher Bühl9.7 km away527m
  4. Laubersberg14 km away517m
  5. Kühberg13 km away516m
  6. Felberg14 km away · prominence 54 m509m
  7. Eichbuck2.2 km away509m
  8. Sandberg8.2 km away · prominence 81 m534m

95 more on PeakyasOpen Peakyas ↗

From space

The source and the mouth, seen from orbit

Altmühl: satellite view of the source
The source14 km across
Altmühl: satellite view of the mouth
The mouth22 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

Altmühl in pictures

River altmühl - Flickr - Stiller Beobachter
Stiller Beobachter from Ansbach, Germany · CC BY 2.0
Panorama altmuehltal6
Pahu · CC BY-SA 3.0
Altmühlbrücke Jochsberg Nahaufnahme 2019
Mausemarie · CC BY-SA 4.0
Altmühlbrücke Jochsberg Panorama mit Kirche 2019
Mausemarie · CC BY-SA 4.0

Tributaries

Where it flows, and what flows into it

Tributaries (44)

Also: Sulz, Schwarzach, Weiße Laber, Gailach, Mühlbach, Schambach, Wurmbach, Störzelbach, Wachsteiner Bach, Schlangenbach, Wieseth, Hungerbach, Kapellenbach, Möhrenbach, Schambach, Hüttenbach, Rohrach, Weihergraben, Schambach, Augraben, Dornhauser Mühlbach, Holzgraben, Laubenzedeler Mühlbach, Walder Altmühl

Where these numbers come from

Name, length, placesWikidata (Q317060) · 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 atlasesLakeyas, Peakyas — 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